/* Generated by Cython 0.25.2 */

/* BEGIN: Cython Metadata
{
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END: Cython Metadata */

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#include "numpy/ufuncobject.h"
#include <math.h>
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#define __Pyx_PyBytes_FromStringAndSize PyBytes_FromStringAndSize
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#define __Pyx_PyObject_AsSString(s)    ((signed char*) __Pyx_PyObject_AsString(s))
#define __Pyx_PyObject_AsUString(s)    ((unsigned char*) __Pyx_PyObject_AsString(s))
#define __Pyx_PyObject_FromCString(s)  __Pyx_PyObject_FromString((const char*)s)
#define __Pyx_PyBytes_FromCString(s)   __Pyx_PyBytes_FromString((const char*)s)
#define __Pyx_PyByteArray_FromCString(s)   __Pyx_PyByteArray_FromString((const char*)s)
#define __Pyx_PyStr_FromCString(s)     __Pyx_PyStr_FromString((const char*)s)
#define __Pyx_PyUnicode_FromCString(s) __Pyx_PyUnicode_FromString((const char*)s)
#if PY_MAJOR_VERSION < 3
static CYTHON_INLINE size_t __Pyx_Py_UNICODE_strlen(const Py_UNICODE *u)
{
    const Py_UNICODE *u_end = u;
    while (*u_end++) ;
    return (size_t)(u_end - u - 1);
}
#else
#define __Pyx_Py_UNICODE_strlen Py_UNICODE_strlen
#endif
#define __Pyx_PyUnicode_FromUnicode(u)       PyUnicode_FromUnicode(u, __Pyx_Py_UNICODE_strlen(u))
#define __Pyx_PyUnicode_FromUnicodeAndLength PyUnicode_FromUnicode
#define __Pyx_PyUnicode_AsUnicode            PyUnicode_AsUnicode
#define __Pyx_NewRef(obj) (Py_INCREF(obj), obj)
#define __Pyx_Owned_Py_None(b) __Pyx_NewRef(Py_None)
#define __Pyx_PyBool_FromLong(b) ((b) ? __Pyx_NewRef(Py_True) : __Pyx_NewRef(Py_False))
static CYTHON_INLINE int __Pyx_PyObject_IsTrue(PyObject*);
static CYTHON_INLINE PyObject* __Pyx_PyNumber_IntOrLong(PyObject* x);
static CYTHON_INLINE Py_ssize_t __Pyx_PyIndex_AsSsize_t(PyObject*);
static CYTHON_INLINE PyObject * __Pyx_PyInt_FromSize_t(size_t);
#if CYTHON_ASSUME_SAFE_MACROS
#define __pyx_PyFloat_AsDouble(x) (PyFloat_CheckExact(x) ? PyFloat_AS_DOUBLE(x) : PyFloat_AsDouble(x))
#else
#define __pyx_PyFloat_AsDouble(x) PyFloat_AsDouble(x)
#endif
#define __pyx_PyFloat_AsFloat(x) ((float) __pyx_PyFloat_AsDouble(x))
#if PY_MAJOR_VERSION >= 3
#define __Pyx_PyNumber_Int(x) (PyLong_CheckExact(x) ? __Pyx_NewRef(x) : PyNumber_Long(x))
#else
#define __Pyx_PyNumber_Int(x) (PyInt_CheckExact(x) ? __Pyx_NewRef(x) : PyNumber_Int(x))
#endif
#define __Pyx_PyNumber_Float(x) (PyFloat_CheckExact(x) ? __Pyx_NewRef(x) : PyNumber_Float(x))
#if PY_MAJOR_VERSION < 3 && __PYX_DEFAULT_STRING_ENCODING_IS_ASCII
static int __Pyx_sys_getdefaultencoding_not_ascii;
static int __Pyx_init_sys_getdefaultencoding_params(void) {
    PyObject* sys;
    PyObject* default_encoding = NULL;
    PyObject* ascii_chars_u = NULL;
    PyObject* ascii_chars_b = NULL;
    const char* default_encoding_c;
    sys = PyImport_ImportModule("sys");
    if (!sys) goto bad;
    default_encoding = PyObject_CallMethod(sys, (char*) "getdefaultencoding", NULL);
    Py_DECREF(sys);
    if (!default_encoding) goto bad;
    default_encoding_c = PyBytes_AsString(default_encoding);
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        __Pyx_sys_getdefaultencoding_not_ascii = 0;
    } else {
        char ascii_chars[128];
        int c;
        for (c = 0; c < 128; c++) {
            ascii_chars[c] = c;
        }
        __Pyx_sys_getdefaultencoding_not_ascii = 1;
        ascii_chars_u = PyUnicode_DecodeASCII(ascii_chars, 128, NULL);
        if (!ascii_chars_u) goto bad;
        ascii_chars_b = PyUnicode_AsEncodedString(ascii_chars_u, default_encoding_c, NULL);
        if (!ascii_chars_b || !PyBytes_Check(ascii_chars_b) || memcmp(ascii_chars, PyBytes_AS_STRING(ascii_chars_b), 128) != 0) {
            PyErr_Format(
                PyExc_ValueError,
                "This module compiled with c_string_encoding=ascii, but default encoding '%.200s' is not a superset of ascii.",
                default_encoding_c);
            goto bad;
        }
        Py_DECREF(ascii_chars_u);
        Py_DECREF(ascii_chars_b);
    }
    Py_DECREF(default_encoding);
    return 0;
bad:
    Py_XDECREF(default_encoding);
    Py_XDECREF(ascii_chars_u);
    Py_XDECREF(ascii_chars_b);
    return -1;
}
#endif
#if __PYX_DEFAULT_STRING_ENCODING_IS_DEFAULT && PY_MAJOR_VERSION >= 3
#define __Pyx_PyUnicode_FromStringAndSize(c_str, size) PyUnicode_DecodeUTF8(c_str, size, NULL)
#else
#define __Pyx_PyUnicode_FromStringAndSize(c_str, size) PyUnicode_Decode(c_str, size, __PYX_DEFAULT_STRING_ENCODING, NULL)
#if __PYX_DEFAULT_STRING_ENCODING_IS_DEFAULT
static char* __PYX_DEFAULT_STRING_ENCODING;
static int __Pyx_init_sys_getdefaultencoding_params(void) {
    PyObject* sys;
    PyObject* default_encoding = NULL;
    char* default_encoding_c;
    sys = PyImport_ImportModule("sys");
    if (!sys) goto bad;
    default_encoding = PyObject_CallMethod(sys, (char*) (const char*) "getdefaultencoding", NULL);
    Py_DECREF(sys);
    if (!default_encoding) goto bad;
    default_encoding_c = PyBytes_AsString(default_encoding);
    if (!default_encoding_c) goto bad;
    __PYX_DEFAULT_STRING_ENCODING = (char*) malloc(strlen(default_encoding_c));
    if (!__PYX_DEFAULT_STRING_ENCODING) goto bad;
    strcpy(__PYX_DEFAULT_STRING_ENCODING, default_encoding_c);
    Py_DECREF(default_encoding);
    return 0;
bad:
    Py_XDECREF(default_encoding);
    return -1;
}
#endif
#endif


/* Test for GCC > 2.95 */
#if defined(__GNUC__)     && (__GNUC__ > 2 || (__GNUC__ == 2 && (__GNUC_MINOR__ > 95)))
  #define likely(x)   __builtin_expect(!!(x), 1)
  #define unlikely(x) __builtin_expect(!!(x), 0)
#else /* !__GNUC__ or GCC < 2.95 */
  #define likely(x)   (x)
  #define unlikely(x) (x)
#endif /* __GNUC__ */

static PyObject *__pyx_m;
static PyObject *__pyx_d;
static PyObject *__pyx_b;
static PyObject *__pyx_empty_tuple;
static PyObject *__pyx_empty_bytes;
static PyObject *__pyx_empty_unicode;
static int __pyx_lineno;
static int __pyx_clineno = 0;
static const char * __pyx_cfilenm= __FILE__;
static const char *__pyx_filename;

/* Header.proto */
#if !defined(CYTHON_CCOMPLEX)
  #if defined(__cplusplus)
    #define CYTHON_CCOMPLEX 1
  #elif defined(_Complex_I)
    #define CYTHON_CCOMPLEX 1
  #else
    #define CYTHON_CCOMPLEX 0
  #endif
#endif
#if CYTHON_CCOMPLEX
  #ifdef __cplusplus
    #include <complex>
  #else
    #include <complex.h>
  #endif
#endif
#if CYTHON_CCOMPLEX && !defined(__cplusplus) && defined(__sun__) && defined(__GNUC__)
  #undef _Complex_I
  #define _Complex_I 1.0fj
#endif


static const char *__pyx_f[] = {
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  "__init__.pxd",
  "type.pxd",
  "skgarden/mondrian/tree/_splitter.pxd",
  "skgarden/mondrian/tree/_tree.pxd",
  "skgarden/mondrian/tree/_utils.pxd",
};
/* BufferFormatStructs.proto */
#define IS_UNSIGNED(type) (((type) -1) > 0)
struct __Pyx_StructField_;
#define __PYX_BUF_FLAGS_PACKED_STRUCT (1 << 0)
typedef struct {
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  struct __Pyx_StructField_* fields;
  size_t size;
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  char typegroup;
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typedef struct __Pyx_StructField_ {
  __Pyx_TypeInfo* type;
  const char* name;
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typedef struct {
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typedef struct {
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  __Pyx_BufFmt_StackElem* head;
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} __Pyx_BufFmt_Context;


/* "../../../usr/local/lib/python3.5/dist-packages/Cython/Includes/numpy/__init__.pxd":725
 * # in Cython to enable them only on the right systems.
 * 
 * ctypedef npy_int8       int8_t             # <<<<<<<<<<<<<<
 * ctypedef npy_int16      int16_t
 * ctypedef npy_int32      int32_t
 */
typedef npy_int8 __pyx_t_5numpy_int8_t;

/* "../../../usr/local/lib/python3.5/dist-packages/Cython/Includes/numpy/__init__.pxd":726
 * 
 * ctypedef npy_int8       int8_t
 * ctypedef npy_int16      int16_t             # <<<<<<<<<<<<<<
 * ctypedef npy_int32      int32_t
 * ctypedef npy_int64      int64_t
 */
typedef npy_int16 __pyx_t_5numpy_int16_t;

/* "../../../usr/local/lib/python3.5/dist-packages/Cython/Includes/numpy/__init__.pxd":727
 * ctypedef npy_int8       int8_t
 * ctypedef npy_int16      int16_t
 * ctypedef npy_int32      int32_t             # <<<<<<<<<<<<<<
 * ctypedef npy_int64      int64_t
 * #ctypedef npy_int96      int96_t
 */
typedef npy_int32 __pyx_t_5numpy_int32_t;

/* "../../../usr/local/lib/python3.5/dist-packages/Cython/Includes/numpy/__init__.pxd":728
 * ctypedef npy_int16      int16_t
 * ctypedef npy_int32      int32_t
 * ctypedef npy_int64      int64_t             # <<<<<<<<<<<<<<
 * #ctypedef npy_int96      int96_t
 * #ctypedef npy_int128     int128_t
 */
typedef npy_int64 __pyx_t_5numpy_int64_t;

/* "../../../usr/local/lib/python3.5/dist-packages/Cython/Includes/numpy/__init__.pxd":732
 * #ctypedef npy_int128     int128_t
 * 
 * ctypedef npy_uint8      uint8_t             # <<<<<<<<<<<<<<
 * ctypedef npy_uint16     uint16_t
 * ctypedef npy_uint32     uint32_t
 */
typedef npy_uint8 __pyx_t_5numpy_uint8_t;

/* "../../../usr/local/lib/python3.5/dist-packages/Cython/Includes/numpy/__init__.pxd":733
 * 
 * ctypedef npy_uint8      uint8_t
 * ctypedef npy_uint16     uint16_t             # <<<<<<<<<<<<<<
 * ctypedef npy_uint32     uint32_t
 * ctypedef npy_uint64     uint64_t
 */
typedef npy_uint16 __pyx_t_5numpy_uint16_t;

/* "../../../usr/local/lib/python3.5/dist-packages/Cython/Includes/numpy/__init__.pxd":734
 * ctypedef npy_uint8      uint8_t
 * ctypedef npy_uint16     uint16_t
 * ctypedef npy_uint32     uint32_t             # <<<<<<<<<<<<<<
 * ctypedef npy_uint64     uint64_t
 * #ctypedef npy_uint96     uint96_t
 */
typedef npy_uint32 __pyx_t_5numpy_uint32_t;

/* "../../../usr/local/lib/python3.5/dist-packages/Cython/Includes/numpy/__init__.pxd":735
 * ctypedef npy_uint16     uint16_t
 * ctypedef npy_uint32     uint32_t
 * ctypedef npy_uint64     uint64_t             # <<<<<<<<<<<<<<
 * #ctypedef npy_uint96     uint96_t
 * #ctypedef npy_uint128    uint128_t
 */
typedef npy_uint64 __pyx_t_5numpy_uint64_t;

/* "../../../usr/local/lib/python3.5/dist-packages/Cython/Includes/numpy/__init__.pxd":739
 * #ctypedef npy_uint128    uint128_t
 * 
 * ctypedef npy_float32    float32_t             # <<<<<<<<<<<<<<
 * ctypedef npy_float64    float64_t
 * #ctypedef npy_float80    float80_t
 */
typedef npy_float32 __pyx_t_5numpy_float32_t;

/* "../../../usr/local/lib/python3.5/dist-packages/Cython/Includes/numpy/__init__.pxd":740
 * 
 * ctypedef npy_float32    float32_t
 * ctypedef npy_float64    float64_t             # <<<<<<<<<<<<<<
 * #ctypedef npy_float80    float80_t
 * #ctypedef npy_float128   float128_t
 */
typedef npy_float64 __pyx_t_5numpy_float64_t;

/* "../../../usr/local/lib/python3.5/dist-packages/Cython/Includes/numpy/__init__.pxd":749
 * # The int types are mapped a bit surprising --
 * # numpy.int corresponds to 'l' and numpy.long to 'q'
 * ctypedef npy_long       int_t             # <<<<<<<<<<<<<<
 * ctypedef npy_longlong   long_t
 * ctypedef npy_longlong   longlong_t
 */
typedef npy_long __pyx_t_5numpy_int_t;

/* "../../../usr/local/lib/python3.5/dist-packages/Cython/Includes/numpy/__init__.pxd":750
 * # numpy.int corresponds to 'l' and numpy.long to 'q'
 * ctypedef npy_long       int_t
 * ctypedef npy_longlong   long_t             # <<<<<<<<<<<<<<
 * ctypedef npy_longlong   longlong_t
 * 
 */
typedef npy_longlong __pyx_t_5numpy_long_t;

/* "../../../usr/local/lib/python3.5/dist-packages/Cython/Includes/numpy/__init__.pxd":751
 * ctypedef npy_long       int_t
 * ctypedef npy_longlong   long_t
 * ctypedef npy_longlong   longlong_t             # <<<<<<<<<<<<<<
 * 
 * ctypedef npy_ulong      uint_t
 */
typedef npy_longlong __pyx_t_5numpy_longlong_t;

/* "../../../usr/local/lib/python3.5/dist-packages/Cython/Includes/numpy/__init__.pxd":753
 * ctypedef npy_longlong   longlong_t
 * 
 * ctypedef npy_ulong      uint_t             # <<<<<<<<<<<<<<
 * ctypedef npy_ulonglong  ulong_t
 * ctypedef npy_ulonglong  ulonglong_t
 */
typedef npy_ulong __pyx_t_5numpy_uint_t;

/* "../../../usr/local/lib/python3.5/dist-packages/Cython/Includes/numpy/__init__.pxd":754
 * 
 * ctypedef npy_ulong      uint_t
 * ctypedef npy_ulonglong  ulong_t             # <<<<<<<<<<<<<<
 * ctypedef npy_ulonglong  ulonglong_t
 * 
 */
typedef npy_ulonglong __pyx_t_5numpy_ulong_t;

/* "../../../usr/local/lib/python3.5/dist-packages/Cython/Includes/numpy/__init__.pxd":755
 * ctypedef npy_ulong      uint_t
 * ctypedef npy_ulonglong  ulong_t
 * ctypedef npy_ulonglong  ulonglong_t             # <<<<<<<<<<<<<<
 * 
 * ctypedef npy_intp       intp_t
 */
typedef npy_ulonglong __pyx_t_5numpy_ulonglong_t;

/* "../../../usr/local/lib/python3.5/dist-packages/Cython/Includes/numpy/__init__.pxd":757
 * ctypedef npy_ulonglong  ulonglong_t
 * 
 * ctypedef npy_intp       intp_t             # <<<<<<<<<<<<<<
 * ctypedef npy_uintp      uintp_t
 * 
 */
typedef npy_intp __pyx_t_5numpy_intp_t;

/* "../../../usr/local/lib/python3.5/dist-packages/Cython/Includes/numpy/__init__.pxd":758
 * 
 * ctypedef npy_intp       intp_t
 * ctypedef npy_uintp      uintp_t             # <<<<<<<<<<<<<<
 * 
 * ctypedef npy_double     float_t
 */
typedef npy_uintp __pyx_t_5numpy_uintp_t;

/* "../../../usr/local/lib/python3.5/dist-packages/Cython/Includes/numpy/__init__.pxd":760
 * ctypedef npy_uintp      uintp_t
 * 
 * ctypedef npy_double     float_t             # <<<<<<<<<<<<<<
 * ctypedef npy_double     double_t
 * ctypedef npy_longdouble longdouble_t
 */
typedef npy_double __pyx_t_5numpy_float_t;

/* "../../../usr/local/lib/python3.5/dist-packages/Cython/Includes/numpy/__init__.pxd":761
 * 
 * ctypedef npy_double     float_t
 * ctypedef npy_double     double_t             # <<<<<<<<<<<<<<
 * ctypedef npy_longdouble longdouble_t
 * 
 */
typedef npy_double __pyx_t_5numpy_double_t;

/* "../../../usr/local/lib/python3.5/dist-packages/Cython/Includes/numpy/__init__.pxd":762
 * ctypedef npy_double     float_t
 * ctypedef npy_double     double_t
 * ctypedef npy_longdouble longdouble_t             # <<<<<<<<<<<<<<
 * 
 * ctypedef npy_cfloat      cfloat_t
 */
typedef npy_longdouble __pyx_t_5numpy_longdouble_t;

/* "_splitter.pxd":17
 * from ._criterion cimport Criterion
 * 
 * ctypedef np.npy_float32 DTYPE_t          # Type of X             # <<<<<<<<<<<<<<
 * ctypedef np.npy_float64 DOUBLE_t         # Type of y, sample_weight
 * ctypedef np.npy_intp SIZE_t              # Type for indices and counters
 */
typedef npy_float32 __pyx_t_8skgarden_8mondrian_4tree_9_splitter_DTYPE_t;

/* "_splitter.pxd":18
 * 
 * ctypedef np.npy_float32 DTYPE_t          # Type of X
 * ctypedef np.npy_float64 DOUBLE_t         # Type of y, sample_weight             # <<<<<<<<<<<<<<
 * ctypedef np.npy_intp SIZE_t              # Type for indices and counters
 * ctypedef np.npy_int32 INT32_t            # Signed 32 bit integer
 */
typedef npy_float64 __pyx_t_8skgarden_8mondrian_4tree_9_splitter_DOUBLE_t;

/* "_splitter.pxd":19
 * ctypedef np.npy_float32 DTYPE_t          # Type of X
 * ctypedef np.npy_float64 DOUBLE_t         # Type of y, sample_weight
 * ctypedef np.npy_intp SIZE_t              # Type for indices and counters             # <<<<<<<<<<<<<<
 * ctypedef np.npy_int32 INT32_t            # Signed 32 bit integer
 * ctypedef np.npy_uint32 UINT32_t          # Unsigned 32 bit integer
 */
typedef npy_intp __pyx_t_8skgarden_8mondrian_4tree_9_splitter_SIZE_t;

/* "_splitter.pxd":20
 * ctypedef np.npy_float64 DOUBLE_t         # Type of y, sample_weight
 * ctypedef np.npy_intp SIZE_t              # Type for indices and counters
 * ctypedef np.npy_int32 INT32_t            # Signed 32 bit integer             # <<<<<<<<<<<<<<
 * ctypedef np.npy_uint32 UINT32_t          # Unsigned 32 bit integer
 * 
 */
typedef npy_int32 __pyx_t_8skgarden_8mondrian_4tree_9_splitter_INT32_t;

/* "_splitter.pxd":21
 * ctypedef np.npy_intp SIZE_t              # Type for indices and counters
 * ctypedef np.npy_int32 INT32_t            # Signed 32 bit integer
 * ctypedef np.npy_uint32 UINT32_t          # Unsigned 32 bit integer             # <<<<<<<<<<<<<<
 * 
 * cdef struct SplitRecord:
 */
typedef npy_uint32 __pyx_t_8skgarden_8mondrian_4tree_9_splitter_UINT32_t;

/* "_tree.pxd":16
 * cimport numpy as np
 * 
 * ctypedef np.npy_float32 DTYPE_t          # Type of X             # <<<<<<<<<<<<<<
 * ctypedef np.npy_float64 DOUBLE_t         # Type of y, sample_weight
 * ctypedef np.npy_intp SIZE_t              # Type for indices and counters
 */
typedef npy_float32 __pyx_t_8skgarden_8mondrian_4tree_5_tree_DTYPE_t;

/* "_tree.pxd":17
 * 
 * ctypedef np.npy_float32 DTYPE_t          # Type of X
 * ctypedef np.npy_float64 DOUBLE_t         # Type of y, sample_weight             # <<<<<<<<<<<<<<
 * ctypedef np.npy_intp SIZE_t              # Type for indices and counters
 * ctypedef np.npy_int32 INT32_t            # Signed 32 bit integer
 */
typedef npy_float64 __pyx_t_8skgarden_8mondrian_4tree_5_tree_DOUBLE_t;

/* "_tree.pxd":18
 * ctypedef np.npy_float32 DTYPE_t          # Type of X
 * ctypedef np.npy_float64 DOUBLE_t         # Type of y, sample_weight
 * ctypedef np.npy_intp SIZE_t              # Type for indices and counters             # <<<<<<<<<<<<<<
 * ctypedef np.npy_int32 INT32_t            # Signed 32 bit integer
 * ctypedef np.npy_uint32 UINT32_t          # Unsigned 32 bit integer
 */
typedef npy_intp __pyx_t_8skgarden_8mondrian_4tree_5_tree_SIZE_t;

/* "_tree.pxd":19
 * ctypedef np.npy_float64 DOUBLE_t         # Type of y, sample_weight
 * ctypedef np.npy_intp SIZE_t              # Type for indices and counters
 * ctypedef np.npy_int32 INT32_t            # Signed 32 bit integer             # <<<<<<<<<<<<<<
 * ctypedef np.npy_uint32 UINT32_t          # Unsigned 32 bit integer
 * 
 */
typedef npy_int32 __pyx_t_8skgarden_8mondrian_4tree_5_tree_INT32_t;

/* "_tree.pxd":20
 * ctypedef np.npy_intp SIZE_t              # Type for indices and counters
 * ctypedef np.npy_int32 INT32_t            # Signed 32 bit integer
 * ctypedef np.npy_uint32 UINT32_t          # Unsigned 32 bit integer             # <<<<<<<<<<<<<<
 * 
 * from ._splitter cimport Splitter
 */
typedef npy_uint32 __pyx_t_8skgarden_8mondrian_4tree_5_tree_UINT32_t;

/* "_utils.pxd":15
 * from _tree cimport Node
 * 
 * ctypedef np.npy_float32 DTYPE_t          # Type of X             # <<<<<<<<<<<<<<
 * ctypedef np.npy_float64 DOUBLE_t         # Type of y, sample_weight
 * ctypedef np.npy_intp SIZE_t              # Type for indices and counters
 */
typedef npy_float32 __pyx_t_8skgarden_8mondrian_4tree_6_utils_DTYPE_t;

/* "_utils.pxd":16
 * 
 * ctypedef np.npy_float32 DTYPE_t          # Type of X
 * ctypedef np.npy_float64 DOUBLE_t         # Type of y, sample_weight             # <<<<<<<<<<<<<<
 * ctypedef np.npy_intp SIZE_t              # Type for indices and counters
 * ctypedef np.npy_int32 INT32_t            # Signed 32 bit integer
 */
typedef npy_float64 __pyx_t_8skgarden_8mondrian_4tree_6_utils_DOUBLE_t;

/* "_utils.pxd":17
 * ctypedef np.npy_float32 DTYPE_t          # Type of X
 * ctypedef np.npy_float64 DOUBLE_t         # Type of y, sample_weight
 * ctypedef np.npy_intp SIZE_t              # Type for indices and counters             # <<<<<<<<<<<<<<
 * ctypedef np.npy_int32 INT32_t            # Signed 32 bit integer
 * ctypedef np.npy_uint32 UINT32_t          # Unsigned 32 bit integer
 */
typedef npy_intp __pyx_t_8skgarden_8mondrian_4tree_6_utils_SIZE_t;

/* "_utils.pxd":18
 * ctypedef np.npy_float64 DOUBLE_t         # Type of y, sample_weight
 * ctypedef np.npy_intp SIZE_t              # Type for indices and counters
 * ctypedef np.npy_int32 INT32_t            # Signed 32 bit integer             # <<<<<<<<<<<<<<
 * ctypedef np.npy_uint32 UINT32_t          # Unsigned 32 bit integer
 * 
 */
typedef npy_int32 __pyx_t_8skgarden_8mondrian_4tree_6_utils_INT32_t;

/* "_utils.pxd":19
 * ctypedef np.npy_intp SIZE_t              # Type for indices and counters
 * ctypedef np.npy_int32 INT32_t            # Signed 32 bit integer
 * ctypedef np.npy_uint32 UINT32_t          # Unsigned 32 bit integer             # <<<<<<<<<<<<<<
 * 
 * cdef enum:
 */
typedef npy_uint32 __pyx_t_8skgarden_8mondrian_4tree_6_utils_UINT32_t;

/* "skgarden/mondrian/tree/_criterion.pxd":15
 * cimport numpy as np
 * 
 * ctypedef np.npy_float32 DTYPE_t          # Type of X             # <<<<<<<<<<<<<<
 * ctypedef np.npy_float64 DOUBLE_t         # Type of y, sample_weight
 * ctypedef np.npy_intp SIZE_t              # Type for indices and counters
 */
typedef npy_float32 __pyx_t_8skgarden_8mondrian_4tree_10_criterion_DTYPE_t;

/* "skgarden/mondrian/tree/_criterion.pxd":16
 * 
 * ctypedef np.npy_float32 DTYPE_t          # Type of X
 * ctypedef np.npy_float64 DOUBLE_t         # Type of y, sample_weight             # <<<<<<<<<<<<<<
 * ctypedef np.npy_intp SIZE_t              # Type for indices and counters
 * ctypedef np.npy_int32 INT32_t            # Signed 32 bit integer
 */
typedef npy_float64 __pyx_t_8skgarden_8mondrian_4tree_10_criterion_DOUBLE_t;

/* "skgarden/mondrian/tree/_criterion.pxd":17
 * ctypedef np.npy_float32 DTYPE_t          # Type of X
 * ctypedef np.npy_float64 DOUBLE_t         # Type of y, sample_weight
 * ctypedef np.npy_intp SIZE_t              # Type for indices and counters             # <<<<<<<<<<<<<<
 * ctypedef np.npy_int32 INT32_t            # Signed 32 bit integer
 * ctypedef np.npy_uint32 UINT32_t          # Unsigned 32 bit integer
 */
typedef npy_intp __pyx_t_8skgarden_8mondrian_4tree_10_criterion_SIZE_t;

/* "skgarden/mondrian/tree/_criterion.pxd":18
 * ctypedef np.npy_float64 DOUBLE_t         # Type of y, sample_weight
 * ctypedef np.npy_intp SIZE_t              # Type for indices and counters
 * ctypedef np.npy_int32 INT32_t            # Signed 32 bit integer             # <<<<<<<<<<<<<<
 * ctypedef np.npy_uint32 UINT32_t          # Unsigned 32 bit integer
 * 
 */
typedef npy_int32 __pyx_t_8skgarden_8mondrian_4tree_10_criterion_INT32_t;

/* "skgarden/mondrian/tree/_criterion.pxd":19
 * ctypedef np.npy_intp SIZE_t              # Type for indices and counters
 * ctypedef np.npy_int32 INT32_t            # Signed 32 bit integer
 * ctypedef np.npy_uint32 UINT32_t          # Unsigned 32 bit integer             # <<<<<<<<<<<<<<
 * 
 * cdef class Criterion:
 */
typedef npy_uint32 __pyx_t_8skgarden_8mondrian_4tree_10_criterion_UINT32_t;
/* Declarations.proto */
#if CYTHON_CCOMPLEX
  #ifdef __cplusplus
    typedef ::std::complex< float > __pyx_t_float_complex;
  #else
    typedef float _Complex __pyx_t_float_complex;
  #endif
#else
    typedef struct { float real, imag; } __pyx_t_float_complex;
#endif
static CYTHON_INLINE __pyx_t_float_complex __pyx_t_float_complex_from_parts(float, float);

/* Declarations.proto */
#if CYTHON_CCOMPLEX
  #ifdef __cplusplus
    typedef ::std::complex< double > __pyx_t_double_complex;
  #else
    typedef double _Complex __pyx_t_double_complex;
  #endif
#else
    typedef struct { double real, imag; } __pyx_t_double_complex;
#endif
static CYTHON_INLINE __pyx_t_double_complex __pyx_t_double_complex_from_parts(double, double);


/*--- Type declarations ---*/
struct __pyx_obj_8skgarden_8mondrian_4tree_9_splitter_Splitter;
struct __pyx_obj_8skgarden_8mondrian_4tree_5_tree_Tree;
struct __pyx_obj_8skgarden_8mondrian_4tree_5_tree_TreeBuilder;
struct __pyx_obj_8skgarden_8mondrian_4tree_6_utils_Stack;
struct __pyx_obj_8skgarden_8mondrian_4tree_10_criterion_Criterion;
struct __pyx_obj_8skgarden_8mondrian_4tree_10_criterion_RegressionCriterion;
struct __pyx_obj_8skgarden_8mondrian_4tree_10_criterion_MSE;
struct __pyx_obj_8skgarden_8mondrian_4tree_10_criterion_ClassificationCriterion;

/* "../../../usr/local/lib/python3.5/dist-packages/Cython/Includes/numpy/__init__.pxd":764
 * ctypedef npy_longdouble longdouble_t
 * 
 * ctypedef npy_cfloat      cfloat_t             # <<<<<<<<<<<<<<
 * ctypedef npy_cdouble     cdouble_t
 * ctypedef npy_clongdouble clongdouble_t
 */
typedef npy_cfloat __pyx_t_5numpy_cfloat_t;

/* "../../../usr/local/lib/python3.5/dist-packages/Cython/Includes/numpy/__init__.pxd":765
 * 
 * ctypedef npy_cfloat      cfloat_t
 * ctypedef npy_cdouble     cdouble_t             # <<<<<<<<<<<<<<
 * ctypedef npy_clongdouble clongdouble_t
 * 
 */
typedef npy_cdouble __pyx_t_5numpy_cdouble_t;

/* "../../../usr/local/lib/python3.5/dist-packages/Cython/Includes/numpy/__init__.pxd":766
 * ctypedef npy_cfloat      cfloat_t
 * ctypedef npy_cdouble     cdouble_t
 * ctypedef npy_clongdouble clongdouble_t             # <<<<<<<<<<<<<<
 * 
 * ctypedef npy_cdouble     complex_t
 */
typedef npy_clongdouble __pyx_t_5numpy_clongdouble_t;

/* "../../../usr/local/lib/python3.5/dist-packages/Cython/Includes/numpy/__init__.pxd":768
 * ctypedef npy_clongdouble clongdouble_t
 * 
 * ctypedef npy_cdouble     complex_t             # <<<<<<<<<<<<<<
 * 
 * cdef inline object PyArray_MultiIterNew1(a):
 */
typedef npy_cdouble __pyx_t_5numpy_complex_t;
struct __pyx_t_8skgarden_8mondrian_4tree_9_splitter_SplitRecord;
struct __pyx_opt_args_8skgarden_8mondrian_4tree_9_splitter_8Splitter_init;

/* "_splitter.pxd":23
 * ctypedef np.npy_uint32 UINT32_t          # Unsigned 32 bit integer
 * 
 * cdef struct SplitRecord:             # <<<<<<<<<<<<<<
 *     # Data to track sample split
 *     SIZE_t feature         # Which feature to split on.
 */
struct __pyx_t_8skgarden_8mondrian_4tree_9_splitter_SplitRecord {
  __pyx_t_8skgarden_8mondrian_4tree_9_splitter_SIZE_t feature;
  __pyx_t_8skgarden_8mondrian_4tree_9_splitter_SIZE_t pos;
  double threshold;
  double improvement;
  double impurity_left;
  double impurity_right;
  double E;
};

/* "_splitter.pxd":86
 * 
 *     # Methods
 *     cdef int init(self, object X, np.ndarray y,             # <<<<<<<<<<<<<<
 *                   DOUBLE_t* sample_weight,
 *                   np.ndarray X_idx_sorted=*) except -1
 */
struct __pyx_opt_args_8skgarden_8mondrian_4tree_9_splitter_8Splitter_init {
  int __pyx_n;
  PyArrayObject *X_idx_sorted;
};
struct __pyx_t_8skgarden_8mondrian_4tree_5_tree_Node;
struct __pyx_opt_args_8skgarden_8mondrian_4tree_5_tree_4Tree__resize_c;
struct __pyx_opt_args_8skgarden_8mondrian_4tree_5_tree_4Tree_predict;
struct __pyx_opt_args_8skgarden_8mondrian_4tree_5_tree_11TreeBuilder_build;

/* "_tree.pxd":25
 * from ._splitter cimport SplitRecord
 * 
 * cdef struct Node:             # <<<<<<<<<<<<<<
 *     # Base storage structure for the nodes in a Tree object
 * 
 */
struct __pyx_t_8skgarden_8mondrian_4tree_5_tree_Node {
  __pyx_t_8skgarden_8mondrian_4tree_5_tree_SIZE_t left_child;
  __pyx_t_8skgarden_8mondrian_4tree_5_tree_SIZE_t right_child;
  __pyx_t_8skgarden_8mondrian_4tree_5_tree_SIZE_t feature;
  __pyx_t_8skgarden_8mondrian_4tree_5_tree_DOUBLE_t threshold;
  __pyx_t_8skgarden_8mondrian_4tree_5_tree_DOUBLE_t impurity;
  __pyx_t_8skgarden_8mondrian_4tree_5_tree_SIZE_t n_node_samples;
  __pyx_t_8skgarden_8mondrian_4tree_5_tree_DOUBLE_t weighted_n_node_samples;
  __pyx_t_8skgarden_8mondrian_4tree_5_tree_DTYPE_t *lower_bounds;
  __pyx_t_8skgarden_8mondrian_4tree_5_tree_DTYPE_t *upper_bounds;
  __pyx_t_8skgarden_8mondrian_4tree_5_tree_DTYPE_t tau;
  __pyx_t_8skgarden_8mondrian_4tree_5_tree_DOUBLE_t variance;
};

/* "_tree.pxd":70
 *                           double E) nogil except -1
 *     cdef int _resize(self, SIZE_t capacity) nogil except -1
 *     cdef int _resize_c(self, SIZE_t capacity=*) nogil except -1             # <<<<<<<<<<<<<<
 * 
 *     cdef np.ndarray _get_value_ndarray(self)
 */
struct __pyx_opt_args_8skgarden_8mondrian_4tree_5_tree_4Tree__resize_c {
  int __pyx_n;
  __pyx_t_8skgarden_8mondrian_4tree_5_tree_SIZE_t capacity;
};

/* "_tree.pxd":75
 *     cdef np.ndarray _get_node_ndarray(self)
 * 
 *     cpdef tuple predict(self, object X, bint return_std=*, bint is_regression=*)             # <<<<<<<<<<<<<<
 * 
 *     cpdef np.ndarray apply(self, object X)
 */
struct __pyx_opt_args_8skgarden_8mondrian_4tree_5_tree_4Tree_predict {
  int __pyx_n;
  int return_std;
  int is_regression;
};

/* "_tree.pxd":106
 *     cdef SIZE_t max_depth           # Maximal tree depth
 * 
 *     cpdef build(self, Tree tree, object X, np.ndarray y,             # <<<<<<<<<<<<<<
 *                 np.ndarray sample_weight=*,
 *                 np.ndarray X_idx_sorted=*)
 */
struct __pyx_opt_args_8skgarden_8mondrian_4tree_5_tree_11TreeBuilder_build {
  int __pyx_n;
  PyArrayObject *sample_weight;
  PyArrayObject *X_idx_sorted;
};
struct __pyx_t_8skgarden_8mondrian_4tree_6_utils_StackRecord;

/* "_utils.pxd":21
 * ctypedef np.npy_uint32 UINT32_t          # Unsigned 32 bit integer
 * 
 * cdef enum:             # <<<<<<<<<<<<<<
 *     # Max value for our rand_r replacement (near the bottom).
 *     # We don't use RAND_MAX because it's different across platforms and
 */
enum  {
  __pyx_e_8skgarden_8mondrian_4tree_6_utils_RAND_R_MAX = 0x7FFFFFFF
};

/* "_utils.pxd":65
 * 
 * # A record on the stack for depth-first tree growing
 * cdef struct StackRecord:             # <<<<<<<<<<<<<<
 *     SIZE_t start
 *     SIZE_t end
 */
struct __pyx_t_8skgarden_8mondrian_4tree_6_utils_StackRecord {
  __pyx_t_8skgarden_8mondrian_4tree_6_utils_SIZE_t start;
  __pyx_t_8skgarden_8mondrian_4tree_6_utils_SIZE_t end;
  __pyx_t_8skgarden_8mondrian_4tree_6_utils_SIZE_t depth;
  __pyx_t_8skgarden_8mondrian_4tree_6_utils_SIZE_t parent;
  int is_left;
  double impurity;
  __pyx_t_8skgarden_8mondrian_4tree_6_utils_SIZE_t n_constant_features;
};

/* "_splitter.pxd":35
 *     double E               # Time of split.
 * 
 * cdef class Splitter:             # <<<<<<<<<<<<<<
 *     # The splitter searches in the input space for a feature and a threshold
 *     # to split the samples samples[start:end].
 */
struct __pyx_obj_8skgarden_8mondrian_4tree_9_splitter_Splitter {
  PyObject_HEAD
  struct __pyx_vtabstruct_8skgarden_8mondrian_4tree_9_splitter_Splitter *__pyx_vtab;
  struct __pyx_obj_8skgarden_8mondrian_4tree_10_criterion_Criterion *criterion;
  __pyx_t_8skgarden_8mondrian_4tree_9_splitter_SIZE_t max_features;
  PyObject *random_state;
  __pyx_t_8skgarden_8mondrian_4tree_9_splitter_UINT32_t rand_r_state;
  __pyx_t_8skgarden_8mondrian_4tree_9_splitter_SIZE_t *samples;
  __pyx_t_8skgarden_8mondrian_4tree_9_splitter_SIZE_t n_samples;
  double weighted_n_samples;
  __pyx_t_8skgarden_8mondrian_4tree_9_splitter_SIZE_t *features;
  __pyx_t_8skgarden_8mondrian_4tree_9_splitter_SIZE_t *constant_features;
  __pyx_t_8skgarden_8mondrian_4tree_9_splitter_SIZE_t n_features;
  __pyx_t_8skgarden_8mondrian_4tree_9_splitter_DTYPE_t *feature_values;
  __pyx_t_8skgarden_8mondrian_4tree_9_splitter_SIZE_t start;
  __pyx_t_8skgarden_8mondrian_4tree_9_splitter_SIZE_t end;
  int presort;
  __pyx_t_8skgarden_8mondrian_4tree_9_splitter_DOUBLE_t *y;
  __pyx_t_8skgarden_8mondrian_4tree_9_splitter_SIZE_t y_stride;
  __pyx_t_8skgarden_8mondrian_4tree_9_splitter_DOUBLE_t *sample_weight;
  __pyx_t_8skgarden_8mondrian_4tree_9_splitter_DTYPE_t *upper_bounds;
  __pyx_t_8skgarden_8mondrian_4tree_9_splitter_DTYPE_t *lower_bounds;
};


/* "_tree.pxd":41
 * 
 * 
 * cdef class Tree:             # <<<<<<<<<<<<<<
 *     # The Tree object is a binary tree structure constructed by the
 *     # TreeBuilder. The tree structure is used for predictions and
 */
struct __pyx_obj_8skgarden_8mondrian_4tree_5_tree_Tree {
  PyObject_HEAD
  struct __pyx_vtabstruct_8skgarden_8mondrian_4tree_5_tree_Tree *__pyx_vtab;
  __pyx_t_8skgarden_8mondrian_4tree_5_tree_SIZE_t n_features;
  __pyx_t_8skgarden_8mondrian_4tree_5_tree_SIZE_t *n_classes;
  __pyx_t_8skgarden_8mondrian_4tree_5_tree_SIZE_t n_outputs;
  __pyx_t_8skgarden_8mondrian_4tree_5_tree_SIZE_t max_n_classes;
  __pyx_t_8skgarden_8mondrian_4tree_5_tree_SIZE_t max_depth;
  __pyx_t_8skgarden_8mondrian_4tree_5_tree_SIZE_t node_count;
  __pyx_t_8skgarden_8mondrian_4tree_5_tree_SIZE_t capacity;
  struct __pyx_t_8skgarden_8mondrian_4tree_5_tree_Node *nodes;
  double *value;
  __pyx_t_8skgarden_8mondrian_4tree_5_tree_SIZE_t value_stride;
};


/* "_tree.pxd":91
 * # =============================================================================
 * 
 * cdef class TreeBuilder:             # <<<<<<<<<<<<<<
 *     # The TreeBuilder recursively builds a Tree object from training samples,
 *     # using a Splitter object for splitting internal nodes and assigning
 */
struct __pyx_obj_8skgarden_8mondrian_4tree_5_tree_TreeBuilder {
  PyObject_HEAD
  struct __pyx_vtabstruct_8skgarden_8mondrian_4tree_5_tree_TreeBuilder *__pyx_vtab;
  struct __pyx_obj_8skgarden_8mondrian_4tree_9_splitter_Splitter *splitter;
  __pyx_t_8skgarden_8mondrian_4tree_5_tree_SIZE_t min_samples_split;
  __pyx_t_8skgarden_8mondrian_4tree_5_tree_SIZE_t min_samples_leaf;
  double min_weight_leaf;
  __pyx_t_8skgarden_8mondrian_4tree_5_tree_SIZE_t max_depth;
};


/* "_utils.pxd":74
 *     SIZE_t n_constant_features
 * 
 * cdef class Stack:             # <<<<<<<<<<<<<<
 *     cdef SIZE_t capacity
 *     cdef SIZE_t top
 */
struct __pyx_obj_8skgarden_8mondrian_4tree_6_utils_Stack {
  PyObject_HEAD
  struct __pyx_vtabstruct_8skgarden_8mondrian_4tree_6_utils_Stack *__pyx_vtab;
  __pyx_t_8skgarden_8mondrian_4tree_6_utils_SIZE_t capacity;
  __pyx_t_8skgarden_8mondrian_4tree_6_utils_SIZE_t top;
  struct __pyx_t_8skgarden_8mondrian_4tree_6_utils_StackRecord *stack_;
};


/* "skgarden/mondrian/tree/_criterion.pxd":21
 * ctypedef np.npy_uint32 UINT32_t          # Unsigned 32 bit integer
 * 
 * cdef class Criterion:             # <<<<<<<<<<<<<<
 *     # The criterion computes the impurity of a node and the reduction of
 *     # impurity of a split on that node. It also computes the output statistics
 */
struct __pyx_obj_8skgarden_8mondrian_4tree_10_criterion_Criterion {
  PyObject_HEAD
  struct __pyx_vtabstruct_8skgarden_8mondrian_4tree_10_criterion_Criterion *__pyx_vtab;
  __pyx_t_8skgarden_8mondrian_4tree_10_criterion_DOUBLE_t *y;
  __pyx_t_8skgarden_8mondrian_4tree_10_criterion_SIZE_t y_stride;
  __pyx_t_8skgarden_8mondrian_4tree_10_criterion_DOUBLE_t *sample_weight;
  __pyx_t_8skgarden_8mondrian_4tree_10_criterion_SIZE_t *samples;
  __pyx_t_8skgarden_8mondrian_4tree_10_criterion_SIZE_t start;
  __pyx_t_8skgarden_8mondrian_4tree_10_criterion_SIZE_t pos;
  __pyx_t_8skgarden_8mondrian_4tree_10_criterion_SIZE_t end;
  __pyx_t_8skgarden_8mondrian_4tree_10_criterion_SIZE_t n_outputs;
  __pyx_t_8skgarden_8mondrian_4tree_10_criterion_SIZE_t n_samples;
  __pyx_t_8skgarden_8mondrian_4tree_10_criterion_SIZE_t n_node_samples;
  double weighted_n_samples;
  double weighted_n_node_samples;
  double weighted_n_left;
  double weighted_n_right;
  double *sum_total;
  double *sum_left;
  double *sum_right;
};


/* "skgarden/mondrian/tree/_criterion.pyx":212
 * 
 * 
 * cdef class RegressionCriterion(Criterion):             # <<<<<<<<<<<<<<
 *     """Abstract regression criterion.
 * 
 */
struct __pyx_obj_8skgarden_8mondrian_4tree_10_criterion_RegressionCriterion {
  struct __pyx_obj_8skgarden_8mondrian_4tree_10_criterion_Criterion __pyx_base;
  double sq_sum_total;
};


/* "skgarden/mondrian/tree/_criterion.pyx":420
 * 
 * 
 * cdef class MSE(RegressionCriterion):             # <<<<<<<<<<<<<<
 *     """Mean squared error impurity criterion.
 * 
 */
struct __pyx_obj_8skgarden_8mondrian_4tree_10_criterion_MSE {
  struct __pyx_obj_8skgarden_8mondrian_4tree_10_criterion_RegressionCriterion __pyx_base;
};


/* "skgarden/mondrian/tree/_criterion.pyx":514
 * 
 * 
 * cdef class ClassificationCriterion(Criterion):             # <<<<<<<<<<<<<<
 *     """Abstract criterion for classification."""
 * 
 */
struct __pyx_obj_8skgarden_8mondrian_4tree_10_criterion_ClassificationCriterion {
  struct __pyx_obj_8skgarden_8mondrian_4tree_10_criterion_Criterion __pyx_base;
  __pyx_t_8skgarden_8mondrian_4tree_10_criterion_SIZE_t *n_classes;
  __pyx_t_8skgarden_8mondrian_4tree_10_criterion_SIZE_t sum_stride;
};



/* "_splitter.pxd":35
 *     double E               # Time of split.
 * 
 * cdef class Splitter:             # <<<<<<<<<<<<<<
 *     # The splitter searches in the input space for a feature and a threshold
 *     # to split the samples samples[start:end].
 */

struct __pyx_vtabstruct_8skgarden_8mondrian_4tree_9_splitter_Splitter {
  int (*init)(struct __pyx_obj_8skgarden_8mondrian_4tree_9_splitter_Splitter *, PyObject *, PyArrayObject *, __pyx_t_8skgarden_8mondrian_4tree_9_splitter_DOUBLE_t *, struct __pyx_opt_args_8skgarden_8mondrian_4tree_9_splitter_8Splitter_init *__pyx_optional_args);
  int (*node_reset)(struct __pyx_obj_8skgarden_8mondrian_4tree_9_splitter_Splitter *, __pyx_t_8skgarden_8mondrian_4tree_9_splitter_SIZE_t, __pyx_t_8skgarden_8mondrian_4tree_9_splitter_SIZE_t, double *);
  int (*node_split)(struct __pyx_obj_8skgarden_8mondrian_4tree_9_splitter_Splitter *, double, struct __pyx_t_8skgarden_8mondrian_4tree_9_splitter_SplitRecord *, __pyx_t_8skgarden_8mondrian_4tree_9_splitter_SIZE_t *);
  void (*node_value)(struct __pyx_obj_8skgarden_8mondrian_4tree_9_splitter_Splitter *, double *);
  double (*node_impurity)(struct __pyx_obj_8skgarden_8mondrian_4tree_9_splitter_Splitter *);
  void (*set_bounds)(struct __pyx_obj_8skgarden_8mondrian_4tree_9_splitter_Splitter *);
};
static struct __pyx_vtabstruct_8skgarden_8mondrian_4tree_9_splitter_Splitter *__pyx_vtabptr_8skgarden_8mondrian_4tree_9_splitter_Splitter;


/* "_tree.pxd":41
 * 
 * 
 * cdef class Tree:             # <<<<<<<<<<<<<<
 *     # The Tree object is a binary tree structure constructed by the
 *     # TreeBuilder. The tree structure is used for predictions and
 */

struct __pyx_vtabstruct_8skgarden_8mondrian_4tree_5_tree_Tree {
  __pyx_t_8skgarden_8mondrian_4tree_5_tree_SIZE_t (*_add_node)(struct __pyx_obj_8skgarden_8mondrian_4tree_5_tree_Tree *, __pyx_t_8skgarden_8mondrian_4tree_5_tree_SIZE_t, int, int, __pyx_t_8skgarden_8mondrian_4tree_5_tree_SIZE_t, double, double, __pyx_t_8skgarden_8mondrian_4tree_5_tree_SIZE_t, double, __pyx_t_8skgarden_8mondrian_4tree_5_tree_DTYPE_t *, __pyx_t_8skgarden_8mondrian_4tree_5_tree_DTYPE_t *, double);
  int (*_resize)(struct __pyx_obj_8skgarden_8mondrian_4tree_5_tree_Tree *, __pyx_t_8skgarden_8mondrian_4tree_5_tree_SIZE_t);
  int (*_resize_c)(struct __pyx_obj_8skgarden_8mondrian_4tree_5_tree_Tree *, struct __pyx_opt_args_8skgarden_8mondrian_4tree_5_tree_4Tree__resize_c *__pyx_optional_args);
  PyArrayObject *(*_get_value_ndarray)(struct __pyx_obj_8skgarden_8mondrian_4tree_5_tree_Tree *);
  PyArrayObject *(*_get_node_ndarray)(struct __pyx_obj_8skgarden_8mondrian_4tree_5_tree_Tree *);
  PyObject *(*predict)(struct __pyx_obj_8skgarden_8mondrian_4tree_5_tree_Tree *, PyObject *, int __pyx_skip_dispatch, struct __pyx_opt_args_8skgarden_8mondrian_4tree_5_tree_4Tree_predict *__pyx_optional_args);
  PyArrayObject *(*apply)(struct __pyx_obj_8skgarden_8mondrian_4tree_5_tree_Tree *, PyObject *, int __pyx_skip_dispatch);
  PyArrayObject *(*_apply_dense)(struct __pyx_obj_8skgarden_8mondrian_4tree_5_tree_Tree *, PyObject *);
  PyArrayObject *(*_apply_sparse_csr)(struct __pyx_obj_8skgarden_8mondrian_4tree_5_tree_Tree *, PyObject *);
  PyObject *(*decision_path)(struct __pyx_obj_8skgarden_8mondrian_4tree_5_tree_Tree *, PyObject *, int __pyx_skip_dispatch);
  PyObject *(*_decision_path_dense)(struct __pyx_obj_8skgarden_8mondrian_4tree_5_tree_Tree *, PyObject *);
  PyObject *(*_decision_path_sparse_csr)(struct __pyx_obj_8skgarden_8mondrian_4tree_5_tree_Tree *, PyObject *);
  PyObject *(*weighted_decision_path)(struct __pyx_obj_8skgarden_8mondrian_4tree_5_tree_Tree *, PyObject *, int __pyx_skip_dispatch);
};
static struct __pyx_vtabstruct_8skgarden_8mondrian_4tree_5_tree_Tree *__pyx_vtabptr_8skgarden_8mondrian_4tree_5_tree_Tree;


/* "_tree.pxd":91
 * # =============================================================================
 * 
 * cdef class TreeBuilder:             # <<<<<<<<<<<<<<
 *     # The TreeBuilder recursively builds a Tree object from training samples,
 *     # using a Splitter object for splitting internal nodes and assigning
 */

struct __pyx_vtabstruct_8skgarden_8mondrian_4tree_5_tree_TreeBuilder {
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/* "_utils.pxd":74
 *     SIZE_t n_constant_features
 * 
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 *     cdef SIZE_t top
 */

struct __pyx_vtabstruct_8skgarden_8mondrian_4tree_6_utils_Stack {
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  int (*pop)(struct __pyx_obj_8skgarden_8mondrian_4tree_6_utils_Stack *, struct __pyx_t_8skgarden_8mondrian_4tree_6_utils_StackRecord *);
};
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/* "skgarden/mondrian/tree/_criterion.pyx":34
 * 
 * cdef double INFINITY = np.inf
 * cdef class Criterion:             # <<<<<<<<<<<<<<
 *     """Interface for impurity criteria.
 * 
 */

struct __pyx_vtabstruct_8skgarden_8mondrian_4tree_10_criterion_Criterion {
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  int (*reset)(struct __pyx_obj_8skgarden_8mondrian_4tree_10_criterion_Criterion *);
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  double (*node_impurity)(struct __pyx_obj_8skgarden_8mondrian_4tree_10_criterion_Criterion *);
  void (*children_impurity)(struct __pyx_obj_8skgarden_8mondrian_4tree_10_criterion_Criterion *, double *, double *);
  void (*node_value)(struct __pyx_obj_8skgarden_8mondrian_4tree_10_criterion_Criterion *, double *);
  double (*impurity_improvement)(struct __pyx_obj_8skgarden_8mondrian_4tree_10_criterion_Criterion *, double);
  double (*proxy_impurity_improvement)(struct __pyx_obj_8skgarden_8mondrian_4tree_10_criterion_Criterion *);
};
static struct __pyx_vtabstruct_8skgarden_8mondrian_4tree_10_criterion_Criterion *__pyx_vtabptr_8skgarden_8mondrian_4tree_10_criterion_Criterion;


/* "skgarden/mondrian/tree/_criterion.pyx":212
 * 
 * 
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 *     """Abstract regression criterion.
 * 
 */

struct __pyx_vtabstruct_8skgarden_8mondrian_4tree_10_criterion_RegressionCriterion {
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};
static struct __pyx_vtabstruct_8skgarden_8mondrian_4tree_10_criterion_RegressionCriterion *__pyx_vtabptr_8skgarden_8mondrian_4tree_10_criterion_RegressionCriterion;


/* "skgarden/mondrian/tree/_criterion.pyx":420
 * 
 * 
 * cdef class MSE(RegressionCriterion):             # <<<<<<<<<<<<<<
 *     """Mean squared error impurity criterion.
 * 
 */

struct __pyx_vtabstruct_8skgarden_8mondrian_4tree_10_criterion_MSE {
  struct __pyx_vtabstruct_8skgarden_8mondrian_4tree_10_criterion_RegressionCriterion __pyx_base;
};
static struct __pyx_vtabstruct_8skgarden_8mondrian_4tree_10_criterion_MSE *__pyx_vtabptr_8skgarden_8mondrian_4tree_10_criterion_MSE;


/* "skgarden/mondrian/tree/_criterion.pyx":514
 * 
 * 
 * cdef class ClassificationCriterion(Criterion):             # <<<<<<<<<<<<<<
 *     """Abstract criterion for classification."""
 * 
 */

struct __pyx_vtabstruct_8skgarden_8mondrian_4tree_10_criterion_ClassificationCriterion {
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static struct __pyx_vtabstruct_8skgarden_8mondrian_4tree_10_criterion_ClassificationCriterion *__pyx_vtabptr_8skgarden_8mondrian_4tree_10_criterion_ClassificationCriterion;

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static int __pyx_f_8skgarden_8mondrian_4tree_10_criterion_9Criterion_init(CYTHON_UNUSED struct __pyx_obj_8skgarden_8mondrian_4tree_10_criterion_Criterion *__pyx_v_self, CYTHON_UNUSED __pyx_t_8skgarden_8mondrian_4tree_10_criterion_DOUBLE_t *__pyx_v_y, CYTHON_UNUSED __pyx_t_8skgarden_8mondrian_4tree_10_criterion_SIZE_t __pyx_v_y_stride, CYTHON_UNUSED __pyx_t_8skgarden_8mondrian_4tree_10_criterion_DOUBLE_t *__pyx_v_sample_weight, CYTHON_UNUSED double __pyx_v_weighted_n_samples, CYTHON_UNUSED __pyx_t_8skgarden_8mondrian_4tree_10_criterion_SIZE_t *__pyx_v_samples, CYTHON_UNUSED __pyx_t_8skgarden_8mondrian_4tree_10_criterion_SIZE_t __pyx_v_start, CYTHON_UNUSED __pyx_t_8skgarden_8mondrian_4tree_10_criterion_SIZE_t __pyx_v_end); /* proto*/
static int __pyx_f_8skgarden_8mondrian_4tree_10_criterion_9Criterion_reset(CYTHON_UNUSED struct __pyx_obj_8skgarden_8mondrian_4tree_10_criterion_Criterion *__pyx_v_self); /* proto*/
static int __pyx_f_8skgarden_8mondrian_4tree_10_criterion_9Criterion_reverse_reset(CYTHON_UNUSED struct __pyx_obj_8skgarden_8mondrian_4tree_10_criterion_Criterion *__pyx_v_self); /* proto*/
static int __pyx_f_8skgarden_8mondrian_4tree_10_criterion_9Criterion_update(CYTHON_UNUSED struct __pyx_obj_8skgarden_8mondrian_4tree_10_criterion_Criterion *__pyx_v_self, CYTHON_UNUSED __pyx_t_8skgarden_8mondrian_4tree_10_criterion_SIZE_t __pyx_v_new_pos); /* proto*/
static double __pyx_f_8skgarden_8mondrian_4tree_10_criterion_9Criterion_node_impurity(CYTHON_UNUSED struct __pyx_obj_8skgarden_8mondrian_4tree_10_criterion_Criterion *__pyx_v_self); /* proto*/
static void __pyx_f_8skgarden_8mondrian_4tree_10_criterion_9Criterion_children_impurity(CYTHON_UNUSED struct __pyx_obj_8skgarden_8mondrian_4tree_10_criterion_Criterion *__pyx_v_self, CYTHON_UNUSED double *__pyx_v_impurity_left, CYTHON_UNUSED double *__pyx_v_impurity_right); /* proto*/
static void __pyx_f_8skgarden_8mondrian_4tree_10_criterion_9Criterion_node_value(CYTHON_UNUSED struct __pyx_obj_8skgarden_8mondrian_4tree_10_criterion_Criterion *__pyx_v_self, CYTHON_UNUSED double *__pyx_v_dest); /* proto*/
static double __pyx_f_8skgarden_8mondrian_4tree_10_criterion_9Criterion_proxy_impurity_improvement(struct __pyx_obj_8skgarden_8mondrian_4tree_10_criterion_Criterion *__pyx_v_self); /* proto*/
static double __pyx_f_8skgarden_8mondrian_4tree_10_criterion_9Criterion_impurity_improvement(struct __pyx_obj_8skgarden_8mondrian_4tree_10_criterion_Criterion *__pyx_v_self, double __pyx_v_impurity); /* proto*/
static int __pyx_f_8skgarden_8mondrian_4tree_10_criterion_19RegressionCriterion_init(struct __pyx_obj_8skgarden_8mondrian_4tree_10_criterion_RegressionCriterion *__pyx_v_self, __pyx_t_8skgarden_8mondrian_4tree_10_criterion_DOUBLE_t *__pyx_v_y, __pyx_t_8skgarden_8mondrian_4tree_10_criterion_SIZE_t __pyx_v_y_stride, __pyx_t_8skgarden_8mondrian_4tree_10_criterion_DOUBLE_t *__pyx_v_sample_weight, double __pyx_v_weighted_n_samples, __pyx_t_8skgarden_8mondrian_4tree_10_criterion_SIZE_t *__pyx_v_samples, __pyx_t_8skgarden_8mondrian_4tree_10_criterion_SIZE_t __pyx_v_start, __pyx_t_8skgarden_8mondrian_4tree_10_criterion_SIZE_t __pyx_v_end); /* proto*/
static int __pyx_f_8skgarden_8mondrian_4tree_10_criterion_19RegressionCriterion_reset(struct __pyx_obj_8skgarden_8mondrian_4tree_10_criterion_RegressionCriterion *__pyx_v_self); /* proto*/
static int __pyx_f_8skgarden_8mondrian_4tree_10_criterion_19RegressionCriterion_reverse_reset(struct __pyx_obj_8skgarden_8mondrian_4tree_10_criterion_RegressionCriterion *__pyx_v_self); /* proto*/
static int __pyx_f_8skgarden_8mondrian_4tree_10_criterion_19RegressionCriterion_update(struct __pyx_obj_8skgarden_8mondrian_4tree_10_criterion_RegressionCriterion *__pyx_v_self, __pyx_t_8skgarden_8mondrian_4tree_10_criterion_SIZE_t __pyx_v_new_pos); /* proto*/
static double __pyx_f_8skgarden_8mondrian_4tree_10_criterion_19RegressionCriterion_node_impurity(CYTHON_UNUSED struct __pyx_obj_8skgarden_8mondrian_4tree_10_criterion_RegressionCriterion *__pyx_v_self); /* proto*/
static void __pyx_f_8skgarden_8mondrian_4tree_10_criterion_19RegressionCriterion_children_impurity(CYTHON_UNUSED struct __pyx_obj_8skgarden_8mondrian_4tree_10_criterion_RegressionCriterion *__pyx_v_self, CYTHON_UNUSED double *__pyx_v_impurity_left, CYTHON_UNUSED double *__pyx_v_impurity_right); /* proto*/
static void __pyx_f_8skgarden_8mondrian_4tree_10_criterion_19RegressionCriterion_node_value(struct __pyx_obj_8skgarden_8mondrian_4tree_10_criterion_RegressionCriterion *__pyx_v_self, double *__pyx_v_dest); /* proto*/
static double __pyx_f_8skgarden_8mondrian_4tree_10_criterion_3MSE_node_impurity(struct __pyx_obj_8skgarden_8mondrian_4tree_10_criterion_MSE *__pyx_v_self); /* proto*/
static double __pyx_f_8skgarden_8mondrian_4tree_10_criterion_3MSE_proxy_impurity_improvement(struct __pyx_obj_8skgarden_8mondrian_4tree_10_criterion_MSE *__pyx_v_self); /* proto*/
static void __pyx_f_8skgarden_8mondrian_4tree_10_criterion_3MSE_children_impurity(struct __pyx_obj_8skgarden_8mondrian_4tree_10_criterion_MSE *__pyx_v_self, double *__pyx_v_impurity_left, double *__pyx_v_impurity_right); /* proto*/
static int __pyx_f_8skgarden_8mondrian_4tree_10_criterion_23ClassificationCriterion_init(struct __pyx_obj_8skgarden_8mondrian_4tree_10_criterion_ClassificationCriterion *__pyx_v_self, __pyx_t_8skgarden_8mondrian_4tree_10_criterion_DOUBLE_t *__pyx_v_y, __pyx_t_8skgarden_8mondrian_4tree_10_criterion_SIZE_t __pyx_v_y_stride, __pyx_t_8skgarden_8mondrian_4tree_10_criterion_DOUBLE_t *__pyx_v_sample_weight, double __pyx_v_weighted_n_samples, __pyx_t_8skgarden_8mondrian_4tree_10_criterion_SIZE_t *__pyx_v_samples, __pyx_t_8skgarden_8mondrian_4tree_10_criterion_SIZE_t __pyx_v_start, __pyx_t_8skgarden_8mondrian_4tree_10_criterion_SIZE_t __pyx_v_end); /* proto*/
static int __pyx_f_8skgarden_8mondrian_4tree_10_criterion_23ClassificationCriterion_reset(struct __pyx_obj_8skgarden_8mondrian_4tree_10_criterion_ClassificationCriterion *__pyx_v_self); /* proto*/
static int __pyx_f_8skgarden_8mondrian_4tree_10_criterion_23ClassificationCriterion_reverse_reset(struct __pyx_obj_8skgarden_8mondrian_4tree_10_criterion_ClassificationCriterion *__pyx_v_self); /* proto*/
static int __pyx_f_8skgarden_8mondrian_4tree_10_criterion_23ClassificationCriterion_update(struct __pyx_obj_8skgarden_8mondrian_4tree_10_criterion_ClassificationCriterion *__pyx_v_self, __pyx_t_8skgarden_8mondrian_4tree_10_criterion_SIZE_t __pyx_v_new_pos); /* proto*/
static double __pyx_f_8skgarden_8mondrian_4tree_10_criterion_23ClassificationCriterion_node_impurity(CYTHON_UNUSED struct __pyx_obj_8skgarden_8mondrian_4tree_10_criterion_ClassificationCriterion *__pyx_v_self); /* proto*/
static void __pyx_f_8skgarden_8mondrian_4tree_10_criterion_23ClassificationCriterion_children_impurity(CYTHON_UNUSED struct __pyx_obj_8skgarden_8mondrian_4tree_10_criterion_ClassificationCriterion *__pyx_v_self, CYTHON_UNUSED double *__pyx_v_impurity_left, CYTHON_UNUSED double *__pyx_v_impurity_right); /* proto*/
static void __pyx_f_8skgarden_8mondrian_4tree_10_criterion_23ClassificationCriterion_node_value(struct __pyx_obj_8skgarden_8mondrian_4tree_10_criterion_ClassificationCriterion *__pyx_v_self, double *__pyx_v_dest); /* proto*/

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static CYTHON_INLINE int __pyx_f_5numpy_import_array(void); /*proto*/

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static PyTypeObject *__pyx_ptype_8skgarden_8mondrian_4tree_6_utils_Stack = 0;
static PyArrayObject *(*__pyx_f_8skgarden_8mondrian_4tree_6_utils_sizet_ptr_to_ndarray)(__pyx_t_8skgarden_8mondrian_4tree_6_utils_SIZE_t *, __pyx_t_8skgarden_8mondrian_4tree_6_utils_SIZE_t); /*proto*/
static double (*__pyx_f_8skgarden_8mondrian_4tree_6_utils_log)(double); /*proto*/
static __pyx_t_8skgarden_8mondrian_4tree_6_utils_DTYPE_t *(*__pyx_fuse_0__pyx_f_8skgarden_8mondrian_4tree_6_utils_safe_realloc)(__pyx_t_8skgarden_8mondrian_4tree_6_utils_DTYPE_t **, size_t); /*proto*/
static __pyx_t_8skgarden_8mondrian_4tree_6_utils_SIZE_t *(*__pyx_fuse_1__pyx_f_8skgarden_8mondrian_4tree_6_utils_safe_realloc)(__pyx_t_8skgarden_8mondrian_4tree_6_utils_SIZE_t **, size_t); /*proto*/
static unsigned char *(*__pyx_fuse_2__pyx_f_8skgarden_8mondrian_4tree_6_utils_safe_realloc)(unsigned char **, size_t); /*proto*/
static __pyx_t_8skgarden_8mondrian_4tree_6_utils_DOUBLE_t *(*__pyx_fuse_3__pyx_f_8skgarden_8mondrian_4tree_6_utils_safe_realloc)(__pyx_t_8skgarden_8mondrian_4tree_6_utils_DOUBLE_t **, size_t); /*proto*/
static __pyx_t_8skgarden_8mondrian_4tree_6_utils_DOUBLE_t **(*__pyx_fuse_4__pyx_f_8skgarden_8mondrian_4tree_6_utils_safe_realloc)(__pyx_t_8skgarden_8mondrian_4tree_6_utils_DOUBLE_t ***, size_t); /*proto*/
static struct __pyx_t_8skgarden_8mondrian_4tree_5_tree_Node *(*__pyx_fuse_5__pyx_f_8skgarden_8mondrian_4tree_6_utils_safe_realloc)(struct __pyx_t_8skgarden_8mondrian_4tree_5_tree_Node **, size_t); /*proto*/
static struct __pyx_t_8skgarden_8mondrian_4tree_5_tree_Node **(*__pyx_fuse_6__pyx_f_8skgarden_8mondrian_4tree_6_utils_safe_realloc)(struct __pyx_t_8skgarden_8mondrian_4tree_5_tree_Node ***, size_t); /*proto*/
static struct __pyx_t_8skgarden_8mondrian_4tree_6_utils_StackRecord *(*__pyx_fuse_7__pyx_f_8skgarden_8mondrian_4tree_6_utils_safe_realloc)(struct __pyx_t_8skgarden_8mondrian_4tree_6_utils_StackRecord **, size_t); /*proto*/

/* Module declarations from 'skgarden.mondrian.tree._criterion' */
static PyTypeObject *__pyx_ptype_8skgarden_8mondrian_4tree_10_criterion_Criterion = 0;
static PyTypeObject *__pyx_ptype_8skgarden_8mondrian_4tree_10_criterion_RegressionCriterion = 0;
static PyTypeObject *__pyx_ptype_8skgarden_8mondrian_4tree_10_criterion_MSE = 0;
static PyTypeObject *__pyx_ptype_8skgarden_8mondrian_4tree_10_criterion_ClassificationCriterion = 0;
static double __pyx_v_8skgarden_8mondrian_4tree_10_criterion_INFINITY;
static __Pyx_TypeInfo __Pyx_TypeInfo_nn___pyx_t_8skgarden_8mondrian_4tree_10_criterion_SIZE_t = { "SIZE_t", NULL, sizeof(__pyx_t_8skgarden_8mondrian_4tree_10_criterion_SIZE_t), { 0 }, 0, IS_UNSIGNED(__pyx_t_8skgarden_8mondrian_4tree_10_criterion_SIZE_t) ? 'U' : 'I', IS_UNSIGNED(__pyx_t_8skgarden_8mondrian_4tree_10_criterion_SIZE_t), 0 };
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static const char __pyx_k_ndarray_is_not_Fortran_contiguou[] = "ndarray is not Fortran contiguous";
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static PyObject *__pyx_n_s_getstate;
static PyObject *__pyx_n_s_import;
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static PyObject *__pyx_n_s_main;
static PyObject *__pyx_n_s_n_classes;
static PyObject *__pyx_n_s_n_outputs;
static PyObject *__pyx_n_s_n_samples;
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static PyObject *__pyx_kp_u_ndarray_is_not_Fortran_contiguou;
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static PyObject *__pyx_kp_s_numpy_core_multiarray_failed_to;
static PyObject *__pyx_kp_s_numpy_core_umath_failed_to_impor;
static PyObject *__pyx_n_s_pyx_vtable;
static PyObject *__pyx_n_s_range;
static PyObject *__pyx_n_s_test;
static PyObject *__pyx_kp_u_unknown_dtype_code_in_numpy_pxd;
static void __pyx_pf_8skgarden_8mondrian_4tree_10_criterion_9Criterion___dealloc__(struct __pyx_obj_8skgarden_8mondrian_4tree_10_criterion_Criterion *__pyx_v_self); /* proto */
static PyObject *__pyx_pf_8skgarden_8mondrian_4tree_10_criterion_9Criterion_2__getstate__(CYTHON_UNUSED struct __pyx_obj_8skgarden_8mondrian_4tree_10_criterion_Criterion *__pyx_v_self); /* proto */
static PyObject *__pyx_pf_8skgarden_8mondrian_4tree_10_criterion_9Criterion_4__setstate__(CYTHON_UNUSED struct __pyx_obj_8skgarden_8mondrian_4tree_10_criterion_Criterion *__pyx_v_self, CYTHON_UNUSED PyObject *__pyx_v_d); /* proto */
static int __pyx_pf_8skgarden_8mondrian_4tree_10_criterion_19RegressionCriterion___cinit__(struct __pyx_obj_8skgarden_8mondrian_4tree_10_criterion_RegressionCriterion *__pyx_v_self, __pyx_t_8skgarden_8mondrian_4tree_10_criterion_SIZE_t __pyx_v_n_outputs, __pyx_t_8skgarden_8mondrian_4tree_10_criterion_SIZE_t __pyx_v_n_samples); /* proto */
static PyObject *__pyx_pf_8skgarden_8mondrian_4tree_10_criterion_19RegressionCriterion_2__reduce__(struct __pyx_obj_8skgarden_8mondrian_4tree_10_criterion_RegressionCriterion *__pyx_v_self); /* proto */
static int __pyx_pf_8skgarden_8mondrian_4tree_10_criterion_23ClassificationCriterion___cinit__(struct __pyx_obj_8skgarden_8mondrian_4tree_10_criterion_ClassificationCriterion *__pyx_v_self, __pyx_t_8skgarden_8mondrian_4tree_10_criterion_SIZE_t __pyx_v_n_outputs, PyArrayObject *__pyx_v_n_classes); /* proto */
static void __pyx_pf_8skgarden_8mondrian_4tree_10_criterion_23ClassificationCriterion_2__dealloc__(struct __pyx_obj_8skgarden_8mondrian_4tree_10_criterion_ClassificationCriterion *__pyx_v_self); /* proto */
static PyObject *__pyx_pf_8skgarden_8mondrian_4tree_10_criterion_23ClassificationCriterion_4__reduce__(struct __pyx_obj_8skgarden_8mondrian_4tree_10_criterion_ClassificationCriterion *__pyx_v_self); /* proto */
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 *                 self.sum_total[k] += w_y_ik
 */
      __pyx_v_y_ik = (__pyx_v_y[((__pyx_v_i * __pyx_v_y_stride) + __pyx_v_k)]);

      /* "skgarden/mondrian/tree/_criterion.pyx":310
 *             for k in range(self.n_outputs):
 *                 y_ik = y[i * y_stride + k]
 *                 w_y_ik = w * y_ik             # <<<<<<<<<<<<<<
 *                 self.sum_total[k] += w_y_ik
 *                 self.sq_sum_total += w_y_ik * y_ik
 */
      __pyx_v_w_y_ik = (__pyx_v_w * __pyx_v_y_ik);

      /* "skgarden/mondrian/tree/_criterion.pyx":311
 *                 y_ik = y[i * y_stride + k]
 *                 w_y_ik = w * y_ik
 *                 self.sum_total[k] += w_y_ik             # <<<<<<<<<<<<<<
 *                 self.sq_sum_total += w_y_ik * y_ik
 * 
 */
      __pyx_t_6 = __pyx_v_k;
      (__pyx_v_self->__pyx_base.sum_total[__pyx_t_6]) = ((__pyx_v_self->__pyx_base.sum_total[__pyx_t_6]) + __pyx_v_w_y_ik);

      /* "skgarden/mondrian/tree/_criterion.pyx":312
 *                 w_y_ik = w * y_ik
 *                 self.sum_total[k] += w_y_ik
 *                 self.sq_sum_total += w_y_ik * y_ik             # <<<<<<<<<<<<<<
 * 
 *             self.weighted_n_node_samples += w
 */
      __pyx_v_self->sq_sum_total = (__pyx_v_self->sq_sum_total + (__pyx_v_w_y_ik * __pyx_v_y_ik));
    }

    /* "skgarden/mondrian/tree/_criterion.pyx":314
 *                 self.sq_sum_total += w_y_ik * y_ik
 * 
 *             self.weighted_n_node_samples += w             # <<<<<<<<<<<<<<
 * 
 *         # Reset to pos=start
 */
    __pyx_v_self->__pyx_base.weighted_n_node_samples = (__pyx_v_self->__pyx_base.weighted_n_node_samples + __pyx_v_w);
  }

  /* "skgarden/mondrian/tree/_criterion.pyx":317
 * 
 *         # Reset to pos=start
 *         self.reset()             # <<<<<<<<<<<<<<
 *         return 0
 * 
 */
  __pyx_t_7 = ((struct __pyx_vtabstruct_8skgarden_8mondrian_4tree_10_criterion_RegressionCriterion *)__pyx_v_self->__pyx_base.__pyx_vtab)->__pyx_base.reset(((struct __pyx_obj_8skgarden_8mondrian_4tree_10_criterion_Criterion *)__pyx_v_self)); if (unlikely(__pyx_t_7 == -1)) __PYX_ERR(0, 317, __pyx_L1_error)

  /* "skgarden/mondrian/tree/_criterion.pyx":318
 *         # Reset to pos=start
 *         self.reset()
 *         return 0             # <<<<<<<<<<<<<<
 * 
 *     cdef int reset(self) nogil except -1:
 */
  __pyx_r = 0;
  goto __pyx_L0;

  /* "skgarden/mondrian/tree/_criterion.pyx":276
 *         return (type(self), (self.n_outputs, self.n_samples), self.__getstate__())
 * 
 *     cdef int init(self, DOUBLE_t* y, SIZE_t y_stride, DOUBLE_t* sample_weight,             # <<<<<<<<<<<<<<
 *                   double weighted_n_samples, SIZE_t* samples, SIZE_t start,
 *                   SIZE_t end) nogil except -1:
 */

  /* function exit code */
  __pyx_L1_error:;
  {
    #ifdef WITH_THREAD
    PyGILState_STATE __pyx_gilstate_save = PyGILState_Ensure();
    #endif
    __Pyx_AddTraceback("skgarden.mondrian.tree._criterion.RegressionCriterion.init", __pyx_clineno, __pyx_lineno, __pyx_filename);
    #ifdef WITH_THREAD
    PyGILState_Release(__pyx_gilstate_save);
    #endif
  }
  __pyx_r = -1;
  __pyx_L0:;
  return __pyx_r;
}

/* "skgarden/mondrian/tree/_criterion.pyx":320
 *         return 0
 * 
 *     cdef int reset(self) nogil except -1:             # <<<<<<<<<<<<<<
 *         """Reset the criterion at pos=start."""
 *         cdef SIZE_t n_bytes = self.n_outputs * sizeof(double)
 */

static int __pyx_f_8skgarden_8mondrian_4tree_10_criterion_19RegressionCriterion_reset(struct __pyx_obj_8skgarden_8mondrian_4tree_10_criterion_RegressionCriterion *__pyx_v_self) {
  __pyx_t_8skgarden_8mondrian_4tree_10_criterion_SIZE_t __pyx_v_n_bytes;
  int __pyx_r;
  double __pyx_t_1;
  __pyx_t_8skgarden_8mondrian_4tree_10_criterion_SIZE_t __pyx_t_2;

  /* "skgarden/mondrian/tree/_criterion.pyx":322
 *     cdef int reset(self) nogil except -1:
 *         """Reset the criterion at pos=start."""
 *         cdef SIZE_t n_bytes = self.n_outputs * sizeof(double)             # <<<<<<<<<<<<<<
 *         memset(self.sum_left, 0, n_bytes)
 *         memcpy(self.sum_right, self.sum_total, n_bytes)
 */
  __pyx_v_n_bytes = (__pyx_v_self->__pyx_base.n_outputs * (sizeof(double)));

  /* "skgarden/mondrian/tree/_criterion.pyx":323
 *         """Reset the criterion at pos=start."""
 *         cdef SIZE_t n_bytes = self.n_outputs * sizeof(double)
 *         memset(self.sum_left, 0, n_bytes)             # <<<<<<<<<<<<<<
 *         memcpy(self.sum_right, self.sum_total, n_bytes)
 * 
 */
  memset(__pyx_v_self->__pyx_base.sum_left, 0, __pyx_v_n_bytes);

  /* "skgarden/mondrian/tree/_criterion.pyx":324
 *         cdef SIZE_t n_bytes = self.n_outputs * sizeof(double)
 *         memset(self.sum_left, 0, n_bytes)
 *         memcpy(self.sum_right, self.sum_total, n_bytes)             # <<<<<<<<<<<<<<
 * 
 *         self.weighted_n_left = 0.0
 */
  memcpy(__pyx_v_self->__pyx_base.sum_right, __pyx_v_self->__pyx_base.sum_total, __pyx_v_n_bytes);

  /* "skgarden/mondrian/tree/_criterion.pyx":326
 *         memcpy(self.sum_right, self.sum_total, n_bytes)
 * 
 *         self.weighted_n_left = 0.0             # <<<<<<<<<<<<<<
 *         self.weighted_n_right = self.weighted_n_node_samples
 *         self.pos = self.start
 */
  __pyx_v_self->__pyx_base.weighted_n_left = 0.0;

  /* "skgarden/mondrian/tree/_criterion.pyx":327
 * 
 *         self.weighted_n_left = 0.0
 *         self.weighted_n_right = self.weighted_n_node_samples             # <<<<<<<<<<<<<<
 *         self.pos = self.start
 *         return 0
 */
  __pyx_t_1 = __pyx_v_self->__pyx_base.weighted_n_node_samples;
  __pyx_v_self->__pyx_base.weighted_n_right = __pyx_t_1;

  /* "skgarden/mondrian/tree/_criterion.pyx":328
 *         self.weighted_n_left = 0.0
 *         self.weighted_n_right = self.weighted_n_node_samples
 *         self.pos = self.start             # <<<<<<<<<<<<<<
 *         return 0
 * 
 */
  __pyx_t_2 = __pyx_v_self->__pyx_base.start;
  __pyx_v_self->__pyx_base.pos = __pyx_t_2;

  /* "skgarden/mondrian/tree/_criterion.pyx":329
 *         self.weighted_n_right = self.weighted_n_node_samples
 *         self.pos = self.start
 *         return 0             # <<<<<<<<<<<<<<
 * 
 *     cdef int reverse_reset(self) nogil except -1:
 */
  __pyx_r = 0;
  goto __pyx_L0;

  /* "skgarden/mondrian/tree/_criterion.pyx":320
 *         return 0
 * 
 *     cdef int reset(self) nogil except -1:             # <<<<<<<<<<<<<<
 *         """Reset the criterion at pos=start."""
 *         cdef SIZE_t n_bytes = self.n_outputs * sizeof(double)
 */

  /* function exit code */
  __pyx_L0:;
  return __pyx_r;
}

/* "skgarden/mondrian/tree/_criterion.pyx":331
 *         return 0
 * 
 *     cdef int reverse_reset(self) nogil except -1:             # <<<<<<<<<<<<<<
 *         """Reset the criterion at pos=end."""
 *         cdef SIZE_t n_bytes = self.n_outputs * sizeof(double)
 */

static int __pyx_f_8skgarden_8mondrian_4tree_10_criterion_19RegressionCriterion_reverse_reset(struct __pyx_obj_8skgarden_8mondrian_4tree_10_criterion_RegressionCriterion *__pyx_v_self) {
  __pyx_t_8skgarden_8mondrian_4tree_10_criterion_SIZE_t __pyx_v_n_bytes;
  int __pyx_r;
  double __pyx_t_1;
  __pyx_t_8skgarden_8mondrian_4tree_10_criterion_SIZE_t __pyx_t_2;

  /* "skgarden/mondrian/tree/_criterion.pyx":333
 *     cdef int reverse_reset(self) nogil except -1:
 *         """Reset the criterion at pos=end."""
 *         cdef SIZE_t n_bytes = self.n_outputs * sizeof(double)             # <<<<<<<<<<<<<<
 *         memset(self.sum_right, 0, n_bytes)
 *         memcpy(self.sum_left, self.sum_total, n_bytes)
 */
  __pyx_v_n_bytes = (__pyx_v_self->__pyx_base.n_outputs * (sizeof(double)));

  /* "skgarden/mondrian/tree/_criterion.pyx":334
 *         """Reset the criterion at pos=end."""
 *         cdef SIZE_t n_bytes = self.n_outputs * sizeof(double)
 *         memset(self.sum_right, 0, n_bytes)             # <<<<<<<<<<<<<<
 *         memcpy(self.sum_left, self.sum_total, n_bytes)
 * 
 */
  memset(__pyx_v_self->__pyx_base.sum_right, 0, __pyx_v_n_bytes);

  /* "skgarden/mondrian/tree/_criterion.pyx":335
 *         cdef SIZE_t n_bytes = self.n_outputs * sizeof(double)
 *         memset(self.sum_right, 0, n_bytes)
 *         memcpy(self.sum_left, self.sum_total, n_bytes)             # <<<<<<<<<<<<<<
 * 
 *         self.weighted_n_right = 0.0
 */
  memcpy(__pyx_v_self->__pyx_base.sum_left, __pyx_v_self->__pyx_base.sum_total, __pyx_v_n_bytes);

  /* "skgarden/mondrian/tree/_criterion.pyx":337
 *         memcpy(self.sum_left, self.sum_total, n_bytes)
 * 
 *         self.weighted_n_right = 0.0             # <<<<<<<<<<<<<<
 *         self.weighted_n_left = self.weighted_n_node_samples
 *         self.pos = self.end
 */
  __pyx_v_self->__pyx_base.weighted_n_right = 0.0;

  /* "skgarden/mondrian/tree/_criterion.pyx":338
 * 
 *         self.weighted_n_right = 0.0
 *         self.weighted_n_left = self.weighted_n_node_samples             # <<<<<<<<<<<<<<
 *         self.pos = self.end
 *         return 0
 */
  __pyx_t_1 = __pyx_v_self->__pyx_base.weighted_n_node_samples;
  __pyx_v_self->__pyx_base.weighted_n_left = __pyx_t_1;

  /* "skgarden/mondrian/tree/_criterion.pyx":339
 *         self.weighted_n_right = 0.0
 *         self.weighted_n_left = self.weighted_n_node_samples
 *         self.pos = self.end             # <<<<<<<<<<<<<<
 *         return 0
 * 
 */
  __pyx_t_2 = __pyx_v_self->__pyx_base.end;
  __pyx_v_self->__pyx_base.pos = __pyx_t_2;

  /* "skgarden/mondrian/tree/_criterion.pyx":340
 *         self.weighted_n_left = self.weighted_n_node_samples
 *         self.pos = self.end
 *         return 0             # <<<<<<<<<<<<<<
 * 
 *     cdef int update(self, SIZE_t new_pos) nogil except -1:
 */
  __pyx_r = 0;
  goto __pyx_L0;

  /* "skgarden/mondrian/tree/_criterion.pyx":331
 *         return 0
 * 
 *     cdef int reverse_reset(self) nogil except -1:             # <<<<<<<<<<<<<<
 *         """Reset the criterion at pos=end."""
 *         cdef SIZE_t n_bytes = self.n_outputs * sizeof(double)
 */

  /* function exit code */
  __pyx_L0:;
  return __pyx_r;
}

/* "skgarden/mondrian/tree/_criterion.pyx":342
 *         return 0
 * 
 *     cdef int update(self, SIZE_t new_pos) nogil except -1:             # <<<<<<<<<<<<<<
 *         """Updated statistics by moving samples[pos:new_pos] to the left."""
 * 
 */

static int __pyx_f_8skgarden_8mondrian_4tree_10_criterion_19RegressionCriterion_update(struct __pyx_obj_8skgarden_8mondrian_4tree_10_criterion_RegressionCriterion *__pyx_v_self, __pyx_t_8skgarden_8mondrian_4tree_10_criterion_SIZE_t __pyx_v_new_pos) {
  double *__pyx_v_sum_left;
  double *__pyx_v_sum_right;
  double *__pyx_v_sum_total;
  double *__pyx_v_sample_weight;
  __pyx_t_8skgarden_8mondrian_4tree_10_criterion_SIZE_t *__pyx_v_samples;
  __pyx_t_8skgarden_8mondrian_4tree_10_criterion_DOUBLE_t *__pyx_v_y;
  __pyx_t_8skgarden_8mondrian_4tree_10_criterion_SIZE_t __pyx_v_pos;
  __pyx_t_8skgarden_8mondrian_4tree_10_criterion_SIZE_t __pyx_v_end;
  __pyx_t_8skgarden_8mondrian_4tree_10_criterion_SIZE_t __pyx_v_i;
  __pyx_t_8skgarden_8mondrian_4tree_10_criterion_SIZE_t __pyx_v_p;
  __pyx_t_8skgarden_8mondrian_4tree_10_criterion_SIZE_t __pyx_v_k;
  __pyx_t_8skgarden_8mondrian_4tree_10_criterion_DOUBLE_t __pyx_v_w;
  __pyx_t_8skgarden_8mondrian_4tree_10_criterion_DOUBLE_t __pyx_v_y_ik;
  int __pyx_r;
  double *__pyx_t_1;
  __pyx_t_8skgarden_8mondrian_4tree_10_criterion_DOUBLE_t *__pyx_t_2;
  __pyx_t_8skgarden_8mondrian_4tree_10_criterion_SIZE_t *__pyx_t_3;
  __pyx_t_8skgarden_8mondrian_4tree_10_criterion_SIZE_t __pyx_t_4;
  int __pyx_t_5;
  __pyx_t_8skgarden_8mondrian_4tree_10_criterion_SIZE_t __pyx_t_6;
  __pyx_t_8skgarden_8mondrian_4tree_10_criterion_SIZE_t __pyx_t_7;
  __pyx_t_8skgarden_8mondrian_4tree_10_criterion_SIZE_t __pyx_t_8;
  __pyx_t_8skgarden_8mondrian_4tree_10_criterion_SIZE_t __pyx_t_9;
  int __pyx_t_10;
  long __pyx_t_11;

  /* "skgarden/mondrian/tree/_criterion.pyx":345
 *         """Updated statistics by moving samples[pos:new_pos] to the left."""
 * 
 *         cdef double* sum_left = self.sum_left             # <<<<<<<<<<<<<<
 *         cdef double* sum_right = self.sum_right
 *         cdef double* sum_total = self.sum_total
 */
  __pyx_t_1 = __pyx_v_self->__pyx_base.sum_left;
  __pyx_v_sum_left = __pyx_t_1;

  /* "skgarden/mondrian/tree/_criterion.pyx":346
 * 
 *         cdef double* sum_left = self.sum_left
 *         cdef double* sum_right = self.sum_right             # <<<<<<<<<<<<<<
 *         cdef double* sum_total = self.sum_total
 * 
 */
  __pyx_t_1 = __pyx_v_self->__pyx_base.sum_right;
  __pyx_v_sum_right = __pyx_t_1;

  /* "skgarden/mondrian/tree/_criterion.pyx":347
 *         cdef double* sum_left = self.sum_left
 *         cdef double* sum_right = self.sum_right
 *         cdef double* sum_total = self.sum_total             # <<<<<<<<<<<<<<
 * 
 *         cdef double* sample_weight = self.sample_weight
 */
  __pyx_t_1 = __pyx_v_self->__pyx_base.sum_total;
  __pyx_v_sum_total = __pyx_t_1;

  /* "skgarden/mondrian/tree/_criterion.pyx":349
 *         cdef double* sum_total = self.sum_total
 * 
 *         cdef double* sample_weight = self.sample_weight             # <<<<<<<<<<<<<<
 *         cdef SIZE_t* samples = self.samples
 * 
 */
  __pyx_t_2 = __pyx_v_self->__pyx_base.sample_weight;
  __pyx_v_sample_weight = __pyx_t_2;

  /* "skgarden/mondrian/tree/_criterion.pyx":350
 * 
 *         cdef double* sample_weight = self.sample_weight
 *         cdef SIZE_t* samples = self.samples             # <<<<<<<<<<<<<<
 * 
 *         cdef DOUBLE_t* y = self.y
 */
  __pyx_t_3 = __pyx_v_self->__pyx_base.samples;
  __pyx_v_samples = __pyx_t_3;

  /* "skgarden/mondrian/tree/_criterion.pyx":352
 *         cdef SIZE_t* samples = self.samples
 * 
 *         cdef DOUBLE_t* y = self.y             # <<<<<<<<<<<<<<
 *         cdef SIZE_t pos = self.pos
 *         cdef SIZE_t end = self.end
 */
  __pyx_t_2 = __pyx_v_self->__pyx_base.y;
  __pyx_v_y = __pyx_t_2;

  /* "skgarden/mondrian/tree/_criterion.pyx":353
 * 
 *         cdef DOUBLE_t* y = self.y
 *         cdef SIZE_t pos = self.pos             # <<<<<<<<<<<<<<
 *         cdef SIZE_t end = self.end
 *         cdef SIZE_t i
 */
  __pyx_t_4 = __pyx_v_self->__pyx_base.pos;
  __pyx_v_pos = __pyx_t_4;

  /* "skgarden/mondrian/tree/_criterion.pyx":354
 *         cdef DOUBLE_t* y = self.y
 *         cdef SIZE_t pos = self.pos
 *         cdef SIZE_t end = self.end             # <<<<<<<<<<<<<<
 *         cdef SIZE_t i
 *         cdef SIZE_t p
 */
  __pyx_t_4 = __pyx_v_self->__pyx_base.end;
  __pyx_v_end = __pyx_t_4;

  /* "skgarden/mondrian/tree/_criterion.pyx":358
 *         cdef SIZE_t p
 *         cdef SIZE_t k
 *         cdef DOUBLE_t w = 1.0             # <<<<<<<<<<<<<<
 *         cdef DOUBLE_t y_ik
 * 
 */
  __pyx_v_w = 1.0;

  /* "skgarden/mondrian/tree/_criterion.pyx":369
 *         # of computations, i.e. from pos to new_pos or from end to new_po.
 * 
 *         if (new_pos - pos) <= (end - new_pos):             # <<<<<<<<<<<<<<
 *             for p in range(pos, new_pos):
 *                 i = samples[p]
 */
  __pyx_t_5 = (((__pyx_v_new_pos - __pyx_v_pos) <= (__pyx_v_end - __pyx_v_new_pos)) != 0);
  if (__pyx_t_5) {

    /* "skgarden/mondrian/tree/_criterion.pyx":370
 * 
 *         if (new_pos - pos) <= (end - new_pos):
 *             for p in range(pos, new_pos):             # <<<<<<<<<<<<<<
 *                 i = samples[p]
 * 
 */
    __pyx_t_4 = __pyx_v_new_pos;
    for (__pyx_t_6 = __pyx_v_pos; __pyx_t_6 < __pyx_t_4; __pyx_t_6+=1) {
      __pyx_v_p = __pyx_t_6;

      /* "skgarden/mondrian/tree/_criterion.pyx":371
 *         if (new_pos - pos) <= (end - new_pos):
 *             for p in range(pos, new_pos):
 *                 i = samples[p]             # <<<<<<<<<<<<<<
 * 
 *                 if sample_weight != NULL:
 */
      __pyx_v_i = (__pyx_v_samples[__pyx_v_p]);

      /* "skgarden/mondrian/tree/_criterion.pyx":373
 *                 i = samples[p]
 * 
 *                 if sample_weight != NULL:             # <<<<<<<<<<<<<<
 *                     w = sample_weight[i]
 * 
 */
      __pyx_t_5 = ((__pyx_v_sample_weight != NULL) != 0);
      if (__pyx_t_5) {

        /* "skgarden/mondrian/tree/_criterion.pyx":374
 * 
 *                 if sample_weight != NULL:
 *                     w = sample_weight[i]             # <<<<<<<<<<<<<<
 * 
 *                 for k in range(self.n_outputs):
 */
        __pyx_v_w = (__pyx_v_sample_weight[__pyx_v_i]);

        /* "skgarden/mondrian/tree/_criterion.pyx":373
 *                 i = samples[p]
 * 
 *                 if sample_weight != NULL:             # <<<<<<<<<<<<<<
 *                     w = sample_weight[i]
 * 
 */
      }

      /* "skgarden/mondrian/tree/_criterion.pyx":376
 *                     w = sample_weight[i]
 * 
 *                 for k in range(self.n_outputs):             # <<<<<<<<<<<<<<
 *                     y_ik = y[i * self.y_stride + k]
 *                     sum_left[k] += w * y_ik
 */
      __pyx_t_7 = __pyx_v_self->__pyx_base.n_outputs;
      for (__pyx_t_8 = 0; __pyx_t_8 < __pyx_t_7; __pyx_t_8+=1) {
        __pyx_v_k = __pyx_t_8;

        /* "skgarden/mondrian/tree/_criterion.pyx":377
 * 
 *                 for k in range(self.n_outputs):
 *                     y_ik = y[i * self.y_stride + k]             # <<<<<<<<<<<<<<
 *                     sum_left[k] += w * y_ik
 * 
 */
        __pyx_v_y_ik = (__pyx_v_y[((__pyx_v_i * __pyx_v_self->__pyx_base.y_stride) + __pyx_v_k)]);

        /* "skgarden/mondrian/tree/_criterion.pyx":378
 *                 for k in range(self.n_outputs):
 *                     y_ik = y[i * self.y_stride + k]
 *                     sum_left[k] += w * y_ik             # <<<<<<<<<<<<<<
 * 
 *                 self.weighted_n_left += w
 */
        __pyx_t_9 = __pyx_v_k;
        (__pyx_v_sum_left[__pyx_t_9]) = ((__pyx_v_sum_left[__pyx_t_9]) + (__pyx_v_w * __pyx_v_y_ik));
      }

      /* "skgarden/mondrian/tree/_criterion.pyx":380
 *                     sum_left[k] += w * y_ik
 * 
 *                 self.weighted_n_left += w             # <<<<<<<<<<<<<<
 *         else:
 *             self.reverse_reset()
 */
      __pyx_v_self->__pyx_base.weighted_n_left = (__pyx_v_self->__pyx_base.weighted_n_left + __pyx_v_w);
    }

    /* "skgarden/mondrian/tree/_criterion.pyx":369
 *         # of computations, i.e. from pos to new_pos or from end to new_po.
 * 
 *         if (new_pos - pos) <= (end - new_pos):             # <<<<<<<<<<<<<<
 *             for p in range(pos, new_pos):
 *                 i = samples[p]
 */
    goto __pyx_L3;
  }

  /* "skgarden/mondrian/tree/_criterion.pyx":382
 *                 self.weighted_n_left += w
 *         else:
 *             self.reverse_reset()             # <<<<<<<<<<<<<<
 * 
 *             for p in range(end - 1, new_pos - 1, -1):
 */
  /*else*/ {
    __pyx_t_10 = ((struct __pyx_vtabstruct_8skgarden_8mondrian_4tree_10_criterion_RegressionCriterion *)__pyx_v_self->__pyx_base.__pyx_vtab)->__pyx_base.reverse_reset(((struct __pyx_obj_8skgarden_8mondrian_4tree_10_criterion_Criterion *)__pyx_v_self)); if (unlikely(__pyx_t_10 == -1)) __PYX_ERR(0, 382, __pyx_L1_error)

    /* "skgarden/mondrian/tree/_criterion.pyx":384
 *             self.reverse_reset()
 * 
 *             for p in range(end - 1, new_pos - 1, -1):             # <<<<<<<<<<<<<<
 *                 i = samples[p]
 * 
 */
    __pyx_t_11 = (__pyx_v_new_pos - 1);
    for (__pyx_t_4 = (__pyx_v_end - 1); __pyx_t_4 > __pyx_t_11; __pyx_t_4-=1) {
      __pyx_v_p = __pyx_t_4;

      /* "skgarden/mondrian/tree/_criterion.pyx":385
 * 
 *             for p in range(end - 1, new_pos - 1, -1):
 *                 i = samples[p]             # <<<<<<<<<<<<<<
 * 
 *                 if sample_weight != NULL:
 */
      __pyx_v_i = (__pyx_v_samples[__pyx_v_p]);

      /* "skgarden/mondrian/tree/_criterion.pyx":387
 *                 i = samples[p]
 * 
 *                 if sample_weight != NULL:             # <<<<<<<<<<<<<<
 *                     w = sample_weight[i]
 * 
 */
      __pyx_t_5 = ((__pyx_v_sample_weight != NULL) != 0);
      if (__pyx_t_5) {

        /* "skgarden/mondrian/tree/_criterion.pyx":388
 * 
 *                 if sample_weight != NULL:
 *                     w = sample_weight[i]             # <<<<<<<<<<<<<<
 * 
 *                 for k in range(self.n_outputs):
 */
        __pyx_v_w = (__pyx_v_sample_weight[__pyx_v_i]);

        /* "skgarden/mondrian/tree/_criterion.pyx":387
 *                 i = samples[p]
 * 
 *                 if sample_weight != NULL:             # <<<<<<<<<<<<<<
 *                     w = sample_weight[i]
 * 
 */
      }

      /* "skgarden/mondrian/tree/_criterion.pyx":390
 *                     w = sample_weight[i]
 * 
 *                 for k in range(self.n_outputs):             # <<<<<<<<<<<<<<
 *                     y_ik = y[i * self.y_stride + k]
 *                     sum_left[k] -= w * y_ik
 */
      __pyx_t_6 = __pyx_v_self->__pyx_base.n_outputs;
      for (__pyx_t_7 = 0; __pyx_t_7 < __pyx_t_6; __pyx_t_7+=1) {
        __pyx_v_k = __pyx_t_7;

        /* "skgarden/mondrian/tree/_criterion.pyx":391
 * 
 *                 for k in range(self.n_outputs):
 *                     y_ik = y[i * self.y_stride + k]             # <<<<<<<<<<<<<<
 *                     sum_left[k] -= w * y_ik
 * 
 */
        __pyx_v_y_ik = (__pyx_v_y[((__pyx_v_i * __pyx_v_self->__pyx_base.y_stride) + __pyx_v_k)]);

        /* "skgarden/mondrian/tree/_criterion.pyx":392
 *                 for k in range(self.n_outputs):
 *                     y_ik = y[i * self.y_stride + k]
 *                     sum_left[k] -= w * y_ik             # <<<<<<<<<<<<<<
 * 
 *                 self.weighted_n_left -= w
 */
        __pyx_t_8 = __pyx_v_k;
        (__pyx_v_sum_left[__pyx_t_8]) = ((__pyx_v_sum_left[__pyx_t_8]) - (__pyx_v_w * __pyx_v_y_ik));
      }

      /* "skgarden/mondrian/tree/_criterion.pyx":394
 *                     sum_left[k] -= w * y_ik
 * 
 *                 self.weighted_n_left -= w             # <<<<<<<<<<<<<<
 * 
 *         self.weighted_n_right = (self.weighted_n_node_samples -
 */
      __pyx_v_self->__pyx_base.weighted_n_left = (__pyx_v_self->__pyx_base.weighted_n_left - __pyx_v_w);
    }
  }
  __pyx_L3:;

  /* "skgarden/mondrian/tree/_criterion.pyx":396
 *                 self.weighted_n_left -= w
 * 
 *         self.weighted_n_right = (self.weighted_n_node_samples -             # <<<<<<<<<<<<<<
 *                                  self.weighted_n_left)
 *         for k in range(self.n_outputs):
 */
  __pyx_v_self->__pyx_base.weighted_n_right = (__pyx_v_self->__pyx_base.weighted_n_node_samples - __pyx_v_self->__pyx_base.weighted_n_left);

  /* "skgarden/mondrian/tree/_criterion.pyx":398
 *         self.weighted_n_right = (self.weighted_n_node_samples -
 *                                  self.weighted_n_left)
 *         for k in range(self.n_outputs):             # <<<<<<<<<<<<<<
 *             sum_right[k] = sum_total[k] - sum_left[k]
 * 
 */
  __pyx_t_4 = __pyx_v_self->__pyx_base.n_outputs;
  for (__pyx_t_6 = 0; __pyx_t_6 < __pyx_t_4; __pyx_t_6+=1) {
    __pyx_v_k = __pyx_t_6;

    /* "skgarden/mondrian/tree/_criterion.pyx":399
 *                                  self.weighted_n_left)
 *         for k in range(self.n_outputs):
 *             sum_right[k] = sum_total[k] - sum_left[k]             # <<<<<<<<<<<<<<
 * 
 *         self.pos = new_pos
 */
    (__pyx_v_sum_right[__pyx_v_k]) = ((__pyx_v_sum_total[__pyx_v_k]) - (__pyx_v_sum_left[__pyx_v_k]));
  }

  /* "skgarden/mondrian/tree/_criterion.pyx":401
 *             sum_right[k] = sum_total[k] - sum_left[k]
 * 
 *         self.pos = new_pos             # <<<<<<<<<<<<<<
 *         return 0
 * 
 */
  __pyx_v_self->__pyx_base.pos = __pyx_v_new_pos;

  /* "skgarden/mondrian/tree/_criterion.pyx":402
 * 
 *         self.pos = new_pos
 *         return 0             # <<<<<<<<<<<<<<
 * 
 *     cdef double node_impurity(self) nogil:
 */
  __pyx_r = 0;
  goto __pyx_L0;

  /* "skgarden/mondrian/tree/_criterion.pyx":342
 *         return 0
 * 
 *     cdef int update(self, SIZE_t new_pos) nogil except -1:             # <<<<<<<<<<<<<<
 *         """Updated statistics by moving samples[pos:new_pos] to the left."""
 * 
 */

  /* function exit code */
  __pyx_L1_error:;
  {
    #ifdef WITH_THREAD
    PyGILState_STATE __pyx_gilstate_save = PyGILState_Ensure();
    #endif
    __Pyx_AddTraceback("skgarden.mondrian.tree._criterion.RegressionCriterion.update", __pyx_clineno, __pyx_lineno, __pyx_filename);
    #ifdef WITH_THREAD
    PyGILState_Release(__pyx_gilstate_save);
    #endif
  }
  __pyx_r = -1;
  __pyx_L0:;
  return __pyx_r;
}

/* "skgarden/mondrian/tree/_criterion.pyx":404
 *         return 0
 * 
 *     cdef double node_impurity(self) nogil:             # <<<<<<<<<<<<<<
 *         pass
 * 
 */

static double __pyx_f_8skgarden_8mondrian_4tree_10_criterion_19RegressionCriterion_node_impurity(CYTHON_UNUSED struct __pyx_obj_8skgarden_8mondrian_4tree_10_criterion_RegressionCriterion *__pyx_v_self) {
  double __pyx_r;

  /* function exit code */
  __pyx_r = 0;
  return __pyx_r;
}

/* "skgarden/mondrian/tree/_criterion.pyx":407
 *         pass
 * 
 *     cdef void children_impurity(self, double* impurity_left,             # <<<<<<<<<<<<<<
 *                                 double* impurity_right) nogil:
 *         pass
 */

static void __pyx_f_8skgarden_8mondrian_4tree_10_criterion_19RegressionCriterion_children_impurity(CYTHON_UNUSED struct __pyx_obj_8skgarden_8mondrian_4tree_10_criterion_RegressionCriterion *__pyx_v_self, CYTHON_UNUSED double *__pyx_v_impurity_left, CYTHON_UNUSED double *__pyx_v_impurity_right) {

  /* function exit code */
}

/* "skgarden/mondrian/tree/_criterion.pyx":411
 *         pass
 * 
 *     cdef void node_value(self, double* dest) nogil:             # <<<<<<<<<<<<<<
 *         """Compute the node value of samples[start:end] into dest."""
 * 
 */

static void __pyx_f_8skgarden_8mondrian_4tree_10_criterion_19RegressionCriterion_node_value(struct __pyx_obj_8skgarden_8mondrian_4tree_10_criterion_RegressionCriterion *__pyx_v_self, double *__pyx_v_dest) {
  __pyx_t_8skgarden_8mondrian_4tree_10_criterion_SIZE_t __pyx_v_k;
  __pyx_t_8skgarden_8mondrian_4tree_10_criterion_SIZE_t __pyx_t_1;
  __pyx_t_8skgarden_8mondrian_4tree_10_criterion_SIZE_t __pyx_t_2;

  /* "skgarden/mondrian/tree/_criterion.pyx":416
 *         cdef SIZE_t k
 * 
 *         for k in range(self.n_outputs):             # <<<<<<<<<<<<<<
 *             dest[k] = self.sum_total[k] / self.weighted_n_node_samples
 * 
 */
  __pyx_t_1 = __pyx_v_self->__pyx_base.n_outputs;
  for (__pyx_t_2 = 0; __pyx_t_2 < __pyx_t_1; __pyx_t_2+=1) {
    __pyx_v_k = __pyx_t_2;

    /* "skgarden/mondrian/tree/_criterion.pyx":417
 * 
 *         for k in range(self.n_outputs):
 *             dest[k] = self.sum_total[k] / self.weighted_n_node_samples             # <<<<<<<<<<<<<<
 * 
 * 
 */
    (__pyx_v_dest[__pyx_v_k]) = ((__pyx_v_self->__pyx_base.sum_total[__pyx_v_k]) / __pyx_v_self->__pyx_base.weighted_n_node_samples);
  }

  /* "skgarden/mondrian/tree/_criterion.pyx":411
 *         pass
 * 
 *     cdef void node_value(self, double* dest) nogil:             # <<<<<<<<<<<<<<
 *         """Compute the node value of samples[start:end] into dest."""
 * 
 */

  /* function exit code */
}

/* "skgarden/mondrian/tree/_criterion.pyx":426
 *     """
 * 
 *     cdef double node_impurity(self) nogil:             # <<<<<<<<<<<<<<
 *         """Evaluate the impurity of the current node, i.e. the impurity of
 *            samples[start:end]."""
 */

static double __pyx_f_8skgarden_8mondrian_4tree_10_criterion_3MSE_node_impurity(struct __pyx_obj_8skgarden_8mondrian_4tree_10_criterion_MSE *__pyx_v_self) {
  double *__pyx_v_sum_total;
  double __pyx_v_impurity;
  __pyx_t_8skgarden_8mondrian_4tree_10_criterion_SIZE_t __pyx_v_k;
  double __pyx_r;
  double *__pyx_t_1;
  __pyx_t_8skgarden_8mondrian_4tree_10_criterion_SIZE_t __pyx_t_2;
  __pyx_t_8skgarden_8mondrian_4tree_10_criterion_SIZE_t __pyx_t_3;

  /* "skgarden/mondrian/tree/_criterion.pyx":430
 *            samples[start:end]."""
 * 
 *         cdef double* sum_total = self.sum_total             # <<<<<<<<<<<<<<
 *         cdef double impurity
 *         cdef SIZE_t k
 */
  __pyx_t_1 = __pyx_v_self->__pyx_base.__pyx_base.sum_total;
  __pyx_v_sum_total = __pyx_t_1;

  /* "skgarden/mondrian/tree/_criterion.pyx":434
 *         cdef SIZE_t k
 * 
 *         impurity = self.sq_sum_total / self.weighted_n_node_samples             # <<<<<<<<<<<<<<
 *         for k in range(self.n_outputs):
 *             impurity -= (sum_total[k] / self.weighted_n_node_samples)**2.0
 */
  __pyx_v_impurity = (__pyx_v_self->__pyx_base.sq_sum_total / __pyx_v_self->__pyx_base.__pyx_base.weighted_n_node_samples);

  /* "skgarden/mondrian/tree/_criterion.pyx":435
 * 
 *         impurity = self.sq_sum_total / self.weighted_n_node_samples
 *         for k in range(self.n_outputs):             # <<<<<<<<<<<<<<
 *             impurity -= (sum_total[k] / self.weighted_n_node_samples)**2.0
 * 
 */
  __pyx_t_2 = __pyx_v_self->__pyx_base.__pyx_base.n_outputs;
  for (__pyx_t_3 = 0; __pyx_t_3 < __pyx_t_2; __pyx_t_3+=1) {
    __pyx_v_k = __pyx_t_3;

    /* "skgarden/mondrian/tree/_criterion.pyx":436
 *         impurity = self.sq_sum_total / self.weighted_n_node_samples
 *         for k in range(self.n_outputs):
 *             impurity -= (sum_total[k] / self.weighted_n_node_samples)**2.0             # <<<<<<<<<<<<<<
 * 
 *         return impurity / self.n_outputs
 */
    __pyx_v_impurity = (__pyx_v_impurity - pow(((__pyx_v_sum_total[__pyx_v_k]) / __pyx_v_self->__pyx_base.__pyx_base.weighted_n_node_samples), 2.0));
  }

  /* "skgarden/mondrian/tree/_criterion.pyx":438
 *             impurity -= (sum_total[k] / self.weighted_n_node_samples)**2.0
 * 
 *         return impurity / self.n_outputs             # <<<<<<<<<<<<<<
 * 
 *     cdef double proxy_impurity_improvement(self) nogil:
 */
  __pyx_r = (__pyx_v_impurity / __pyx_v_self->__pyx_base.__pyx_base.n_outputs);
  goto __pyx_L0;

  /* "skgarden/mondrian/tree/_criterion.pyx":426
 *     """
 * 
 *     cdef double node_impurity(self) nogil:             # <<<<<<<<<<<<<<
 *         """Evaluate the impurity of the current node, i.e. the impurity of
 *            samples[start:end]."""
 */

  /* function exit code */
  __pyx_L0:;
  return __pyx_r;
}

/* "skgarden/mondrian/tree/_criterion.pyx":440
 *         return impurity / self.n_outputs
 * 
 *     cdef double proxy_impurity_improvement(self) nogil:             # <<<<<<<<<<<<<<
 *         """Compute a proxy of the impurity reduction
 * 
 */

static double __pyx_f_8skgarden_8mondrian_4tree_10_criterion_3MSE_proxy_impurity_improvement(struct __pyx_obj_8skgarden_8mondrian_4tree_10_criterion_MSE *__pyx_v_self) {
  double *__pyx_v_sum_left;
  double *__pyx_v_sum_right;
  __pyx_t_8skgarden_8mondrian_4tree_10_criterion_SIZE_t __pyx_v_k;
  double __pyx_v_proxy_impurity_left;
  double __pyx_v_proxy_impurity_right;
  double __pyx_r;
  double *__pyx_t_1;
  __pyx_t_8skgarden_8mondrian_4tree_10_criterion_SIZE_t __pyx_t_2;
  __pyx_t_8skgarden_8mondrian_4tree_10_criterion_SIZE_t __pyx_t_3;

  /* "skgarden/mondrian/tree/_criterion.pyx":452
 *         """
 * 
 *         cdef double* sum_left = self.sum_left             # <<<<<<<<<<<<<<
 *         cdef double* sum_right = self.sum_right
 * 
 */
  __pyx_t_1 = __pyx_v_self->__pyx_base.__pyx_base.sum_left;
  __pyx_v_sum_left = __pyx_t_1;

  /* "skgarden/mondrian/tree/_criterion.pyx":453
 * 
 *         cdef double* sum_left = self.sum_left
 *         cdef double* sum_right = self.sum_right             # <<<<<<<<<<<<<<
 * 
 *         cdef SIZE_t k
 */
  __pyx_t_1 = __pyx_v_self->__pyx_base.__pyx_base.sum_right;
  __pyx_v_sum_right = __pyx_t_1;

  /* "skgarden/mondrian/tree/_criterion.pyx":456
 * 
 *         cdef SIZE_t k
 *         cdef double proxy_impurity_left = 0.0             # <<<<<<<<<<<<<<
 *         cdef double proxy_impurity_right = 0.0
 * 
 */
  __pyx_v_proxy_impurity_left = 0.0;

  /* "skgarden/mondrian/tree/_criterion.pyx":457
 *         cdef SIZE_t k
 *         cdef double proxy_impurity_left = 0.0
 *         cdef double proxy_impurity_right = 0.0             # <<<<<<<<<<<<<<
 * 
 *         for k in range(self.n_outputs):
 */
  __pyx_v_proxy_impurity_right = 0.0;

  /* "skgarden/mondrian/tree/_criterion.pyx":459
 *         cdef double proxy_impurity_right = 0.0
 * 
 *         for k in range(self.n_outputs):             # <<<<<<<<<<<<<<
 *             proxy_impurity_left += sum_left[k] * sum_left[k]
 *             proxy_impurity_right += sum_right[k] * sum_right[k]
 */
  __pyx_t_2 = __pyx_v_self->__pyx_base.__pyx_base.n_outputs;
  for (__pyx_t_3 = 0; __pyx_t_3 < __pyx_t_2; __pyx_t_3+=1) {
    __pyx_v_k = __pyx_t_3;

    /* "skgarden/mondrian/tree/_criterion.pyx":460
 * 
 *         for k in range(self.n_outputs):
 *             proxy_impurity_left += sum_left[k] * sum_left[k]             # <<<<<<<<<<<<<<
 *             proxy_impurity_right += sum_right[k] * sum_right[k]
 * 
 */
    __pyx_v_proxy_impurity_left = (__pyx_v_proxy_impurity_left + ((__pyx_v_sum_left[__pyx_v_k]) * (__pyx_v_sum_left[__pyx_v_k])));

    /* "skgarden/mondrian/tree/_criterion.pyx":461
 *         for k in range(self.n_outputs):
 *             proxy_impurity_left += sum_left[k] * sum_left[k]
 *             proxy_impurity_right += sum_right[k] * sum_right[k]             # <<<<<<<<<<<<<<
 * 
 *         return (proxy_impurity_left / self.weighted_n_left +
 */
    __pyx_v_proxy_impurity_right = (__pyx_v_proxy_impurity_right + ((__pyx_v_sum_right[__pyx_v_k]) * (__pyx_v_sum_right[__pyx_v_k])));
  }

  /* "skgarden/mondrian/tree/_criterion.pyx":463
 *             proxy_impurity_right += sum_right[k] * sum_right[k]
 * 
 *         return (proxy_impurity_left / self.weighted_n_left +             # <<<<<<<<<<<<<<
 *                 proxy_impurity_right / self.weighted_n_right)
 * 
 */
  __pyx_r = ((__pyx_v_proxy_impurity_left / __pyx_v_self->__pyx_base.__pyx_base.weighted_n_left) + (__pyx_v_proxy_impurity_right / __pyx_v_self->__pyx_base.__pyx_base.weighted_n_right));
  goto __pyx_L0;

  /* "skgarden/mondrian/tree/_criterion.pyx":440
 *         return impurity / self.n_outputs
 * 
 *     cdef double proxy_impurity_improvement(self) nogil:             # <<<<<<<<<<<<<<
 *         """Compute a proxy of the impurity reduction
 * 
 */

  /* function exit code */
  __pyx_L0:;
  return __pyx_r;
}

/* "skgarden/mondrian/tree/_criterion.pyx":466
 *                 proxy_impurity_right / self.weighted_n_right)
 * 
 *     cdef void children_impurity(self, double* impurity_left,             # <<<<<<<<<<<<<<
 *                                 double* impurity_right) nogil:
 *         """Evaluate the impurity in children nodes, i.e. the impurity of the
 */

static void __pyx_f_8skgarden_8mondrian_4tree_10_criterion_3MSE_children_impurity(struct __pyx_obj_8skgarden_8mondrian_4tree_10_criterion_MSE *__pyx_v_self, double *__pyx_v_impurity_left, double *__pyx_v_impurity_right) {
  __pyx_t_8skgarden_8mondrian_4tree_10_criterion_DOUBLE_t *__pyx_v_y;
  __pyx_t_8skgarden_8mondrian_4tree_10_criterion_DOUBLE_t *__pyx_v_sample_weight;
  __pyx_t_8skgarden_8mondrian_4tree_10_criterion_SIZE_t *__pyx_v_samples;
  __pyx_t_8skgarden_8mondrian_4tree_10_criterion_SIZE_t __pyx_v_pos;
  __pyx_t_8skgarden_8mondrian_4tree_10_criterion_SIZE_t __pyx_v_start;
  double *__pyx_v_sum_left;
  double *__pyx_v_sum_right;
  double __pyx_v_sq_sum_left;
  double __pyx_v_sq_sum_right;
  __pyx_t_8skgarden_8mondrian_4tree_10_criterion_SIZE_t __pyx_v_i;
  __pyx_t_8skgarden_8mondrian_4tree_10_criterion_SIZE_t __pyx_v_p;
  __pyx_t_8skgarden_8mondrian_4tree_10_criterion_SIZE_t __pyx_v_k;
  __pyx_t_8skgarden_8mondrian_4tree_10_criterion_DOUBLE_t __pyx_v_w;
  __pyx_t_8skgarden_8mondrian_4tree_10_criterion_DOUBLE_t __pyx_v_y_ik;
  __pyx_t_8skgarden_8mondrian_4tree_10_criterion_DOUBLE_t *__pyx_t_1;
  __pyx_t_8skgarden_8mondrian_4tree_10_criterion_SIZE_t *__pyx_t_2;
  __pyx_t_8skgarden_8mondrian_4tree_10_criterion_SIZE_t __pyx_t_3;
  double *__pyx_t_4;
  __pyx_t_8skgarden_8mondrian_4tree_10_criterion_SIZE_t __pyx_t_5;
  int __pyx_t_6;
  __pyx_t_8skgarden_8mondrian_4tree_10_criterion_SIZE_t __pyx_t_7;
  __pyx_t_8skgarden_8mondrian_4tree_10_criterion_SIZE_t __pyx_t_8;
  long __pyx_t_9;

  /* "skgarden/mondrian/tree/_criterion.pyx":473
 * 
 * 
 *         cdef DOUBLE_t* y = self.y             # <<<<<<<<<<<<<<
 *         cdef DOUBLE_t* sample_weight = self.sample_weight
 *         cdef SIZE_t* samples = self.samples
 */
  __pyx_t_1 = __pyx_v_self->__pyx_base.__pyx_base.y;
  __pyx_v_y = __pyx_t_1;

  /* "skgarden/mondrian/tree/_criterion.pyx":474
 * 
 *         cdef DOUBLE_t* y = self.y
 *         cdef DOUBLE_t* sample_weight = self.sample_weight             # <<<<<<<<<<<<<<
 *         cdef SIZE_t* samples = self.samples
 *         cdef SIZE_t pos = self.pos
 */
  __pyx_t_1 = __pyx_v_self->__pyx_base.__pyx_base.sample_weight;
  __pyx_v_sample_weight = __pyx_t_1;

  /* "skgarden/mondrian/tree/_criterion.pyx":475
 *         cdef DOUBLE_t* y = self.y
 *         cdef DOUBLE_t* sample_weight = self.sample_weight
 *         cdef SIZE_t* samples = self.samples             # <<<<<<<<<<<<<<
 *         cdef SIZE_t pos = self.pos
 *         cdef SIZE_t start = self.start
 */
  __pyx_t_2 = __pyx_v_self->__pyx_base.__pyx_base.samples;
  __pyx_v_samples = __pyx_t_2;

  /* "skgarden/mondrian/tree/_criterion.pyx":476
 *         cdef DOUBLE_t* sample_weight = self.sample_weight
 *         cdef SIZE_t* samples = self.samples
 *         cdef SIZE_t pos = self.pos             # <<<<<<<<<<<<<<
 *         cdef SIZE_t start = self.start
 * 
 */
  __pyx_t_3 = __pyx_v_self->__pyx_base.__pyx_base.pos;
  __pyx_v_pos = __pyx_t_3;

  /* "skgarden/mondrian/tree/_criterion.pyx":477
 *         cdef SIZE_t* samples = self.samples
 *         cdef SIZE_t pos = self.pos
 *         cdef SIZE_t start = self.start             # <<<<<<<<<<<<<<
 * 
 *         cdef double* sum_left = self.sum_left
 */
  __pyx_t_3 = __pyx_v_self->__pyx_base.__pyx_base.start;
  __pyx_v_start = __pyx_t_3;

  /* "skgarden/mondrian/tree/_criterion.pyx":479
 *         cdef SIZE_t start = self.start
 * 
 *         cdef double* sum_left = self.sum_left             # <<<<<<<<<<<<<<
 *         cdef double* sum_right = self.sum_right
 * 
 */
  __pyx_t_4 = __pyx_v_self->__pyx_base.__pyx_base.sum_left;
  __pyx_v_sum_left = __pyx_t_4;

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 *         cdef SIZE_t k
 *         cdef SIZE_t c
 *         cdef DOUBLE_t w = 1.0             # <<<<<<<<<<<<<<
 *         cdef SIZE_t offset = 0
 * 
 */
  __pyx_v_w = 1.0;

  /* "skgarden/mondrian/tree/_criterion.pyx":635
 *         cdef SIZE_t c
 *         cdef DOUBLE_t w = 1.0
 *         cdef SIZE_t offset = 0             # <<<<<<<<<<<<<<
 * 
 *         for k in range(self.n_outputs):
 */
  __pyx_v_offset = 0;

  /* "skgarden/mondrian/tree/_criterion.pyx":637
 *         cdef SIZE_t offset = 0
 * 
 *         for k in range(self.n_outputs):             # <<<<<<<<<<<<<<
 *             memset(sum_total + offset, 0, n_classes[k] * sizeof(double))
 *             offset += self.sum_stride
 */
  __pyx_t_3 = __pyx_v_self->__pyx_base.n_outputs;
  for (__pyx_t_4 = 0; __pyx_t_4 < __pyx_t_3; __pyx_t_4+=1) {
    __pyx_v_k = __pyx_t_4;

    /* "skgarden/mondrian/tree/_criterion.pyx":638
 * 
 *         for k in range(self.n_outputs):
 *             memset(sum_total + offset, 0, n_classes[k] * sizeof(double))             # <<<<<<<<<<<<<<
 *             offset += self.sum_stride
 * 
 */
    memset((__pyx_v_sum_total + __pyx_v_offset), 0, ((__pyx_v_n_classes[__pyx_v_k]) * (sizeof(double))));

    /* "skgarden/mondrian/tree/_criterion.pyx":639
 *         for k in range(self.n_outputs):
 *             memset(sum_total + offset, 0, n_classes[k] * sizeof(double))
 *             offset += self.sum_stride             # <<<<<<<<<<<<<<
 * 
 *         for p in range(start, end):
 */
    __pyx_v_offset = (__pyx_v_offset + __pyx_v_self->sum_stride);
  }

  /* "skgarden/mondrian/tree/_criterion.pyx":641
 *             offset += self.sum_stride
 * 
 *         for p in range(start, end):             # <<<<<<<<<<<<<<
 *             i = samples[p]
 * 
 */
  __pyx_t_3 = __pyx_v_end;
  for (__pyx_t_4 = __pyx_v_start; __pyx_t_4 < __pyx_t_3; __pyx_t_4+=1) {
    __pyx_v_p = __pyx_t_4;

    /* "skgarden/mondrian/tree/_criterion.pyx":642
 * 
 *         for p in range(start, end):
 *             i = samples[p]             # <<<<<<<<<<<<<<
 * 
 *             # w is originally set to be 1.0, meaning that if no sample weights
 */
    __pyx_v_i = (__pyx_v_samples[__pyx_v_p]);

    /* "skgarden/mondrian/tree/_criterion.pyx":646
 *             # w is originally set to be 1.0, meaning that if no sample weights
 *             # are given, the default weight of each sample is 1.0
 *             if sample_weight != NULL:             # <<<<<<<<<<<<<<
 *                 w = sample_weight[i]
 * 
 */
    __pyx_t_5 = ((__pyx_v_sample_weight != NULL) != 0);
    if (__pyx_t_5) {

      /* "skgarden/mondrian/tree/_criterion.pyx":647
 *             # are given, the default weight of each sample is 1.0
 *             if sample_weight != NULL:
 *                 w = sample_weight[i]             # <<<<<<<<<<<<<<
 * 
 *             # Count weighted class frequency for each target
 */
      __pyx_v_w = (__pyx_v_sample_weight[__pyx_v_i]);

      /* "skgarden/mondrian/tree/_criterion.pyx":646
 *             # w is originally set to be 1.0, meaning that if no sample weights
 *             # are given, the default weight of each sample is 1.0
 *             if sample_weight != NULL:             # <<<<<<<<<<<<<<
 *                 w = sample_weight[i]
 * 
 */
    }

    /* "skgarden/mondrian/tree/_criterion.pyx":650
 * 
 *             # Count weighted class frequency for each target
 *             for k in range(self.n_outputs):             # <<<<<<<<<<<<<<
 *                 c = <SIZE_t> y[i * y_stride + k]
 *                 sum_total[k * self.sum_stride + c] += w
 */
    __pyx_t_6 = __pyx_v_self->__pyx_base.n_outputs;
    for (__pyx_t_7 = 0; __pyx_t_7 < __pyx_t_6; __pyx_t_7+=1) {
      __pyx_v_k = __pyx_t_7;

      /* "skgarden/mondrian/tree/_criterion.pyx":651
 *             # Count weighted class frequency for each target
 *             for k in range(self.n_outputs):
 *                 c = <SIZE_t> y[i * y_stride + k]             # <<<<<<<<<<<<<<
 *                 sum_total[k * self.sum_stride + c] += w
 * 
 */
      __pyx_v_c = ((__pyx_t_8skgarden_8mondrian_4tree_10_criterion_SIZE_t)(__pyx_v_y[((__pyx_v_i * __pyx_v_y_stride) + __pyx_v_k)]));

      /* "skgarden/mondrian/tree/_criterion.pyx":652
 *             for k in range(self.n_outputs):
 *                 c = <SIZE_t> y[i * y_stride + k]
 *                 sum_total[k * self.sum_stride + c] += w             # <<<<<<<<<<<<<<
 * 
 *             self.weighted_n_node_samples += w
 */
      __pyx_t_8 = ((__pyx_v_k * __pyx_v_self->sum_stride) + __pyx_v_c);
      (__pyx_v_sum_total[__pyx_t_8]) = ((__pyx_v_sum_total[__pyx_t_8]) + __pyx_v_w);
    }

    /* "skgarden/mondrian/tree/_criterion.pyx":654
 *                 sum_total[k * self.sum_stride + c] += w
 * 
 *             self.weighted_n_node_samples += w             # <<<<<<<<<<<<<<
 * 
 *         # Reset to pos=start
 */
    __pyx_v_self->__pyx_base.weighted_n_node_samples = (__pyx_v_self->__pyx_base.weighted_n_node_samples + __pyx_v_w);
  }

  /* "skgarden/mondrian/tree/_criterion.pyx":657
 * 
 *         # Reset to pos=start
 *         self.reset()             # <<<<<<<<<<<<<<
 *         return 0
 * 
 */
  __pyx_t_9 = ((struct __pyx_vtabstruct_8skgarden_8mondrian_4tree_10_criterion_ClassificationCriterion *)__pyx_v_self->__pyx_base.__pyx_vtab)->__pyx_base.reset(((struct __pyx_obj_8skgarden_8mondrian_4tree_10_criterion_Criterion *)__pyx_v_self)); if (unlikely(__pyx_t_9 == -1)) __PYX_ERR(0, 657, __pyx_L1_error)

  /* "skgarden/mondrian/tree/_criterion.pyx":658
 *         # Reset to pos=start
 *         self.reset()
 *         return 0             # <<<<<<<<<<<<<<
 * 
 *     cdef int reset(self) nogil except -1:
 */
  __pyx_r = 0;
  goto __pyx_L0;

  /* "skgarden/mondrian/tree/_criterion.pyx":589
 *                 self.__getstate__())
 * 
 *     cdef int init(self, DOUBLE_t* y, SIZE_t y_stride,             # <<<<<<<<<<<<<<
 *                   DOUBLE_t* sample_weight, double weighted_n_samples,
 *                   SIZE_t* samples, SIZE_t start, SIZE_t end) nogil except -1:
 */

  /* function exit code */
  __pyx_L1_error:;
  {
    #ifdef WITH_THREAD
    PyGILState_STATE __pyx_gilstate_save = PyGILState_Ensure();
    #endif
    __Pyx_AddTraceback("skgarden.mondrian.tree._criterion.ClassificationCriterion.init", __pyx_clineno, __pyx_lineno, __pyx_filename);
    #ifdef WITH_THREAD
    PyGILState_Release(__pyx_gilstate_save);
    #endif
  }
  __pyx_r = -1;
  __pyx_L0:;
  return __pyx_r;
}

/* "skgarden/mondrian/tree/_criterion.pyx":660
 *         return 0
 * 
 *     cdef int reset(self) nogil except -1:             # <<<<<<<<<<<<<<
 *         """Reset the criterion at pos=start
 * 
 */

static int __pyx_f_8skgarden_8mondrian_4tree_10_criterion_23ClassificationCriterion_reset(struct __pyx_obj_8skgarden_8mondrian_4tree_10_criterion_ClassificationCriterion *__pyx_v_self) {
  double *__pyx_v_sum_total;
  double *__pyx_v_sum_left;
  double *__pyx_v_sum_right;
  __pyx_t_8skgarden_8mondrian_4tree_10_criterion_SIZE_t *__pyx_v_n_classes;
  __pyx_t_8skgarden_8mondrian_4tree_10_criterion_SIZE_t __pyx_v_k;
  int __pyx_r;
  __pyx_t_8skgarden_8mondrian_4tree_10_criterion_SIZE_t __pyx_t_1;
  double __pyx_t_2;
  double *__pyx_t_3;
  __pyx_t_8skgarden_8mondrian_4tree_10_criterion_SIZE_t *__pyx_t_4;
  __pyx_t_8skgarden_8mondrian_4tree_10_criterion_SIZE_t __pyx_t_5;

  /* "skgarden/mondrian/tree/_criterion.pyx":666
 *         or 0 otherwise.
 *         """
 *         self.pos = self.start             # <<<<<<<<<<<<<<
 * 
 *         self.weighted_n_left = 0.0
 */
  __pyx_t_1 = __pyx_v_self->__pyx_base.start;
  __pyx_v_self->__pyx_base.pos = __pyx_t_1;

  /* "skgarden/mondrian/tree/_criterion.pyx":668
 *         self.pos = self.start
 * 
 *         self.weighted_n_left = 0.0             # <<<<<<<<<<<<<<
 *         self.weighted_n_right = self.weighted_n_node_samples
 * 
 */
  __pyx_v_self->__pyx_base.weighted_n_left = 0.0;

  /* "skgarden/mondrian/tree/_criterion.pyx":669
 * 
 *         self.weighted_n_left = 0.0
 *         self.weighted_n_right = self.weighted_n_node_samples             # <<<<<<<<<<<<<<
 * 
 *         cdef double* sum_total = self.sum_total
 */
  __pyx_t_2 = __pyx_v_self->__pyx_base.weighted_n_node_samples;
  __pyx_v_self->__pyx_base.weighted_n_right = __pyx_t_2;

  /* "skgarden/mondrian/tree/_criterion.pyx":671
 *         self.weighted_n_right = self.weighted_n_node_samples
 * 
 *         cdef double* sum_total = self.sum_total             # <<<<<<<<<<<<<<
 *         cdef double* sum_left = self.sum_left
 *         cdef double* sum_right = self.sum_right
 */
  __pyx_t_3 = __pyx_v_self->__pyx_base.sum_total;
  __pyx_v_sum_total = __pyx_t_3;

  /* "skgarden/mondrian/tree/_criterion.pyx":672
 * 
 *         cdef double* sum_total = self.sum_total
 *         cdef double* sum_left = self.sum_left             # <<<<<<<<<<<<<<
 *         cdef double* sum_right = self.sum_right
 * 
 */
  __pyx_t_3 = __pyx_v_self->__pyx_base.sum_left;
  __pyx_v_sum_left = __pyx_t_3;

  /* "skgarden/mondrian/tree/_criterion.pyx":673
 *         cdef double* sum_total = self.sum_total
 *         cdef double* sum_left = self.sum_left
 *         cdef double* sum_right = self.sum_right             # <<<<<<<<<<<<<<
 * 
 *         cdef SIZE_t* n_classes = self.n_classes
 */
  __pyx_t_3 = __pyx_v_self->__pyx_base.sum_right;
  __pyx_v_sum_right = __pyx_t_3;

  /* "skgarden/mondrian/tree/_criterion.pyx":675
 *         cdef double* sum_right = self.sum_right
 * 
 *         cdef SIZE_t* n_classes = self.n_classes             # <<<<<<<<<<<<<<
 *         cdef SIZE_t k
 * 
 */
  __pyx_t_4 = __pyx_v_self->n_classes;
  __pyx_v_n_classes = __pyx_t_4;

  /* "skgarden/mondrian/tree/_criterion.pyx":678
 *         cdef SIZE_t k
 * 
 *         for k in range(self.n_outputs):             # <<<<<<<<<<<<<<
 *             memset(sum_left, 0, n_classes[k] * sizeof(double))
 *             memcpy(sum_right, sum_total, n_classes[k] * sizeof(double))
 */
  __pyx_t_1 = __pyx_v_self->__pyx_base.n_outputs;
  for (__pyx_t_5 = 0; __pyx_t_5 < __pyx_t_1; __pyx_t_5+=1) {
    __pyx_v_k = __pyx_t_5;

    /* "skgarden/mondrian/tree/_criterion.pyx":679
 * 
 *         for k in range(self.n_outputs):
 *             memset(sum_left, 0, n_classes[k] * sizeof(double))             # <<<<<<<<<<<<<<
 *             memcpy(sum_right, sum_total, n_classes[k] * sizeof(double))
 * 
 */
    memset(__pyx_v_sum_left, 0, ((__pyx_v_n_classes[__pyx_v_k]) * (sizeof(double))));

    /* "skgarden/mondrian/tree/_criterion.pyx":680
 *         for k in range(self.n_outputs):
 *             memset(sum_left, 0, n_classes[k] * sizeof(double))
 *             memcpy(sum_right, sum_total, n_classes[k] * sizeof(double))             # <<<<<<<<<<<<<<
 * 
 *             sum_total += self.sum_stride
 */
    memcpy(__pyx_v_sum_right, __pyx_v_sum_total, ((__pyx_v_n_classes[__pyx_v_k]) * (sizeof(double))));

    /* "skgarden/mondrian/tree/_criterion.pyx":682
 *             memcpy(sum_right, sum_total, n_classes[k] * sizeof(double))
 * 
 *             sum_total += self.sum_stride             # <<<<<<<<<<<<<<
 *             sum_left += self.sum_stride
 *             sum_right += self.sum_stride
 */
    __pyx_v_sum_total = (__pyx_v_sum_total + __pyx_v_self->sum_stride);

    /* "skgarden/mondrian/tree/_criterion.pyx":683
 * 
 *             sum_total += self.sum_stride
 *             sum_left += self.sum_stride             # <<<<<<<<<<<<<<
 *             sum_right += self.sum_stride
 *         return 0
 */
    __pyx_v_sum_left = (__pyx_v_sum_left + __pyx_v_self->sum_stride);

    /* "skgarden/mondrian/tree/_criterion.pyx":684
 *             sum_total += self.sum_stride
 *             sum_left += self.sum_stride
 *             sum_right += self.sum_stride             # <<<<<<<<<<<<<<
 *         return 0
 * 
 */
    __pyx_v_sum_right = (__pyx_v_sum_right + __pyx_v_self->sum_stride);
  }

  /* "skgarden/mondrian/tree/_criterion.pyx":685
 *             sum_left += self.sum_stride
 *             sum_right += self.sum_stride
 *         return 0             # <<<<<<<<<<<<<<
 * 
 *     cdef int reverse_reset(self) nogil except -1:
 */
  __pyx_r = 0;
  goto __pyx_L0;

  /* "skgarden/mondrian/tree/_criterion.pyx":660
 *         return 0
 * 
 *     cdef int reset(self) nogil except -1:             # <<<<<<<<<<<<<<
 *         """Reset the criterion at pos=start
 * 
 */

  /* function exit code */
  __pyx_L0:;
  return __pyx_r;
}

/* "skgarden/mondrian/tree/_criterion.pyx":687
 *         return 0
 * 
 *     cdef int reverse_reset(self) nogil except -1:             # <<<<<<<<<<<<<<
 *         """Reset the criterion at pos=end
 * 
 */

static int __pyx_f_8skgarden_8mondrian_4tree_10_criterion_23ClassificationCriterion_reverse_reset(struct __pyx_obj_8skgarden_8mondrian_4tree_10_criterion_ClassificationCriterion *__pyx_v_self) {
  double *__pyx_v_sum_total;
  double *__pyx_v_sum_left;
  double *__pyx_v_sum_right;
  __pyx_t_8skgarden_8mondrian_4tree_10_criterion_SIZE_t *__pyx_v_n_classes;
  __pyx_t_8skgarden_8mondrian_4tree_10_criterion_SIZE_t __pyx_v_k;
  int __pyx_r;
  __pyx_t_8skgarden_8mondrian_4tree_10_criterion_SIZE_t __pyx_t_1;
  double __pyx_t_2;
  double *__pyx_t_3;
  __pyx_t_8skgarden_8mondrian_4tree_10_criterion_SIZE_t *__pyx_t_4;
  __pyx_t_8skgarden_8mondrian_4tree_10_criterion_SIZE_t __pyx_t_5;

  /* "skgarden/mondrian/tree/_criterion.pyx":693
 *         or 0 otherwise.
 *         """
 *         self.pos = self.end             # <<<<<<<<<<<<<<
 * 
 *         self.weighted_n_left = self.weighted_n_node_samples
 */
  __pyx_t_1 = __pyx_v_self->__pyx_base.end;
  __pyx_v_self->__pyx_base.pos = __pyx_t_1;

  /* "skgarden/mondrian/tree/_criterion.pyx":695
 *         self.pos = self.end
 * 
 *         self.weighted_n_left = self.weighted_n_node_samples             # <<<<<<<<<<<<<<
 *         self.weighted_n_right = 0.0
 * 
 */
  __pyx_t_2 = __pyx_v_self->__pyx_base.weighted_n_node_samples;
  __pyx_v_self->__pyx_base.weighted_n_left = __pyx_t_2;

  /* "skgarden/mondrian/tree/_criterion.pyx":696
 * 
 *         self.weighted_n_left = self.weighted_n_node_samples
 *         self.weighted_n_right = 0.0             # <<<<<<<<<<<<<<
 * 
 *         cdef double* sum_total = self.sum_total
 */
  __pyx_v_self->__pyx_base.weighted_n_right = 0.0;

  /* "skgarden/mondrian/tree/_criterion.pyx":698
 *         self.weighted_n_right = 0.0
 * 
 *         cdef double* sum_total = self.sum_total             # <<<<<<<<<<<<<<
 *         cdef double* sum_left = self.sum_left
 *         cdef double* sum_right = self.sum_right
 */
  __pyx_t_3 = __pyx_v_self->__pyx_base.sum_total;
  __pyx_v_sum_total = __pyx_t_3;

  /* "skgarden/mondrian/tree/_criterion.pyx":699
 * 
 *         cdef double* sum_total = self.sum_total
 *         cdef double* sum_left = self.sum_left             # <<<<<<<<<<<<<<
 *         cdef double* sum_right = self.sum_right
 * 
 */
  __pyx_t_3 = __pyx_v_self->__pyx_base.sum_left;
  __pyx_v_sum_left = __pyx_t_3;

  /* "skgarden/mondrian/tree/_criterion.pyx":700
 *         cdef double* sum_total = self.sum_total
 *         cdef double* sum_left = self.sum_left
 *         cdef double* sum_right = self.sum_right             # <<<<<<<<<<<<<<
 * 
 *         cdef SIZE_t* n_classes = self.n_classes
 */
  __pyx_t_3 = __pyx_v_self->__pyx_base.sum_right;
  __pyx_v_sum_right = __pyx_t_3;

  /* "skgarden/mondrian/tree/_criterion.pyx":702
 *         cdef double* sum_right = self.sum_right
 * 
 *         cdef SIZE_t* n_classes = self.n_classes             # <<<<<<<<<<<<<<
 *         cdef SIZE_t k
 * 
 */
  __pyx_t_4 = __pyx_v_self->n_classes;
  __pyx_v_n_classes = __pyx_t_4;

  /* "skgarden/mondrian/tree/_criterion.pyx":705
 *         cdef SIZE_t k
 * 
 *         for k in range(self.n_outputs):             # <<<<<<<<<<<<<<
 *             memset(sum_right, 0, n_classes[k] * sizeof(double))
 *             memcpy(sum_left, sum_total, n_classes[k] * sizeof(double))
 */
  __pyx_t_1 = __pyx_v_self->__pyx_base.n_outputs;
  for (__pyx_t_5 = 0; __pyx_t_5 < __pyx_t_1; __pyx_t_5+=1) {
    __pyx_v_k = __pyx_t_5;

    /* "skgarden/mondrian/tree/_criterion.pyx":706
 * 
 *         for k in range(self.n_outputs):
 *             memset(sum_right, 0, n_classes[k] * sizeof(double))             # <<<<<<<<<<<<<<
 *             memcpy(sum_left, sum_total, n_classes[k] * sizeof(double))
 * 
 */
    memset(__pyx_v_sum_right, 0, ((__pyx_v_n_classes[__pyx_v_k]) * (sizeof(double))));

    /* "skgarden/mondrian/tree/_criterion.pyx":707
 *         for k in range(self.n_outputs):
 *             memset(sum_right, 0, n_classes[k] * sizeof(double))
 *             memcpy(sum_left, sum_total, n_classes[k] * sizeof(double))             # <<<<<<<<<<<<<<
 * 
 *             sum_total += self.sum_stride
 */
    memcpy(__pyx_v_sum_left, __pyx_v_sum_total, ((__pyx_v_n_classes[__pyx_v_k]) * (sizeof(double))));

    /* "skgarden/mondrian/tree/_criterion.pyx":709
 *             memcpy(sum_left, sum_total, n_classes[k] * sizeof(double))
 * 
 *             sum_total += self.sum_stride             # <<<<<<<<<<<<<<
 *             sum_left += self.sum_stride
 *             sum_right += self.sum_stride
 */
    __pyx_v_sum_total = (__pyx_v_sum_total + __pyx_v_self->sum_stride);

    /* "skgarden/mondrian/tree/_criterion.pyx":710
 * 
 *             sum_total += self.sum_stride
 *             sum_left += self.sum_stride             # <<<<<<<<<<<<<<
 *             sum_right += self.sum_stride
 *         return 0
 */
    __pyx_v_sum_left = (__pyx_v_sum_left + __pyx_v_self->sum_stride);

    /* "skgarden/mondrian/tree/_criterion.pyx":711
 *             sum_total += self.sum_stride
 *             sum_left += self.sum_stride
 *             sum_right += self.sum_stride             # <<<<<<<<<<<<<<
 *         return 0
 * 
 */
    __pyx_v_sum_right = (__pyx_v_sum_right + __pyx_v_self->sum_stride);
  }

  /* "skgarden/mondrian/tree/_criterion.pyx":712
 *             sum_left += self.sum_stride
 *             sum_right += self.sum_stride
 *         return 0             # <<<<<<<<<<<<<<
 * 
 *     cdef int update(self, SIZE_t new_pos) nogil except -1:
 */
  __pyx_r = 0;
  goto __pyx_L0;

  /* "skgarden/mondrian/tree/_criterion.pyx":687
 *         return 0
 * 
 *     cdef int reverse_reset(self) nogil except -1:             # <<<<<<<<<<<<<<
 *         """Reset the criterion at pos=end
 * 
 */

  /* function exit code */
  __pyx_L0:;
  return __pyx_r;
}

/* "skgarden/mondrian/tree/_criterion.pyx":714
 *         return 0
 * 
 *     cdef int update(self, SIZE_t new_pos) nogil except -1:             # <<<<<<<<<<<<<<
 *         """Updated statistics by moving samples[pos:new_pos] to the left child.
 * 
 */

static int __pyx_f_8skgarden_8mondrian_4tree_10_criterion_23ClassificationCriterion_update(struct __pyx_obj_8skgarden_8mondrian_4tree_10_criterion_ClassificationCriterion *__pyx_v_self, __pyx_t_8skgarden_8mondrian_4tree_10_criterion_SIZE_t __pyx_v_new_pos) {
  __pyx_t_8skgarden_8mondrian_4tree_10_criterion_DOUBLE_t *__pyx_v_y;
  __pyx_t_8skgarden_8mondrian_4tree_10_criterion_SIZE_t __pyx_v_pos;
  __pyx_t_8skgarden_8mondrian_4tree_10_criterion_SIZE_t __pyx_v_end;
  double *__pyx_v_sum_left;
  double *__pyx_v_sum_right;
  double *__pyx_v_sum_total;
  __pyx_t_8skgarden_8mondrian_4tree_10_criterion_SIZE_t *__pyx_v_n_classes;
  __pyx_t_8skgarden_8mondrian_4tree_10_criterion_SIZE_t *__pyx_v_samples;
  __pyx_t_8skgarden_8mondrian_4tree_10_criterion_DOUBLE_t *__pyx_v_sample_weight;
  __pyx_t_8skgarden_8mondrian_4tree_10_criterion_SIZE_t __pyx_v_i;
  __pyx_t_8skgarden_8mondrian_4tree_10_criterion_SIZE_t __pyx_v_p;
  __pyx_t_8skgarden_8mondrian_4tree_10_criterion_SIZE_t __pyx_v_k;
  __pyx_t_8skgarden_8mondrian_4tree_10_criterion_SIZE_t __pyx_v_c;
  __pyx_t_8skgarden_8mondrian_4tree_10_criterion_SIZE_t __pyx_v_label_index;
  __pyx_t_8skgarden_8mondrian_4tree_10_criterion_DOUBLE_t __pyx_v_w;
  int __pyx_r;
  __pyx_t_8skgarden_8mondrian_4tree_10_criterion_DOUBLE_t *__pyx_t_1;
  __pyx_t_8skgarden_8mondrian_4tree_10_criterion_SIZE_t __pyx_t_2;
  double *__pyx_t_3;
  __pyx_t_8skgarden_8mondrian_4tree_10_criterion_SIZE_t *__pyx_t_4;
  int __pyx_t_5;
  __pyx_t_8skgarden_8mondrian_4tree_10_criterion_SIZE_t __pyx_t_6;
  __pyx_t_8skgarden_8mondrian_4tree_10_criterion_SIZE_t __pyx_t_7;
  __pyx_t_8skgarden_8mondrian_4tree_10_criterion_SIZE_t __pyx_t_8;
  __pyx_t_8skgarden_8mondrian_4tree_10_criterion_SIZE_t __pyx_t_9;
  int __pyx_t_10;
  long __pyx_t_11;

  /* "skgarden/mondrian/tree/_criterion.pyx":726
 *             child to the left child.
 *         """
 *         cdef DOUBLE_t* y = self.y             # <<<<<<<<<<<<<<
 *         cdef SIZE_t pos = self.pos
 *         cdef SIZE_t end = self.end
 */
  __pyx_t_1 = __pyx_v_self->__pyx_base.y;
  __pyx_v_y = __pyx_t_1;

  /* "skgarden/mondrian/tree/_criterion.pyx":727
 *         """
 *         cdef DOUBLE_t* y = self.y
 *         cdef SIZE_t pos = self.pos             # <<<<<<<<<<<<<<
 *         cdef SIZE_t end = self.end
 * 
 */
  __pyx_t_2 = __pyx_v_self->__pyx_base.pos;
  __pyx_v_pos = __pyx_t_2;

  /* "skgarden/mondrian/tree/_criterion.pyx":728
 *         cdef DOUBLE_t* y = self.y
 *         cdef SIZE_t pos = self.pos
 *         cdef SIZE_t end = self.end             # <<<<<<<<<<<<<<
 * 
 *         cdef double* sum_left = self.sum_left
 */
  __pyx_t_2 = __pyx_v_self->__pyx_base.end;
  __pyx_v_end = __pyx_t_2;

  /* "skgarden/mondrian/tree/_criterion.pyx":730
 *         cdef SIZE_t end = self.end
 * 
 *         cdef double* sum_left = self.sum_left             # <<<<<<<<<<<<<<
 *         cdef double* sum_right = self.sum_right
 *         cdef double* sum_total = self.sum_total
 */
  __pyx_t_3 = __pyx_v_self->__pyx_base.sum_left;
  __pyx_v_sum_left = __pyx_t_3;

  /* "skgarden/mondrian/tree/_criterion.pyx":731
 * 
 *         cdef double* sum_left = self.sum_left
 *         cdef double* sum_right = self.sum_right             # <<<<<<<<<<<<<<
 *         cdef double* sum_total = self.sum_total
 * 
 */
  __pyx_t_3 = __pyx_v_self->__pyx_base.sum_right;
  __pyx_v_sum_right = __pyx_t_3;

  /* "skgarden/mondrian/tree/_criterion.pyx":732
 *         cdef double* sum_left = self.sum_left
 *         cdef double* sum_right = self.sum_right
 *         cdef double* sum_total = self.sum_total             # <<<<<<<<<<<<<<
 * 
 *         cdef SIZE_t* n_classes = self.n_classes
 */
  __pyx_t_3 = __pyx_v_self->__pyx_base.sum_total;
  __pyx_v_sum_total = __pyx_t_3;

  /* "skgarden/mondrian/tree/_criterion.pyx":734
 *         cdef double* sum_total = self.sum_total
 * 
 *         cdef SIZE_t* n_classes = self.n_classes             # <<<<<<<<<<<<<<
 *         cdef SIZE_t* samples = self.samples
 *         cdef DOUBLE_t* sample_weight = self.sample_weight
 */
  __pyx_t_4 = __pyx_v_self->n_classes;
  __pyx_v_n_classes = __pyx_t_4;

  /* "skgarden/mondrian/tree/_criterion.pyx":735
 * 
 *         cdef SIZE_t* n_classes = self.n_classes
 *         cdef SIZE_t* samples = self.samples             # <<<<<<<<<<<<<<
 *         cdef DOUBLE_t* sample_weight = self.sample_weight
 * 
 */
  __pyx_t_4 = __pyx_v_self->__pyx_base.samples;
  __pyx_v_samples = __pyx_t_4;

  /* "skgarden/mondrian/tree/_criterion.pyx":736
 *         cdef SIZE_t* n_classes = self.n_classes
 *         cdef SIZE_t* samples = self.samples
 *         cdef DOUBLE_t* sample_weight = self.sample_weight             # <<<<<<<<<<<<<<
 * 
 *         cdef SIZE_t i
 */
  __pyx_t_1 = __pyx_v_self->__pyx_base.sample_weight;
  __pyx_v_sample_weight = __pyx_t_1;

  /* "skgarden/mondrian/tree/_criterion.pyx":743
 *         cdef SIZE_t c
 *         cdef SIZE_t label_index
 *         cdef DOUBLE_t w = 1.0             # <<<<<<<<<<<<<<
 * 
 *         # Update statistics up to new_pos
 */
  __pyx_v_w = 1.0;

  /* "skgarden/mondrian/tree/_criterion.pyx":753
 *         # of computations, i.e. from pos to new_pos or from end to new_po.
 * 
 *         if (new_pos - pos) <= (end - new_pos):             # <<<<<<<<<<<<<<
 *             for p in range(pos, new_pos):
 *                 i = samples[p]
 */
  __pyx_t_5 = (((__pyx_v_new_pos - __pyx_v_pos) <= (__pyx_v_end - __pyx_v_new_pos)) != 0);
  if (__pyx_t_5) {

    /* "skgarden/mondrian/tree/_criterion.pyx":754
 * 
 *         if (new_pos - pos) <= (end - new_pos):
 *             for p in range(pos, new_pos):             # <<<<<<<<<<<<<<
 *                 i = samples[p]
 * 
 */
    __pyx_t_2 = __pyx_v_new_pos;
    for (__pyx_t_6 = __pyx_v_pos; __pyx_t_6 < __pyx_t_2; __pyx_t_6+=1) {
      __pyx_v_p = __pyx_t_6;

      /* "skgarden/mondrian/tree/_criterion.pyx":755
 *         if (new_pos - pos) <= (end - new_pos):
 *             for p in range(pos, new_pos):
 *                 i = samples[p]             # <<<<<<<<<<<<<<
 * 
 *                 if sample_weight != NULL:
 */
      __pyx_v_i = (__pyx_v_samples[__pyx_v_p]);

      /* "skgarden/mondrian/tree/_criterion.pyx":757
 *                 i = samples[p]
 * 
 *                 if sample_weight != NULL:             # <<<<<<<<<<<<<<
 *                     w = sample_weight[i]
 * 
 */
      __pyx_t_5 = ((__pyx_v_sample_weight != NULL) != 0);
      if (__pyx_t_5) {

        /* "skgarden/mondrian/tree/_criterion.pyx":758
 * 
 *                 if sample_weight != NULL:
 *                     w = sample_weight[i]             # <<<<<<<<<<<<<<
 * 
 *                 for k in range(self.n_outputs):
 */
        __pyx_v_w = (__pyx_v_sample_weight[__pyx_v_i]);

        /* "skgarden/mondrian/tree/_criterion.pyx":757
 *                 i = samples[p]
 * 
 *                 if sample_weight != NULL:             # <<<<<<<<<<<<<<
 *                     w = sample_weight[i]
 * 
 */
      }

      /* "skgarden/mondrian/tree/_criterion.pyx":760
 *                     w = sample_weight[i]
 * 
 *                 for k in range(self.n_outputs):             # <<<<<<<<<<<<<<
 *                     label_index = (k * self.sum_stride +
 *                                    <SIZE_t> y[i * self.y_stride + k])
 */
      __pyx_t_7 = __pyx_v_self->__pyx_base.n_outputs;
      for (__pyx_t_8 = 0; __pyx_t_8 < __pyx_t_7; __pyx_t_8+=1) {
        __pyx_v_k = __pyx_t_8;

        /* "skgarden/mondrian/tree/_criterion.pyx":761
 * 
 *                 for k in range(self.n_outputs):
 *                     label_index = (k * self.sum_stride +             # <<<<<<<<<<<<<<
 *                                    <SIZE_t> y[i * self.y_stride + k])
 *                     sum_left[label_index] += w
 */
        __pyx_v_label_index = ((__pyx_v_k * __pyx_v_self->sum_stride) + ((__pyx_t_8skgarden_8mondrian_4tree_10_criterion_SIZE_t)(__pyx_v_y[((__pyx_v_i * __pyx_v_self->__pyx_base.y_stride) + __pyx_v_k)])));

        /* "skgarden/mondrian/tree/_criterion.pyx":763
 *                     label_index = (k * self.sum_stride +
 *                                    <SIZE_t> y[i * self.y_stride + k])
 *                     sum_left[label_index] += w             # <<<<<<<<<<<<<<
 * 
 *                 self.weighted_n_left += w
 */
        __pyx_t_9 = __pyx_v_label_index;
        (__pyx_v_sum_left[__pyx_t_9]) = ((__pyx_v_sum_left[__pyx_t_9]) + __pyx_v_w);
      }

      /* "skgarden/mondrian/tree/_criterion.pyx":765
 *                     sum_left[label_index] += w
 * 
 *                 self.weighted_n_left += w             # <<<<<<<<<<<<<<
 * 
 *         else:
 */
      __pyx_v_self->__pyx_base.weighted_n_left = (__pyx_v_self->__pyx_base.weighted_n_left + __pyx_v_w);
    }

    /* "skgarden/mondrian/tree/_criterion.pyx":753
 *         # of computations, i.e. from pos to new_pos or from end to new_po.
 * 
 *         if (new_pos - pos) <= (end - new_pos):             # <<<<<<<<<<<<<<
 *             for p in range(pos, new_pos):
 *                 i = samples[p]
 */
    goto __pyx_L3;
  }

  /* "skgarden/mondrian/tree/_criterion.pyx":768
 * 
 *         else:
 *             self.reverse_reset()             # <<<<<<<<<<<<<<
 * 
 *             for p in range(end - 1, new_pos - 1, -1):
 */
  /*else*/ {
    __pyx_t_10 = ((struct __pyx_vtabstruct_8skgarden_8mondrian_4tree_10_criterion_ClassificationCriterion *)__pyx_v_self->__pyx_base.__pyx_vtab)->__pyx_base.reverse_reset(((struct __pyx_obj_8skgarden_8mondrian_4tree_10_criterion_Criterion *)__pyx_v_self)); if (unlikely(__pyx_t_10 == -1)) __PYX_ERR(0, 768, __pyx_L1_error)

    /* "skgarden/mondrian/tree/_criterion.pyx":770
 *             self.reverse_reset()
 * 
 *             for p in range(end - 1, new_pos - 1, -1):             # <<<<<<<<<<<<<<
 *                 i = samples[p]
 * 
 */
    __pyx_t_11 = (__pyx_v_new_pos - 1);
    for (__pyx_t_2 = (__pyx_v_end - 1); __pyx_t_2 > __pyx_t_11; __pyx_t_2-=1) {
      __pyx_v_p = __pyx_t_2;

      /* "skgarden/mondrian/tree/_criterion.pyx":771
 * 
 *             for p in range(end - 1, new_pos - 1, -1):
 *                 i = samples[p]             # <<<<<<<<<<<<<<
 * 
 *                 if sample_weight != NULL:
 */
      __pyx_v_i = (__pyx_v_samples[__pyx_v_p]);

      /* "skgarden/mondrian/tree/_criterion.pyx":773
 *                 i = samples[p]
 * 
 *                 if sample_weight != NULL:             # <<<<<<<<<<<<<<
 *                     w = sample_weight[i]
 * 
 */
      __pyx_t_5 = ((__pyx_v_sample_weight != NULL) != 0);
      if (__pyx_t_5) {

        /* "skgarden/mondrian/tree/_criterion.pyx":774
 * 
 *                 if sample_weight != NULL:
 *                     w = sample_weight[i]             # <<<<<<<<<<<<<<
 * 
 *                 for k in range(self.n_outputs):
 */
        __pyx_v_w = (__pyx_v_sample_weight[__pyx_v_i]);

        /* "skgarden/mondrian/tree/_criterion.pyx":773
 *                 i = samples[p]
 * 
 *                 if sample_weight != NULL:             # <<<<<<<<<<<<<<
 *                     w = sample_weight[i]
 * 
 */
      }

      /* "skgarden/mondrian/tree/_criterion.pyx":776
 *                     w = sample_weight[i]
 * 
 *                 for k in range(self.n_outputs):             # <<<<<<<<<<<<<<
 *                     label_index = (k * self.sum_stride +
 *                                    <SIZE_t> y[i * self.y_stride + k])
 */
      __pyx_t_6 = __pyx_v_self->__pyx_base.n_outputs;
      for (__pyx_t_7 = 0; __pyx_t_7 < __pyx_t_6; __pyx_t_7+=1) {
        __pyx_v_k = __pyx_t_7;

        /* "skgarden/mondrian/tree/_criterion.pyx":777
 * 
 *                 for k in range(self.n_outputs):
 *                     label_index = (k * self.sum_stride +             # <<<<<<<<<<<<<<
 *                                    <SIZE_t> y[i * self.y_stride + k])
 *                     sum_left[label_index] -= w
 */
        __pyx_v_label_index = ((__pyx_v_k * __pyx_v_self->sum_stride) + ((__pyx_t_8skgarden_8mondrian_4tree_10_criterion_SIZE_t)(__pyx_v_y[((__pyx_v_i * __pyx_v_self->__pyx_base.y_stride) + __pyx_v_k)])));

        /* "skgarden/mondrian/tree/_criterion.pyx":779
 *                     label_index = (k * self.sum_stride +
 *                                    <SIZE_t> y[i * self.y_stride + k])
 *                     sum_left[label_index] -= w             # <<<<<<<<<<<<<<
 * 
 *                 self.weighted_n_left -= w
 */
        __pyx_t_8 = __pyx_v_label_index;
        (__pyx_v_sum_left[__pyx_t_8]) = ((__pyx_v_sum_left[__pyx_t_8]) - __pyx_v_w);
      }

      /* "skgarden/mondrian/tree/_criterion.pyx":781
 *                     sum_left[label_index] -= w
 * 
 *                 self.weighted_n_left -= w             # <<<<<<<<<<<<<<
 * 
 *         # Update right part statistics
 */
      __pyx_v_self->__pyx_base.weighted_n_left = (__pyx_v_self->__pyx_base.weighted_n_left - __pyx_v_w);
    }
  }
  __pyx_L3:;

  /* "skgarden/mondrian/tree/_criterion.pyx":784
 * 
 *         # Update right part statistics
 *         self.weighted_n_right = self.weighted_n_node_samples - self.weighted_n_left             # <<<<<<<<<<<<<<
 *         for k in range(self.n_outputs):
 *             for c in range(n_classes[k]):
 */
  __pyx_v_self->__pyx_base.weighted_n_right = (__pyx_v_self->__pyx_base.weighted_n_node_samples - __pyx_v_self->__pyx_base.weighted_n_left);

  /* "skgarden/mondrian/tree/_criterion.pyx":785
 *         # Update right part statistics
 *         self.weighted_n_right = self.weighted_n_node_samples - self.weighted_n_left
 *         for k in range(self.n_outputs):             # <<<<<<<<<<<<<<
 *             for c in range(n_classes[k]):
 *                 sum_right[c] = sum_total[c] - sum_left[c]
 */
  __pyx_t_2 = __pyx_v_self->__pyx_base.n_outputs;
  for (__pyx_t_6 = 0; __pyx_t_6 < __pyx_t_2; __pyx_t_6+=1) {
    __pyx_v_k = __pyx_t_6;

    /* "skgarden/mondrian/tree/_criterion.pyx":786
 *         self.weighted_n_right = self.weighted_n_node_samples - self.weighted_n_left
 *         for k in range(self.n_outputs):
 *             for c in range(n_classes[k]):             # <<<<<<<<<<<<<<
 *                 sum_right[c] = sum_total[c] - sum_left[c]
 * 
 */
    __pyx_t_7 = (__pyx_v_n_classes[__pyx_v_k]);
    for (__pyx_t_8 = 0; __pyx_t_8 < __pyx_t_7; __pyx_t_8+=1) {
      __pyx_v_c = __pyx_t_8;

      /* "skgarden/mondrian/tree/_criterion.pyx":787
 *         for k in range(self.n_outputs):
 *             for c in range(n_classes[k]):
 *                 sum_right[c] = sum_total[c] - sum_left[c]             # <<<<<<<<<<<<<<
 * 
 *             sum_right += self.sum_stride
 */
      (__pyx_v_sum_right[__pyx_v_c]) = ((__pyx_v_sum_total[__pyx_v_c]) - (__pyx_v_sum_left[__pyx_v_c]));
    }

    /* "skgarden/mondrian/tree/_criterion.pyx":789
 *                 sum_right[c] = sum_total[c] - sum_left[c]
 * 
 *             sum_right += self.sum_stride             # <<<<<<<<<<<<<<
 *             sum_left += self.sum_stride
 *             sum_total += self.sum_stride
 */
    __pyx_v_sum_right = (__pyx_v_sum_right + __pyx_v_self->sum_stride);

    /* "skgarden/mondrian/tree/_criterion.pyx":790
 * 
 *             sum_right += self.sum_stride
 *             sum_left += self.sum_stride             # <<<<<<<<<<<<<<
 *             sum_total += self.sum_stride
 * 
 */
    __pyx_v_sum_left = (__pyx_v_sum_left + __pyx_v_self->sum_stride);

    /* "skgarden/mondrian/tree/_criterion.pyx":791
 *             sum_right += self.sum_stride
 *             sum_left += self.sum_stride
 *             sum_total += self.sum_stride             # <<<<<<<<<<<<<<
 * 
 *         self.pos = new_pos
 */
    __pyx_v_sum_total = (__pyx_v_sum_total + __pyx_v_self->sum_stride);
  }

  /* "skgarden/mondrian/tree/_criterion.pyx":793
 *             sum_total += self.sum_stride
 * 
 *         self.pos = new_pos             # <<<<<<<<<<<<<<
 *         return 0
 * 
 */
  __pyx_v_self->__pyx_base.pos = __pyx_v_new_pos;

  /* "skgarden/mondrian/tree/_criterion.pyx":794
 * 
 *         self.pos = new_pos
 *         return 0             # <<<<<<<<<<<<<<
 * 
 *     cdef double node_impurity(self) nogil:
 */
  __pyx_r = 0;
  goto __pyx_L0;

  /* "skgarden/mondrian/tree/_criterion.pyx":714
 *         return 0
 * 
 *     cdef int update(self, SIZE_t new_pos) nogil except -1:             # <<<<<<<<<<<<<<
 *         """Updated statistics by moving samples[pos:new_pos] to the left child.
 * 
 */

  /* function exit code */
  __pyx_L1_error:;
  {
    #ifdef WITH_THREAD
    PyGILState_STATE __pyx_gilstate_save = PyGILState_Ensure();
    #endif
    __Pyx_AddTraceback("skgarden.mondrian.tree._criterion.ClassificationCriterion.update", __pyx_clineno, __pyx_lineno, __pyx_filename);
    #ifdef WITH_THREAD
    PyGILState_Release(__pyx_gilstate_save);
    #endif
  }
  __pyx_r = -1;
  __pyx_L0:;
  return __pyx_r;
}

/* "skgarden/mondrian/tree/_criterion.pyx":796
 *         return 0
 * 
 *     cdef double node_impurity(self) nogil:             # <<<<<<<<<<<<<<
 *         return INFINITY
 * 
 */

static double __pyx_f_8skgarden_8mondrian_4tree_10_criterion_23ClassificationCriterion_node_impurity(CYTHON_UNUSED struct __pyx_obj_8skgarden_8mondrian_4tree_10_criterion_ClassificationCriterion *__pyx_v_self) {
  double __pyx_r;

  /* "skgarden/mondrian/tree/_criterion.pyx":797
 * 
 *     cdef double node_impurity(self) nogil:
 *         return INFINITY             # <<<<<<<<<<<<<<
 * 
 *     cdef void children_impurity(self, double* impurity_left,
 */
  __pyx_r = __pyx_v_8skgarden_8mondrian_4tree_10_criterion_INFINITY;
  goto __pyx_L0;

  /* "skgarden/mondrian/tree/_criterion.pyx":796
 *         return 0
 * 
 *     cdef double node_impurity(self) nogil:             # <<<<<<<<<<<<<<
 *         return INFINITY
 * 
 */

  /* function exit code */
  __pyx_L0:;
  return __pyx_r;
}

/* "skgarden/mondrian/tree/_criterion.pyx":799
 *         return INFINITY
 * 
 *     cdef void children_impurity(self, double* impurity_left,             # <<<<<<<<<<<<<<
 *                                 double* impurity_right) nogil:
 *         pass
 */

static void __pyx_f_8skgarden_8mondrian_4tree_10_criterion_23ClassificationCriterion_children_impurity(CYTHON_UNUSED struct __pyx_obj_8skgarden_8mondrian_4tree_10_criterion_ClassificationCriterion *__pyx_v_self, CYTHON_UNUSED double *__pyx_v_impurity_left, CYTHON_UNUSED double *__pyx_v_impurity_right) {

  /* function exit code */
}

/* "skgarden/mondrian/tree/_criterion.pyx":803
 *         pass
 * 
 *     cdef void node_value(self, double* dest) nogil:             # <<<<<<<<<<<<<<
 *         """Compute the node value of samples[start:end] and save it into dest.
 * 
 */

static void __pyx_f_8skgarden_8mondrian_4tree_10_criterion_23ClassificationCriterion_node_value(struct __pyx_obj_8skgarden_8mondrian_4tree_10_criterion_ClassificationCriterion *__pyx_v_self, double *__pyx_v_dest) {
  double *__pyx_v_sum_total;
  __pyx_t_8skgarden_8mondrian_4tree_10_criterion_SIZE_t *__pyx_v_n_classes;
  __pyx_t_8skgarden_8mondrian_4tree_10_criterion_SIZE_t __pyx_v_k;
  double *__pyx_t_1;
  __pyx_t_8skgarden_8mondrian_4tree_10_criterion_SIZE_t *__pyx_t_2;
  __pyx_t_8skgarden_8mondrian_4tree_10_criterion_SIZE_t __pyx_t_3;
  __pyx_t_8skgarden_8mondrian_4tree_10_criterion_SIZE_t __pyx_t_4;

  /* "skgarden/mondrian/tree/_criterion.pyx":812
 *         """
 * 
 *         cdef double* sum_total = self.sum_total             # <<<<<<<<<<<<<<
 *         cdef SIZE_t* n_classes = self.n_classes
 *         cdef SIZE_t k
 */
  __pyx_t_1 = __pyx_v_self->__pyx_base.sum_total;
  __pyx_v_sum_total = __pyx_t_1;

  /* "skgarden/mondrian/tree/_criterion.pyx":813
 * 
 *         cdef double* sum_total = self.sum_total
 *         cdef SIZE_t* n_classes = self.n_classes             # <<<<<<<<<<<<<<
 *         cdef SIZE_t k
 * 
 */
  __pyx_t_2 = __pyx_v_self->n_classes;
  __pyx_v_n_classes = __pyx_t_2;

  /* "skgarden/mondrian/tree/_criterion.pyx":816
 *         cdef SIZE_t k
 * 
 *         for k in range(self.n_outputs):             # <<<<<<<<<<<<<<
 *             memcpy(dest, sum_total, n_classes[k] * sizeof(double))
 *             dest += self.sum_stride
 */
  __pyx_t_3 = __pyx_v_self->__pyx_base.n_outputs;
  for (__pyx_t_4 = 0; __pyx_t_4 < __pyx_t_3; __pyx_t_4+=1) {
    __pyx_v_k = __pyx_t_4;

    /* "skgarden/mondrian/tree/_criterion.pyx":817
 * 
 *         for k in range(self.n_outputs):
 *             memcpy(dest, sum_total, n_classes[k] * sizeof(double))             # <<<<<<<<<<<<<<
 *             dest += self.sum_stride
 *             sum_total += self.sum_stride
 */
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  ctx->enc_packmode = '@';
  ctx->new_count = 1;
  ctx->enc_count = 0;
  ctx->enc_type = 0;
  ctx->is_complex = 0;
  ctx->is_valid_array = 0;
  ctx->struct_alignment = 0;
  while (type->typegroup == 'S') {
    ++ctx->head;
    ctx->head->field = type->fields;
    ctx->head->parent_offset = 0;
    type = type->fields->type;
  }
}
static int __Pyx_BufFmt_ParseNumber(const char** ts) {
    int count;
    const char* t = *ts;
    if (*t < '0' || *t > '9') {
      return -1;
    } else {
        count = *t++ - '0';
        while (*t >= '0' && *t < '9') {
            count *= 10;
            count += *t++ - '0';
        }
    }
    *ts = t;
    return count;
}
static int __Pyx_BufFmt_ExpectNumber(const char **ts) {
    int number = __Pyx_BufFmt_ParseNumber(ts);
    if (number == -1)
        PyErr_Format(PyExc_ValueError,\
                     "Does not understand character buffer dtype format string ('%c')", **ts);
    return number;
}
static void __Pyx_BufFmt_RaiseUnexpectedChar(char ch) {
  PyErr_Format(PyExc_ValueError,
               "Unexpected format string character: '%c'", ch);
}
static const char* __Pyx_BufFmt_DescribeTypeChar(char ch, int is_complex) {
  switch (ch) {
    case 'c': return "'char'";
    case 'b': return "'signed char'";
    case 'B': return "'unsigned char'";
    case 'h': return "'short'";
    case 'H': return "'unsigned short'";
    case 'i': return "'int'";
    case 'I': return "'unsigned int'";
    case 'l': return "'long'";
    case 'L': return "'unsigned long'";
    case 'q': return "'long long'";
    case 'Q': return "'unsigned long long'";
    case 'f': return (is_complex ? "'complex float'" : "'float'");
    case 'd': return (is_complex ? "'complex double'" : "'double'");
    case 'g': return (is_complex ? "'complex long double'" : "'long double'");
    case 'T': return "a struct";
    case 'O': return "Python object";
    case 'P': return "a pointer";
    case 's': case 'p': return "a string";
    case 0: return "end";
    default: return "unparseable format string";
  }
}
static size_t __Pyx_BufFmt_TypeCharToStandardSize(char ch, int is_complex) {
  switch (ch) {
    case '?': case 'c': case 'b': case 'B': case 's': case 'p': return 1;
    case 'h': case 'H': return 2;
    case 'i': case 'I': case 'l': case 'L': return 4;
    case 'q': case 'Q': return 8;
    case 'f': return (is_complex ? 8 : 4);
    case 'd': return (is_complex ? 16 : 8);
    case 'g': {
      PyErr_SetString(PyExc_ValueError, "Python does not define a standard format string size for long double ('g')..");
      return 0;
    }
    case 'O': case 'P': return sizeof(void*);
    default:
      __Pyx_BufFmt_RaiseUnexpectedChar(ch);
      return 0;
    }
}
static size_t __Pyx_BufFmt_TypeCharToNativeSize(char ch, int is_complex) {
  switch (ch) {
    case 'c': case 'b': case 'B': case 's': case 'p': return 1;
    case 'h': case 'H': return sizeof(short);
    case 'i': case 'I': return sizeof(int);
    case 'l': case 'L': return sizeof(long);
    #ifdef HAVE_LONG_LONG
    case 'q': case 'Q': return sizeof(PY_LONG_LONG);
    #endif
    case 'f': return sizeof(float) * (is_complex ? 2 : 1);
    case 'd': return sizeof(double) * (is_complex ? 2 : 1);
    case 'g': return sizeof(long double) * (is_complex ? 2 : 1);
    case 'O': case 'P': return sizeof(void*);
    default: {
      __Pyx_BufFmt_RaiseUnexpectedChar(ch);
      return 0;
    }
  }
}
typedef struct { char c; short x; } __Pyx_st_short;
typedef struct { char c; int x; } __Pyx_st_int;
typedef struct { char c; long x; } __Pyx_st_long;
typedef struct { char c; float x; } __Pyx_st_float;
typedef struct { char c; double x; } __Pyx_st_double;
typedef struct { char c; long double x; } __Pyx_st_longdouble;
typedef struct { char c; void *x; } __Pyx_st_void_p;
#ifdef HAVE_LONG_LONG
typedef struct { char c; PY_LONG_LONG x; } __Pyx_st_longlong;
#endif
static size_t __Pyx_BufFmt_TypeCharToAlignment(char ch, CYTHON_UNUSED int is_complex) {
  switch (ch) {
    case '?': case 'c': case 'b': case 'B': case 's': case 'p': return 1;
    case 'h': case 'H': return sizeof(__Pyx_st_short) - sizeof(short);
    case 'i': case 'I': return sizeof(__Pyx_st_int) - sizeof(int);
    case 'l': case 'L': return sizeof(__Pyx_st_long) - sizeof(long);
#ifdef HAVE_LONG_LONG
    case 'q': case 'Q': return sizeof(__Pyx_st_longlong) - sizeof(PY_LONG_LONG);
#endif
    case 'f': return sizeof(__Pyx_st_float) - sizeof(float);
    case 'd': return sizeof(__Pyx_st_double) - sizeof(double);
    case 'g': return sizeof(__Pyx_st_longdouble) - sizeof(long double);
    case 'P': case 'O': return sizeof(__Pyx_st_void_p) - sizeof(void*);
    default:
      __Pyx_BufFmt_RaiseUnexpectedChar(ch);
      return 0;
    }
}
/* These are for computing the padding at the end of the struct to align
   on the first member of the struct. This will probably the same as above,
   but we don't have any guarantees.
 */
typedef struct { short x; char c; } __Pyx_pad_short;
typedef struct { int x; char c; } __Pyx_pad_int;
typedef struct { long x; char c; } __Pyx_pad_long;
typedef struct { float x; char c; } __Pyx_pad_float;
typedef struct { double x; char c; } __Pyx_pad_double;
typedef struct { long double x; char c; } __Pyx_pad_longdouble;
typedef struct { void *x; char c; } __Pyx_pad_void_p;
#ifdef HAVE_LONG_LONG
typedef struct { PY_LONG_LONG x; char c; } __Pyx_pad_longlong;
#endif
static size_t __Pyx_BufFmt_TypeCharToPadding(char ch, CYTHON_UNUSED int is_complex) {
  switch (ch) {
    case '?': case 'c': case 'b': case 'B': case 's': case 'p': return 1;
    case 'h': case 'H': return sizeof(__Pyx_pad_short) - sizeof(short);
    case 'i': case 'I': return sizeof(__Pyx_pad_int) - sizeof(int);
    case 'l': case 'L': return sizeof(__Pyx_pad_long) - sizeof(long);
#ifdef HAVE_LONG_LONG
    case 'q': case 'Q': return sizeof(__Pyx_pad_longlong) - sizeof(PY_LONG_LONG);
#endif
    case 'f': return sizeof(__Pyx_pad_float) - sizeof(float);
    case 'd': return sizeof(__Pyx_pad_double) - sizeof(double);
    case 'g': return sizeof(__Pyx_pad_longdouble) - sizeof(long double);
    case 'P': case 'O': return sizeof(__Pyx_pad_void_p) - sizeof(void*);
    default:
      __Pyx_BufFmt_RaiseUnexpectedChar(ch);
      return 0;
    }
}
static char __Pyx_BufFmt_TypeCharToGroup(char ch, int is_complex) {
  switch (ch) {
    case 'c':
        return 'H';
    case 'b': case 'h': case 'i':
    case 'l': case 'q': case 's': case 'p':
        return 'I';
    case 'B': case 'H': case 'I': case 'L': case 'Q':
        return 'U';
    case 'f': case 'd': case 'g':
        return (is_complex ? 'C' : 'R');
    case 'O':
        return 'O';
    case 'P':
        return 'P';
    default: {
      __Pyx_BufFmt_RaiseUnexpectedChar(ch);
      return 0;
    }
  }
}
static void __Pyx_BufFmt_RaiseExpected(__Pyx_BufFmt_Context* ctx) {
  if (ctx->head == NULL || ctx->head->field == &ctx->root) {
    const char* expected;
    const char* quote;
    if (ctx->head == NULL) {
      expected = "end";
      quote = "";
    } else {
      expected = ctx->head->field->type->name;
      quote = "'";
    }
    PyErr_Format(PyExc_ValueError,
                 "Buffer dtype mismatch, expected %s%s%s but got %s",
                 quote, expected, quote,
                 __Pyx_BufFmt_DescribeTypeChar(ctx->enc_type, ctx->is_complex));
  } else {
    __Pyx_StructField* field = ctx->head->field;
    __Pyx_StructField* parent = (ctx->head - 1)->field;
    PyErr_Format(PyExc_ValueError,
                 "Buffer dtype mismatch, expected '%s' but got %s in '%s.%s'",
                 field->type->name, __Pyx_BufFmt_DescribeTypeChar(ctx->enc_type, ctx->is_complex),
                 parent->type->name, field->name);
  }
}
static int __Pyx_BufFmt_ProcessTypeChunk(__Pyx_BufFmt_Context* ctx) {
  char group;
  size_t size, offset, arraysize = 1;
  if (ctx->enc_type == 0) return 0;
  if (ctx->head->field->type->arraysize[0]) {
    int i, ndim = 0;
    if (ctx->enc_type == 's' || ctx->enc_type == 'p') {
        ctx->is_valid_array = ctx->head->field->type->ndim == 1;
        ndim = 1;
        if (ctx->enc_count != ctx->head->field->type->arraysize[0]) {
            PyErr_Format(PyExc_ValueError,
                         "Expected a dimension of size %zu, got %zu",
                         ctx->head->field->type->arraysize[0], ctx->enc_count);
            return -1;
        }
    }
    if (!ctx->is_valid_array) {
      PyErr_Format(PyExc_ValueError, "Expected %d dimensions, got %d",
                   ctx->head->field->type->ndim, ndim);
      return -1;
    }
    for (i = 0; i < ctx->head->field->type->ndim; i++) {
      arraysize *= ctx->head->field->type->arraysize[i];
    }
    ctx->is_valid_array = 0;
    ctx->enc_count = 1;
  }
  group = __Pyx_BufFmt_TypeCharToGroup(ctx->enc_type, ctx->is_complex);
  do {
    __Pyx_StructField* field = ctx->head->field;
    __Pyx_TypeInfo* type = field->type;
    if (ctx->enc_packmode == '@' || ctx->enc_packmode == '^') {
      size = __Pyx_BufFmt_TypeCharToNativeSize(ctx->enc_type, ctx->is_complex);
    } else {
      size = __Pyx_BufFmt_TypeCharToStandardSize(ctx->enc_type, ctx->is_complex);
    }
    if (ctx->enc_packmode == '@') {
      size_t align_at = __Pyx_BufFmt_TypeCharToAlignment(ctx->enc_type, ctx->is_complex);
      size_t align_mod_offset;
      if (align_at == 0) return -1;
      align_mod_offset = ctx->fmt_offset % align_at;
      if (align_mod_offset > 0) ctx->fmt_offset += align_at - align_mod_offset;
      if (ctx->struct_alignment == 0)
          ctx->struct_alignment = __Pyx_BufFmt_TypeCharToPadding(ctx->enc_type,
                                                                 ctx->is_complex);
    }
    if (type->size != size || type->typegroup != group) {
      if (type->typegroup == 'C' && type->fields != NULL) {
        size_t parent_offset = ctx->head->parent_offset + field->offset;
        ++ctx->head;
        ctx->head->field = type->fields;
        ctx->head->parent_offset = parent_offset;
        continue;
      }
      if ((type->typegroup == 'H' || group == 'H') && type->size == size) {
      } else {
          __Pyx_BufFmt_RaiseExpected(ctx);
          return -1;
      }
    }
    offset = ctx->head->parent_offset + field->offset;
    if (ctx->fmt_offset != offset) {
      PyErr_Format(PyExc_ValueError,
                   "Buffer dtype mismatch; next field is at offset %" CYTHON_FORMAT_SSIZE_T "d but %" CYTHON_FORMAT_SSIZE_T "d expected",
                   (Py_ssize_t)ctx->fmt_offset, (Py_ssize_t)offset);
      return -1;
    }
    ctx->fmt_offset += size;
    if (arraysize)
      ctx->fmt_offset += (arraysize - 1) * size;
    --ctx->enc_count;
    while (1) {
      if (field == &ctx->root) {
        ctx->head = NULL;
        if (ctx->enc_count != 0) {
          __Pyx_BufFmt_RaiseExpected(ctx);
          return -1;
        }
        break;
      }
      ctx->head->field = ++field;
      if (field->type == NULL) {
        --ctx->head;
        field = ctx->head->field;
        continue;
      } else if (field->type->typegroup == 'S') {
        size_t parent_offset = ctx->head->parent_offset + field->offset;
        if (field->type->fields->type == NULL) continue;
        field = field->type->fields;
        ++ctx->head;
        ctx->head->field = field;
        ctx->head->parent_offset = parent_offset;
        break;
      } else {
        break;
      }
    }
  } while (ctx->enc_count);
  ctx->enc_type = 0;
  ctx->is_complex = 0;
  return 0;
}
static CYTHON_INLINE PyObject *
__pyx_buffmt_parse_array(__Pyx_BufFmt_Context* ctx, const char** tsp)
{
    const char *ts = *tsp;
    int i = 0, number;
    int ndim = ctx->head->field->type->ndim;
;
    ++ts;
    if (ctx->new_count != 1) {
        PyErr_SetString(PyExc_ValueError,
                        "Cannot handle repeated arrays in format string");
        return NULL;
    }
    if (__Pyx_BufFmt_ProcessTypeChunk(ctx) == -1) return NULL;
    while (*ts && *ts != ')') {
        switch (*ts) {
            case ' ': case '\f': case '\r': case '\n': case '\t': case '\v':  continue;
            default:  break;
        }
        number = __Pyx_BufFmt_ExpectNumber(&ts);
        if (number == -1) return NULL;
        if (i < ndim && (size_t) number != ctx->head->field->type->arraysize[i])
            return PyErr_Format(PyExc_ValueError,
                        "Expected a dimension of size %zu, got %d",
                        ctx->head->field->type->arraysize[i], number);
        if (*ts != ',' && *ts != ')')
            return PyErr_Format(PyExc_ValueError,
                                "Expected a comma in format string, got '%c'", *ts);
        if (*ts == ',') ts++;
        i++;
    }
    if (i != ndim)
        return PyErr_Format(PyExc_ValueError, "Expected %d dimension(s), got %d",
                            ctx->head->field->type->ndim, i);
    if (!*ts) {
        PyErr_SetString(PyExc_ValueError,
                        "Unexpected end of format string, expected ')'");
        return NULL;
    }
    ctx->is_valid_array = 1;
    ctx->new_count = 1;
    *tsp = ++ts;
    return Py_None;
}
static const char* __Pyx_BufFmt_CheckString(__Pyx_BufFmt_Context* ctx, const char* ts) {
  int got_Z = 0;
  while (1) {
    switch(*ts) {
      case 0:
        if (ctx->enc_type != 0 && ctx->head == NULL) {
          __Pyx_BufFmt_RaiseExpected(ctx);
          return NULL;
        }
        if (__Pyx_BufFmt_ProcessTypeChunk(ctx) == -1) return NULL;
        if (ctx->head != NULL) {
          __Pyx_BufFmt_RaiseExpected(ctx);
          return NULL;
        }
        return ts;
      case ' ':
      case '\r':
      case '\n':
        ++ts;
        break;
      case '<':
        if (!__Pyx_IsLittleEndian()) {
          PyErr_SetString(PyExc_ValueError, "Little-endian buffer not supported on big-endian compiler");
          return NULL;
        }
        ctx->new_packmode = '=';
        ++ts;
        break;
      case '>':
      case '!':
        if (__Pyx_IsLittleEndian()) {
          PyErr_SetString(PyExc_ValueError, "Big-endian buffer not supported on little-endian compiler");
          return NULL;
        }
        ctx->new_packmode = '=';
        ++ts;
        break;
      case '=':
      case '@':
      case '^':
        ctx->new_packmode = *ts++;
        break;
      case 'T':
        {
          const char* ts_after_sub;
          size_t i, struct_count = ctx->new_count;
          size_t struct_alignment = ctx->struct_alignment;
          ctx->new_count = 1;
          ++ts;
          if (*ts != '{') {
            PyErr_SetString(PyExc_ValueError, "Buffer acquisition: Expected '{' after 'T'");
            return NULL;
          }
          if (__Pyx_BufFmt_ProcessTypeChunk(ctx) == -1) return NULL;
          ctx->enc_type = 0;
          ctx->enc_count = 0;
          ctx->struct_alignment = 0;
          ++ts;
          ts_after_sub = ts;
          for (i = 0; i != struct_count; ++i) {
            ts_after_sub = __Pyx_BufFmt_CheckString(ctx, ts);
            if (!ts_after_sub) return NULL;
          }
          ts = ts_after_sub;
          if (struct_alignment) ctx->struct_alignment = struct_alignment;
        }
        break;
      case '}':
        {
          size_t alignment = ctx->struct_alignment;
          ++ts;
          if (__Pyx_BufFmt_ProcessTypeChunk(ctx) == -1) return NULL;
          ctx->enc_type = 0;
          if (alignment && ctx->fmt_offset % alignment) {
            ctx->fmt_offset += alignment - (ctx->fmt_offset % alignment);
          }
        }
        return ts;
      case 'x':
        if (__Pyx_BufFmt_ProcessTypeChunk(ctx) == -1) return NULL;
        ctx->fmt_offset += ctx->new_count;
        ctx->new_count = 1;
        ctx->enc_count = 0;
        ctx->enc_type = 0;
        ctx->enc_packmode = ctx->new_packmode;
        ++ts;
        break;
      case 'Z':
        got_Z = 1;
        ++ts;
        if (*ts != 'f' && *ts != 'd' && *ts != 'g') {
          __Pyx_BufFmt_RaiseUnexpectedChar('Z');
          return NULL;
        }
      case 'c': case 'b': case 'B': case 'h': case 'H': case 'i': case 'I':
      case 'l': case 'L': case 'q': case 'Q':
      case 'f': case 'd': case 'g':
      case 'O': case 'p':
        if (ctx->enc_type == *ts && got_Z == ctx->is_complex &&
            ctx->enc_packmode == ctx->new_packmode) {
          ctx->enc_count += ctx->new_count;
          ctx->new_count = 1;
          got_Z = 0;
          ++ts;
          break;
        }
      case 's':
        if (__Pyx_BufFmt_ProcessTypeChunk(ctx) == -1) return NULL;
        ctx->enc_count = ctx->new_count;
        ctx->enc_packmode = ctx->new_packmode;
        ctx->enc_type = *ts;
        ctx->is_complex = got_Z;
        ++ts;
        ctx->new_count = 1;
        got_Z = 0;
        break;
      case ':':
        ++ts;
        while(*ts != ':') ++ts;
        ++ts;
        break;
      case '(':
        if (!__pyx_buffmt_parse_array(ctx, &ts)) return NULL;
        break;
      default:
        {
          int number = __Pyx_BufFmt_ExpectNumber(&ts);
          if (number == -1) return NULL;
          ctx->new_count = (size_t)number;
        }
    }
  }
}
static CYTHON_INLINE void __Pyx_ZeroBuffer(Py_buffer* buf) {
  buf->buf = NULL;
  buf->obj = NULL;
  buf->strides = __Pyx_zeros;
  buf->shape = __Pyx_zeros;
  buf->suboffsets = __Pyx_minusones;
}
static CYTHON_INLINE int __Pyx_GetBufferAndValidate(
        Py_buffer* buf, PyObject* obj,  __Pyx_TypeInfo* dtype, int flags,
        int nd, int cast, __Pyx_BufFmt_StackElem* stack)
{
  if (obj == Py_None || obj == NULL) {
    __Pyx_ZeroBuffer(buf);
    return 0;
  }
  buf->buf = NULL;
  if (__Pyx_GetBuffer(obj, buf, flags) == -1) goto fail;
  if (buf->ndim != nd) {
    PyErr_Format(PyExc_ValueError,
                 "Buffer has wrong number of dimensions (expected %d, got %d)",
                 nd, buf->ndim);
    goto fail;
  }
  if (!cast) {
    __Pyx_BufFmt_Context ctx;
    __Pyx_BufFmt_Init(&ctx, stack, dtype);
    if (!__Pyx_BufFmt_CheckString(&ctx, buf->format)) goto fail;
  }
  if ((unsigned)buf->itemsize != dtype->size) {
    PyErr_Format(PyExc_ValueError,
      "Item size of buffer (%" CYTHON_FORMAT_SSIZE_T "d byte%s) does not match size of '%s' (%" CYTHON_FORMAT_SSIZE_T "d byte%s)",
      buf->itemsize, (buf->itemsize > 1) ? "s" : "",
      dtype->name, (Py_ssize_t)dtype->size, (dtype->size > 1) ? "s" : "");
    goto fail;
  }
  if (buf->suboffsets == NULL) buf->suboffsets = __Pyx_minusones;
  return 0;
fail:;
  __Pyx_ZeroBuffer(buf);
  return -1;
}
static CYTHON_INLINE void __Pyx_SafeReleaseBuffer(Py_buffer* info) {
  if (info->buf == NULL) return;
  if (info->suboffsets == __Pyx_minusones) info->suboffsets = NULL;
  __Pyx_ReleaseBuffer(info);
}

/* PyErrFetchRestore */
      #if CYTHON_FAST_THREAD_STATE
static CYTHON_INLINE void __Pyx_ErrRestoreInState(PyThreadState *tstate, PyObject *type, PyObject *value, PyObject *tb) {
    PyObject *tmp_type, *tmp_value, *tmp_tb;
    tmp_type = tstate->curexc_type;
    tmp_value = tstate->curexc_value;
    tmp_tb = tstate->curexc_traceback;
    tstate->curexc_type = type;
    tstate->curexc_value = value;
    tstate->curexc_traceback = tb;
    Py_XDECREF(tmp_type);
    Py_XDECREF(tmp_value);
    Py_XDECREF(tmp_tb);
}
static CYTHON_INLINE void __Pyx_ErrFetchInState(PyThreadState *tstate, PyObject **type, PyObject **value, PyObject **tb) {
    *type = tstate->curexc_type;
    *value = tstate->curexc_value;
    *tb = tstate->curexc_traceback;
    tstate->curexc_type = 0;
    tstate->curexc_value = 0;
    tstate->curexc_traceback = 0;
}
#endif

/* RaiseException */
      #if PY_MAJOR_VERSION < 3
static void __Pyx_Raise(PyObject *type, PyObject *value, PyObject *tb,
                        CYTHON_UNUSED PyObject *cause) {
    __Pyx_PyThreadState_declare
    Py_XINCREF(type);
    if (!value || value == Py_None)
        value = NULL;
    else
        Py_INCREF(value);
    if (!tb || tb == Py_None)
        tb = NULL;
    else {
        Py_INCREF(tb);
        if (!PyTraceBack_Check(tb)) {
            PyErr_SetString(PyExc_TypeError,
                "raise: arg 3 must be a traceback or None");
            goto raise_error;
        }
    }
    if (PyType_Check(type)) {
#if CYTHON_COMPILING_IN_PYPY
        if (!value) {
            Py_INCREF(Py_None);
            value = Py_None;
        }
#endif
        PyErr_NormalizeException(&type, &value, &tb);
    } else {
        if (value) {
            PyErr_SetString(PyExc_TypeError,
                "instance exception may not have a separate value");
            goto raise_error;
        }
        value = type;
        type = (PyObject*) Py_TYPE(type);
        Py_INCREF(type);
        if (!PyType_IsSubtype((PyTypeObject *)type, (PyTypeObject *)PyExc_BaseException)) {
            PyErr_SetString(PyExc_TypeError,
                "raise: exception class must be a subclass of BaseException");
            goto raise_error;
        }
    }
    __Pyx_PyThreadState_assign
    __Pyx_ErrRestore(type, value, tb);
    return;
raise_error:
    Py_XDECREF(value);
    Py_XDECREF(type);
    Py_XDECREF(tb);
    return;
}
#else
static void __Pyx_Raise(PyObject *type, PyObject *value, PyObject *tb, PyObject *cause) {
    PyObject* owned_instance = NULL;
    if (tb == Py_None) {
        tb = 0;
    } else if (tb && !PyTraceBack_Check(tb)) {
        PyErr_SetString(PyExc_TypeError,
            "raise: arg 3 must be a traceback or None");
        goto bad;
    }
    if (value == Py_None)
        value = 0;
    if (PyExceptionInstance_Check(type)) {
        if (value) {
            PyErr_SetString(PyExc_TypeError,
                "instance exception may not have a separate value");
            goto bad;
        }
        value = type;
        type = (PyObject*) Py_TYPE(value);
    } else if (PyExceptionClass_Check(type)) {
        PyObject *instance_class = NULL;
        if (value && PyExceptionInstance_Check(value)) {
            instance_class = (PyObject*) Py_TYPE(value);
            if (instance_class != type) {
                int is_subclass = PyObject_IsSubclass(instance_class, type);
                if (!is_subclass) {
                    instance_class = NULL;
                } else if (unlikely(is_subclass == -1)) {
                    goto bad;
                } else {
                    type = instance_class;
                }
            }
        }
        if (!instance_class) {
            PyObject *args;
            if (!value)
                args = PyTuple_New(0);
            else if (PyTuple_Check(value)) {
                Py_INCREF(value);
                args = value;
            } else
                args = PyTuple_Pack(1, value);
            if (!args)
                goto bad;
            owned_instance = PyObject_Call(type, args, NULL);
            Py_DECREF(args);
            if (!owned_instance)
                goto bad;
            value = owned_instance;
            if (!PyExceptionInstance_Check(value)) {
                PyErr_Format(PyExc_TypeError,
                             "calling %R should have returned an instance of "
                             "BaseException, not %R",
                             type, Py_TYPE(value));
                goto bad;
            }
        }
    } else {
        PyErr_SetString(PyExc_TypeError,
            "raise: exception class must be a subclass of BaseException");
        goto bad;
    }
#if PY_VERSION_HEX >= 0x03030000
    if (cause) {
#else
    if (cause && cause != Py_None) {
#endif
        PyObject *fixed_cause;
        if (cause == Py_None) {
            fixed_cause = NULL;
        } else if (PyExceptionClass_Check(cause)) {
            fixed_cause = PyObject_CallObject(cause, NULL);
            if (fixed_cause == NULL)
                goto bad;
        } else if (PyExceptionInstance_Check(cause)) {
            fixed_cause = cause;
            Py_INCREF(fixed_cause);
        } else {
            PyErr_SetString(PyExc_TypeError,
                            "exception causes must derive from "
                            "BaseException");
            goto bad;
        }
        PyException_SetCause(value, fixed_cause);
    }
    PyErr_SetObject(type, value);
    if (tb) {
#if CYTHON_COMPILING_IN_PYPY
        PyObject *tmp_type, *tmp_value, *tmp_tb;
        PyErr_Fetch(&tmp_type, &tmp_value, &tmp_tb);
        Py_INCREF(tb);
        PyErr_Restore(tmp_type, tmp_value, tb);
        Py_XDECREF(tmp_tb);
#else
        PyThreadState *tstate = PyThreadState_GET();
        PyObject* tmp_tb = tstate->curexc_traceback;
        if (tb != tmp_tb) {
            Py_INCREF(tb);
            tstate->curexc_traceback = tb;
            Py_XDECREF(tmp_tb);
        }
#endif
    }
bad:
    Py_XDECREF(owned_instance);
    return;
}
#endif

/* RaiseTooManyValuesToUnpack */
        static CYTHON_INLINE void __Pyx_RaiseTooManyValuesError(Py_ssize_t expected) {
    PyErr_Format(PyExc_ValueError,
                 "too many values to unpack (expected %" CYTHON_FORMAT_SSIZE_T "d)", expected);
}

/* RaiseNeedMoreValuesToUnpack */
        static CYTHON_INLINE void __Pyx_RaiseNeedMoreValuesError(Py_ssize_t index) {
    PyErr_Format(PyExc_ValueError,
                 "need more than %" CYTHON_FORMAT_SSIZE_T "d value%.1s to unpack",
                 index, (index == 1) ? "" : "s");
}

/* RaiseNoneIterError */
        static CYTHON_INLINE void __Pyx_RaiseNoneNotIterableError(void) {
    PyErr_SetString(PyExc_TypeError, "'NoneType' object is not iterable");
}

/* ExtTypeTest */
        static CYTHON_INLINE int __Pyx_TypeTest(PyObject *obj, PyTypeObject *type) {
    if (unlikely(!type)) {
        PyErr_SetString(PyExc_SystemError, "Missing type object");
        return 0;
    }
    if (likely(PyObject_TypeCheck(obj, type)))
        return 1;
    PyErr_Format(PyExc_TypeError, "Cannot convert %.200s to %.200s",
                 Py_TYPE(obj)->tp_name, type->tp_name);
    return 0;
}

/* SaveResetException */
        #if CYTHON_FAST_THREAD_STATE
static CYTHON_INLINE void __Pyx__ExceptionSave(PyThreadState *tstate, PyObject **type, PyObject **value, PyObject **tb) {
    *type = tstate->exc_type;
    *value = tstate->exc_value;
    *tb = tstate->exc_traceback;
    Py_XINCREF(*type);
    Py_XINCREF(*value);
    Py_XINCREF(*tb);
}
static CYTHON_INLINE void __Pyx__ExceptionReset(PyThreadState *tstate, PyObject *type, PyObject *value, PyObject *tb) {
    PyObject *tmp_type, *tmp_value, *tmp_tb;
    tmp_type = tstate->exc_type;
    tmp_value = tstate->exc_value;
    tmp_tb = tstate->exc_traceback;
    tstate->exc_type = type;
    tstate->exc_value = value;
    tstate->exc_traceback = tb;
    Py_XDECREF(tmp_type);
    Py_XDECREF(tmp_value);
    Py_XDECREF(tmp_tb);
}
#endif

/* PyErrExceptionMatches */
        #if CYTHON_FAST_THREAD_STATE
static CYTHON_INLINE int __Pyx_PyErr_ExceptionMatchesInState(PyThreadState* tstate, PyObject* err) {
    PyObject *exc_type = tstate->curexc_type;
    if (exc_type == err) return 1;
    if (unlikely(!exc_type)) return 0;
    return PyErr_GivenExceptionMatches(exc_type, err);
}
#endif

/* GetException */
        #if CYTHON_FAST_THREAD_STATE
static int __Pyx__GetException(PyThreadState *tstate, PyObject **type, PyObject **value, PyObject **tb) {
#else
static int __Pyx_GetException(PyObject **type, PyObject **value, PyObject **tb) {
#endif
    PyObject *local_type, *local_value, *local_tb;
#if CYTHON_FAST_THREAD_STATE
    PyObject *tmp_type, *tmp_value, *tmp_tb;
    local_type = tstate->curexc_type;
    local_value = tstate->curexc_value;
    local_tb = tstate->curexc_traceback;
    tstate->curexc_type = 0;
    tstate->curexc_value = 0;
    tstate->curexc_traceback = 0;
#else
    PyErr_Fetch(&local_type, &local_value, &local_tb);
#endif
    PyErr_NormalizeException(&local_type, &local_value, &local_tb);
#if CYTHON_FAST_THREAD_STATE
    if (unlikely(tstate->curexc_type))
#else
    if (unlikely(PyErr_Occurred()))
#endif
        goto bad;
    #if PY_MAJOR_VERSION >= 3
    if (local_tb) {
        if (unlikely(PyException_SetTraceback(local_value, local_tb) < 0))
            goto bad;
    }
    #endif
    Py_XINCREF(local_tb);
    Py_XINCREF(local_type);
    Py_XINCREF(local_value);
    *type = local_type;
    *value = local_value;
    *tb = local_tb;
#if CYTHON_FAST_THREAD_STATE
    tmp_type = tstate->exc_type;
    tmp_value = tstate->exc_value;
    tmp_tb = tstate->exc_traceback;
    tstate->exc_type = local_type;
    tstate->exc_value = local_value;
    tstate->exc_traceback = local_tb;
    Py_XDECREF(tmp_type);
    Py_XDECREF(tmp_value);
    Py_XDECREF(tmp_tb);
#else
    PyErr_SetExcInfo(local_type, local_value, local_tb);
#endif
    return 0;
bad:
    *type = 0;
    *value = 0;
    *tb = 0;
    Py_XDECREF(local_type);
    Py_XDECREF(local_value);
    Py_XDECREF(local_tb);
    return -1;
}

/* SetVTable */
          static int __Pyx_SetVtable(PyObject *dict, void *vtable) {
#if PY_VERSION_HEX >= 0x02070000
    PyObject *ob = PyCapsule_New(vtable, 0, 0);
#else
    PyObject *ob = PyCObject_FromVoidPtr(vtable, 0);
#endif
    if (!ob)
        goto bad;
    if (PyDict_SetItem(dict, __pyx_n_s_pyx_vtable, ob) < 0)
        goto bad;
    Py_DECREF(ob);
    return 0;
bad:
    Py_XDECREF(ob);
    return -1;
}

/* GetVTable */
          static void* __Pyx_GetVtable(PyObject *dict) {
    void* ptr;
    PyObject *ob = PyObject_GetItem(dict, __pyx_n_s_pyx_vtable);
    if (!ob)
        goto bad;
#if PY_VERSION_HEX >= 0x02070000
    ptr = PyCapsule_GetPointer(ob, 0);
#else
    ptr = PyCObject_AsVoidPtr(ob);
#endif
    if (!ptr && !PyErr_Occurred())
        PyErr_SetString(PyExc_RuntimeError, "invalid vtable found for imported type");
    Py_DECREF(ob);
    return ptr;
bad:
    Py_XDECREF(ob);
    return NULL;
}

/* Import */
          static PyObject *__Pyx_Import(PyObject *name, PyObject *from_list, int level) {
    PyObject *empty_list = 0;
    PyObject *module = 0;
    PyObject *global_dict = 0;
    PyObject *empty_dict = 0;
    PyObject *list;
    #if PY_VERSION_HEX < 0x03030000
    PyObject *py_import;
    py_import = __Pyx_PyObject_GetAttrStr(__pyx_b, __pyx_n_s_import);
    if (!py_import)
        goto bad;
    #endif
    if (from_list)
        list = from_list;
    else {
        empty_list = PyList_New(0);
        if (!empty_list)
            goto bad;
        list = empty_list;
    }
    global_dict = PyModule_GetDict(__pyx_m);
    if (!global_dict)
        goto bad;
    empty_dict = PyDict_New();
    if (!empty_dict)
        goto bad;
    {
        #if PY_MAJOR_VERSION >= 3
        if (level == -1) {
            if (strchr(__Pyx_MODULE_NAME, '.')) {
                #if PY_VERSION_HEX < 0x03030000
                PyObject *py_level = PyInt_FromLong(1);
                if (!py_level)
                    goto bad;
                module = PyObject_CallFunctionObjArgs(py_import,
                    name, global_dict, empty_dict, list, py_level, NULL);
                Py_DECREF(py_level);
                #else
                module = PyImport_ImportModuleLevelObject(
                    name, global_dict, empty_dict, list, 1);
                #endif
                if (!module) {
                    if (!PyErr_ExceptionMatches(PyExc_ImportError))
                        goto bad;
                    PyErr_Clear();
                }
            }
            level = 0;
        }
        #endif
        if (!module) {
            #if PY_VERSION_HEX < 0x03030000
            PyObject *py_level = PyInt_FromLong(level);
            if (!py_level)
                goto bad;
            module = PyObject_CallFunctionObjArgs(py_import,
                name, global_dict, empty_dict, list, py_level, NULL);
            Py_DECREF(py_level);
            #else
            module = PyImport_ImportModuleLevelObject(
                name, global_dict, empty_dict, list, level);
            #endif
        }
    }
bad:
    #if PY_VERSION_HEX < 0x03030000
    Py_XDECREF(py_import);
    #endif
    Py_XDECREF(empty_list);
    Py_XDECREF(empty_dict);
    return module;
}

/* GetModuleGlobalName */
          static CYTHON_INLINE PyObject *__Pyx_GetModuleGlobalName(PyObject *name) {
    PyObject *result;
#if !CYTHON_AVOID_BORROWED_REFS
    result = PyDict_GetItem(__pyx_d, name);
    if (likely(result)) {
        Py_INCREF(result);
    } else {
#else
    result = PyObject_GetItem(__pyx_d, name);
    if (!result) {
        PyErr_Clear();
#endif
        result = __Pyx_GetBuiltinName(name);
    }
    return result;
}

/* CodeObjectCache */
            static int __pyx_bisect_code_objects(__Pyx_CodeObjectCacheEntry* entries, int count, int code_line) {
    int start = 0, mid = 0, end = count - 1;
    if (end >= 0 && code_line > entries[end].code_line) {
        return count;
    }
    while (start < end) {
        mid = start + (end - start) / 2;
        if (code_line < entries[mid].code_line) {
            end = mid;
        } else if (code_line > entries[mid].code_line) {
             start = mid + 1;
        } else {
            return mid;
        }
    }
    if (code_line <= entries[mid].code_line) {
        return mid;
    } else {
        return mid + 1;
    }
}
static PyCodeObject *__pyx_find_code_object(int code_line) {
    PyCodeObject* code_object;
    int pos;
    if (unlikely(!code_line) || unlikely(!__pyx_code_cache.entries)) {
        return NULL;
    }
    pos = __pyx_bisect_code_objects(__pyx_code_cache.entries, __pyx_code_cache.count, code_line);
    if (unlikely(pos >= __pyx_code_cache.count) || unlikely(__pyx_code_cache.entries[pos].code_line != code_line)) {
        return NULL;
    }
    code_object = __pyx_code_cache.entries[pos].code_object;
    Py_INCREF(code_object);
    return code_object;
}
static void __pyx_insert_code_object(int code_line, PyCodeObject* code_object) {
    int pos, i;
    __Pyx_CodeObjectCacheEntry* entries = __pyx_code_cache.entries;
    if (unlikely(!code_line)) {
        return;
    }
    if (unlikely(!entries)) {
        entries = (__Pyx_CodeObjectCacheEntry*)PyMem_Malloc(64*sizeof(__Pyx_CodeObjectCacheEntry));
        if (likely(entries)) {
            __pyx_code_cache.entries = entries;
            __pyx_code_cache.max_count = 64;
            __pyx_code_cache.count = 1;
            entries[0].code_line = code_line;
            entries[0].code_object = code_object;
            Py_INCREF(code_object);
        }
        return;
    }
    pos = __pyx_bisect_code_objects(__pyx_code_cache.entries, __pyx_code_cache.count, code_line);
    if ((pos < __pyx_code_cache.count) && unlikely(__pyx_code_cache.entries[pos].code_line == code_line)) {
        PyCodeObject* tmp = entries[pos].code_object;
        entries[pos].code_object = code_object;
        Py_DECREF(tmp);
        return;
    }
    if (__pyx_code_cache.count == __pyx_code_cache.max_count) {
        int new_max = __pyx_code_cache.max_count + 64;
        entries = (__Pyx_CodeObjectCacheEntry*)PyMem_Realloc(
            __pyx_code_cache.entries, (size_t)new_max*sizeof(__Pyx_CodeObjectCacheEntry));
        if (unlikely(!entries)) {
            return;
        }
        __pyx_code_cache.entries = entries;
        __pyx_code_cache.max_count = new_max;
    }
    for (i=__pyx_code_cache.count; i>pos; i--) {
        entries[i] = entries[i-1];
    }
    entries[pos].code_line = code_line;
    entries[pos].code_object = code_object;
    __pyx_code_cache.count++;
    Py_INCREF(code_object);
}

/* AddTraceback */
            #include "compile.h"
#include "frameobject.h"
#include "traceback.h"
static PyCodeObject* __Pyx_CreateCodeObjectForTraceback(
            const char *funcname, int c_line,
            int py_line, const char *filename) {
    PyCodeObject *py_code = 0;
    PyObject *py_srcfile = 0;
    PyObject *py_funcname = 0;
    #if PY_MAJOR_VERSION < 3
    py_srcfile = PyString_FromString(filename);
    #else
    py_srcfile = PyUnicode_FromString(filename);
    #endif
    if (!py_srcfile) goto bad;
    if (c_line) {
        #if PY_MAJOR_VERSION < 3
        py_funcname = PyString_FromFormat( "%s (%s:%d)", funcname, __pyx_cfilenm, c_line);
        #else
        py_funcname = PyUnicode_FromFormat( "%s (%s:%d)", funcname, __pyx_cfilenm, c_line);
        #endif
    }
    else {
        #if PY_MAJOR_VERSION < 3
        py_funcname = PyString_FromString(funcname);
        #else
        py_funcname = PyUnicode_FromString(funcname);
        #endif
    }
    if (!py_funcname) goto bad;
    py_code = __Pyx_PyCode_New(
        0,
        0,
        0,
        0,
        0,
        __pyx_empty_bytes, /*PyObject *code,*/
        __pyx_empty_tuple, /*PyObject *consts,*/
        __pyx_empty_tuple, /*PyObject *names,*/
        __pyx_empty_tuple, /*PyObject *varnames,*/
        __pyx_empty_tuple, /*PyObject *freevars,*/
        __pyx_empty_tuple, /*PyObject *cellvars,*/
        py_srcfile,   /*PyObject *filename,*/
        py_funcname,  /*PyObject *name,*/
        py_line,
        __pyx_empty_bytes  /*PyObject *lnotab*/
    );
    Py_DECREF(py_srcfile);
    Py_DECREF(py_funcname);
    return py_code;
bad:
    Py_XDECREF(py_srcfile);
    Py_XDECREF(py_funcname);
    return NULL;
}
static void __Pyx_AddTraceback(const char *funcname, int c_line,
                               int py_line, const char *filename) {
    PyCodeObject *py_code = 0;
    PyFrameObject *py_frame = 0;
    py_code = __pyx_find_code_object(c_line ? c_line : py_line);
    if (!py_code) {
        py_code = __Pyx_CreateCodeObjectForTraceback(
            funcname, c_line, py_line, filename);
        if (!py_code) goto bad;
        __pyx_insert_code_object(c_line ? c_line : py_line, py_code);
    }
    py_frame = PyFrame_New(
        PyThreadState_GET(), /*PyThreadState *tstate,*/
        py_code,             /*PyCodeObject *code,*/
        __pyx_d,      /*PyObject *globals,*/
        0                    /*PyObject *locals*/
    );
    if (!py_frame) goto bad;
    __Pyx_PyFrame_SetLineNumber(py_frame, py_line);
    PyTraceBack_Here(py_frame);
bad:
    Py_XDECREF(py_code);
    Py_XDECREF(py_frame);
}

#if PY_MAJOR_VERSION < 3
static int __Pyx_GetBuffer(PyObject *obj, Py_buffer *view, int flags) {
    if (PyObject_CheckBuffer(obj)) return PyObject_GetBuffer(obj, view, flags);
        if (PyObject_TypeCheck(obj, __pyx_ptype_5numpy_ndarray)) return __pyx_pw_5numpy_7ndarray_1__getbuffer__(obj, view, flags);
    PyErr_Format(PyExc_TypeError, "'%.200s' does not have the buffer interface", Py_TYPE(obj)->tp_name);
    return -1;
}
static void __Pyx_ReleaseBuffer(Py_buffer *view) {
    PyObject *obj = view->obj;
    if (!obj) return;
    if (PyObject_CheckBuffer(obj)) {
        PyBuffer_Release(view);
        return;
    }
        if (PyObject_TypeCheck(obj, __pyx_ptype_5numpy_ndarray)) { __pyx_pw_5numpy_7ndarray_3__releasebuffer__(obj, view); return; }
    Py_DECREF(obj);
    view->obj = NULL;
}
#endif


            /* CIntFromPyVerify */
            #define __PYX_VERIFY_RETURN_INT(target_type, func_type, func_value)\
    __PYX__VERIFY_RETURN_INT(target_type, func_type, func_value, 0)
#define __PYX_VERIFY_RETURN_INT_EXC(target_type, func_type, func_value)\
    __PYX__VERIFY_RETURN_INT(target_type, func_type, func_value, 1)
#define __PYX__VERIFY_RETURN_INT(target_type, func_type, func_value, exc)\
    {\
        func_type value = func_value;\
        if (sizeof(target_type) < sizeof(func_type)) {\
            if (unlikely(value != (func_type) (target_type) value)) {\
                func_type zero = 0;\
                if (exc && unlikely(value == (func_type)-1 && PyErr_Occurred()))\
                    return (target_type) -1;\
                if (is_unsigned && unlikely(value < zero))\
                    goto raise_neg_overflow;\
                else\
                    goto raise_overflow;\
            }\
        }\
        return (target_type) value;\
    }

/* CIntToPy */
            static CYTHON_INLINE PyObject* __Pyx_PyInt_From_Py_intptr_t(Py_intptr_t value) {
    const Py_intptr_t neg_one = (Py_intptr_t) -1, const_zero = (Py_intptr_t) 0;
    const int is_unsigned = neg_one > const_zero;
    if (is_unsigned) {
        if (sizeof(Py_intptr_t) < sizeof(long)) {
            return PyInt_FromLong((long) value);
        } else if (sizeof(Py_intptr_t) <= sizeof(unsigned long)) {
            return PyLong_FromUnsignedLong((unsigned long) value);
#ifdef HAVE_LONG_LONG
        } else if (sizeof(Py_intptr_t) <= sizeof(unsigned PY_LONG_LONG)) {
            return PyLong_FromUnsignedLongLong((unsigned PY_LONG_LONG) value);
#endif
        }
    } else {
        if (sizeof(Py_intptr_t) <= sizeof(long)) {
            return PyInt_FromLong((long) value);
#ifdef HAVE_LONG_LONG
        } else if (sizeof(Py_intptr_t) <= sizeof(PY_LONG_LONG)) {
            return PyLong_FromLongLong((PY_LONG_LONG) value);
#endif
        }
    }
    {
        int one = 1; int little = (int)*(unsigned char *)&one;
        unsigned char *bytes = (unsigned char *)&value;
        return _PyLong_FromByteArray(bytes, sizeof(Py_intptr_t),
                                     little, !is_unsigned);
    }
}

/* CIntToPy */
            static CYTHON_INLINE PyObject* __Pyx_PyInt_From_long(long value) {
    const long neg_one = (long) -1, const_zero = (long) 0;
    const int is_unsigned = neg_one > const_zero;
    if (is_unsigned) {
        if (sizeof(long) < sizeof(long)) {
            return PyInt_FromLong((long) value);
        } else if (sizeof(long) <= sizeof(unsigned long)) {
            return PyLong_FromUnsignedLong((unsigned long) value);
#ifdef HAVE_LONG_LONG
        } else if (sizeof(long) <= sizeof(unsigned PY_LONG_LONG)) {
            return PyLong_FromUnsignedLongLong((unsigned PY_LONG_LONG) value);
#endif
        }
    } else {
        if (sizeof(long) <= sizeof(long)) {
            return PyInt_FromLong((long) value);
#ifdef HAVE_LONG_LONG
        } else if (sizeof(long) <= sizeof(PY_LONG_LONG)) {
            return PyLong_FromLongLong((PY_LONG_LONG) value);
#endif
        }
    }
    {
        int one = 1; int little = (int)*(unsigned char *)&one;
        unsigned char *bytes = (unsigned char *)&value;
        return _PyLong_FromByteArray(bytes, sizeof(long),
                                     little, !is_unsigned);
    }
}

/* Declarations */
            #if CYTHON_CCOMPLEX
  #ifdef __cplusplus
    static CYTHON_INLINE __pyx_t_float_complex __pyx_t_float_complex_from_parts(float x, float y) {
      return ::std::complex< float >(x, y);
    }
  #else
    static CYTHON_INLINE __pyx_t_float_complex __pyx_t_float_complex_from_parts(float x, float y) {
      return x + y*(__pyx_t_float_complex)_Complex_I;
    }
  #endif
#else
    static CYTHON_INLINE __pyx_t_float_complex __pyx_t_float_complex_from_parts(float x, float y) {
      __pyx_t_float_complex z;
      z.real = x;
      z.imag = y;
      return z;
    }
#endif

/* Arithmetic */
            #if CYTHON_CCOMPLEX
#else
    static CYTHON_INLINE int __Pyx_c_eq_float(__pyx_t_float_complex a, __pyx_t_float_complex b) {
       return (a.real == b.real) && (a.imag == b.imag);
    }
    static CYTHON_INLINE __pyx_t_float_complex __Pyx_c_sum_float(__pyx_t_float_complex a, __pyx_t_float_complex b) {
        __pyx_t_float_complex z;
        z.real = a.real + b.real;
        z.imag = a.imag + b.imag;
        return z;
    }
    static CYTHON_INLINE __pyx_t_float_complex __Pyx_c_diff_float(__pyx_t_float_complex a, __pyx_t_float_complex b) {
        __pyx_t_float_complex z;
        z.real = a.real - b.real;
        z.imag = a.imag - b.imag;
        return z;
    }
    static CYTHON_INLINE __pyx_t_float_complex __Pyx_c_prod_float(__pyx_t_float_complex a, __pyx_t_float_complex b) {
        __pyx_t_float_complex z;
        z.real = a.real * b.real - a.imag * b.imag;
        z.imag = a.real * b.imag + a.imag * b.real;
        return z;
    }
    #if 1
    static CYTHON_INLINE __pyx_t_float_complex __Pyx_c_quot_float(__pyx_t_float_complex a, __pyx_t_float_complex b) {
        if (b.imag == 0) {
            return __pyx_t_float_complex_from_parts(a.real / b.real, a.imag / b.real);
        } else if (fabsf(b.real) >= fabsf(b.imag)) {
            if (b.real == 0 && b.imag == 0) {
                return __pyx_t_float_complex_from_parts(a.real / b.real, a.imag / b.imag);
            } else {
                float r = b.imag / b.real;
                float s = 1.0 / (b.real + b.imag * r);
                return __pyx_t_float_complex_from_parts(
                    (a.real + a.imag * r) * s, (a.imag - a.real * r) * s);
            }
        } else {
            float r = b.real / b.imag;
            float s = 1.0 / (b.imag + b.real * r);
            return __pyx_t_float_complex_from_parts(
                (a.real * r + a.imag) * s, (a.imag * r - a.real) * s);
        }
    }
    #else
    static CYTHON_INLINE __pyx_t_float_complex __Pyx_c_quot_float(__pyx_t_float_complex a, __pyx_t_float_complex b) {
        if (b.imag == 0) {
            return __pyx_t_float_complex_from_parts(a.real / b.real, a.imag / b.real);
        } else {
            float denom = b.real * b.real + b.imag * b.imag;
            return __pyx_t_float_complex_from_parts(
                (a.real * b.real + a.imag * b.imag) / denom,
                (a.imag * b.real - a.real * b.imag) / denom);
        }
    }
    #endif
    static CYTHON_INLINE __pyx_t_float_complex __Pyx_c_neg_float(__pyx_t_float_complex a) {
        __pyx_t_float_complex z;
        z.real = -a.real;
        z.imag = -a.imag;
        return z;
    }
    static CYTHON_INLINE int __Pyx_c_is_zero_float(__pyx_t_float_complex a) {
       return (a.real == 0) && (a.imag == 0);
    }
    static CYTHON_INLINE __pyx_t_float_complex __Pyx_c_conj_float(__pyx_t_float_complex a) {
        __pyx_t_float_complex z;
        z.real =  a.real;
        z.imag = -a.imag;
        return z;
    }
    #if 1
        static CYTHON_INLINE float __Pyx_c_abs_float(__pyx_t_float_complex z) {
          #if !defined(HAVE_HYPOT) || defined(_MSC_VER)
            return sqrtf(z.real*z.real + z.imag*z.imag);
          #else
            return hypotf(z.real, z.imag);
          #endif
        }
        static CYTHON_INLINE __pyx_t_float_complex __Pyx_c_pow_float(__pyx_t_float_complex a, __pyx_t_float_complex b) {
            __pyx_t_float_complex z;
            float r, lnr, theta, z_r, z_theta;
            if (b.imag == 0 && b.real == (int)b.real) {
                if (b.real < 0) {
                    float denom = a.real * a.real + a.imag * a.imag;
                    a.real = a.real / denom;
                    a.imag = -a.imag / denom;
                    b.real = -b.real;
                }
                switch ((int)b.real) {
                    case 0:
                        z.real = 1;
                        z.imag = 0;
                        return z;
                    case 1:
                        return a;
                    case 2:
                        z = __Pyx_c_prod_float(a, a);
                        return __Pyx_c_prod_float(a, a);
                    case 3:
                        z = __Pyx_c_prod_float(a, a);
                        return __Pyx_c_prod_float(z, a);
                    case 4:
                        z = __Pyx_c_prod_float(a, a);
                        return __Pyx_c_prod_float(z, z);
                }
            }
            if (a.imag == 0) {
                if (a.real == 0) {
                    return a;
                } else if (b.imag == 0) {
                    z.real = powf(a.real, b.real);
                    z.imag = 0;
                    return z;
                } else if (a.real > 0) {
                    r = a.real;
                    theta = 0;
                } else {
                    r = -a.real;
                    theta = atan2f(0, -1);
                }
            } else {
                r = __Pyx_c_abs_float(a);
                theta = atan2f(a.imag, a.real);
            }
            lnr = logf(r);
            z_r = expf(lnr * b.real - theta * b.imag);
            z_theta = theta * b.real + lnr * b.imag;
            z.real = z_r * cosf(z_theta);
            z.imag = z_r * sinf(z_theta);
            return z;
        }
    #endif
#endif

/* Declarations */
            #if CYTHON_CCOMPLEX
  #ifdef __cplusplus
    static CYTHON_INLINE __pyx_t_double_complex __pyx_t_double_complex_from_parts(double x, double y) {
      return ::std::complex< double >(x, y);
    }
  #else
    static CYTHON_INLINE __pyx_t_double_complex __pyx_t_double_complex_from_parts(double x, double y) {
      return x + y*(__pyx_t_double_complex)_Complex_I;
    }
  #endif
#else
    static CYTHON_INLINE __pyx_t_double_complex __pyx_t_double_complex_from_parts(double x, double y) {
      __pyx_t_double_complex z;
      z.real = x;
      z.imag = y;
      return z;
    }
#endif

/* Arithmetic */
            #if CYTHON_CCOMPLEX
#else
    static CYTHON_INLINE int __Pyx_c_eq_double(__pyx_t_double_complex a, __pyx_t_double_complex b) {
       return (a.real == b.real) && (a.imag == b.imag);
    }
    static CYTHON_INLINE __pyx_t_double_complex __Pyx_c_sum_double(__pyx_t_double_complex a, __pyx_t_double_complex b) {
        __pyx_t_double_complex z;
        z.real = a.real + b.real;
        z.imag = a.imag + b.imag;
        return z;
    }
    static CYTHON_INLINE __pyx_t_double_complex __Pyx_c_diff_double(__pyx_t_double_complex a, __pyx_t_double_complex b) {
        __pyx_t_double_complex z;
        z.real = a.real - b.real;
        z.imag = a.imag - b.imag;
        return z;
    }
    static CYTHON_INLINE __pyx_t_double_complex __Pyx_c_prod_double(__pyx_t_double_complex a, __pyx_t_double_complex b) {
        __pyx_t_double_complex z;
        z.real = a.real * b.real - a.imag * b.imag;
        z.imag = a.real * b.imag + a.imag * b.real;
        return z;
    }
    #if 1
    static CYTHON_INLINE __pyx_t_double_complex __Pyx_c_quot_double(__pyx_t_double_complex a, __pyx_t_double_complex b) {
        if (b.imag == 0) {
            return __pyx_t_double_complex_from_parts(a.real / b.real, a.imag / b.real);
        } else if (fabs(b.real) >= fabs(b.imag)) {
            if (b.real == 0 && b.imag == 0) {
                return __pyx_t_double_complex_from_parts(a.real / b.real, a.imag / b.imag);
            } else {
                double r = b.imag / b.real;
                double s = 1.0 / (b.real + b.imag * r);
                return __pyx_t_double_complex_from_parts(
                    (a.real + a.imag * r) * s, (a.imag - a.real * r) * s);
            }
        } else {
            double r = b.real / b.imag;
            double s = 1.0 / (b.imag + b.real * r);
            return __pyx_t_double_complex_from_parts(
                (a.real * r + a.imag) * s, (a.imag * r - a.real) * s);
        }
    }
    #else
    static CYTHON_INLINE __pyx_t_double_complex __Pyx_c_quot_double(__pyx_t_double_complex a, __pyx_t_double_complex b) {
        if (b.imag == 0) {
            return __pyx_t_double_complex_from_parts(a.real / b.real, a.imag / b.real);
        } else {
            double denom = b.real * b.real + b.imag * b.imag;
            return __pyx_t_double_complex_from_parts(
                (a.real * b.real + a.imag * b.imag) / denom,
                (a.imag * b.real - a.real * b.imag) / denom);
        }
    }
    #endif
    static CYTHON_INLINE __pyx_t_double_complex __Pyx_c_neg_double(__pyx_t_double_complex a) {
        __pyx_t_double_complex z;
        z.real = -a.real;
        z.imag = -a.imag;
        return z;
    }
    static CYTHON_INLINE int __Pyx_c_is_zero_double(__pyx_t_double_complex a) {
       return (a.real == 0) && (a.imag == 0);
    }
    static CYTHON_INLINE __pyx_t_double_complex __Pyx_c_conj_double(__pyx_t_double_complex a) {
        __pyx_t_double_complex z;
        z.real =  a.real;
        z.imag = -a.imag;
        return z;
    }
    #if 1
        static CYTHON_INLINE double __Pyx_c_abs_double(__pyx_t_double_complex z) {
          #if !defined(HAVE_HYPOT) || defined(_MSC_VER)
            return sqrt(z.real*z.real + z.imag*z.imag);
          #else
            return hypot(z.real, z.imag);
          #endif
        }
        static CYTHON_INLINE __pyx_t_double_complex __Pyx_c_pow_double(__pyx_t_double_complex a, __pyx_t_double_complex b) {
            __pyx_t_double_complex z;
            double r, lnr, theta, z_r, z_theta;
            if (b.imag == 0 && b.real == (int)b.real) {
                if (b.real < 0) {
                    double denom = a.real * a.real + a.imag * a.imag;
                    a.real = a.real / denom;
                    a.imag = -a.imag / denom;
                    b.real = -b.real;
                }
                switch ((int)b.real) {
                    case 0:
                        z.real = 1;
                        z.imag = 0;
                        return z;
                    case 1:
                        return a;
                    case 2:
                        z = __Pyx_c_prod_double(a, a);
                        return __Pyx_c_prod_double(a, a);
                    case 3:
                        z = __Pyx_c_prod_double(a, a);
                        return __Pyx_c_prod_double(z, a);
                    case 4:
                        z = __Pyx_c_prod_double(a, a);
                        return __Pyx_c_prod_double(z, z);
                }
            }
            if (a.imag == 0) {
                if (a.real == 0) {
                    return a;
                } else if (b.imag == 0) {
                    z.real = pow(a.real, b.real);
                    z.imag = 0;
                    return z;
                } else if (a.real > 0) {
                    r = a.real;
                    theta = 0;
                } else {
                    r = -a.real;
                    theta = atan2(0, -1);
                }
            } else {
                r = __Pyx_c_abs_double(a);
                theta = atan2(a.imag, a.real);
            }
            lnr = log(r);
            z_r = exp(lnr * b.real - theta * b.imag);
            z_theta = theta * b.real + lnr * b.imag;
            z.real = z_r * cos(z_theta);
            z.imag = z_r * sin(z_theta);
            return z;
        }
    #endif
#endif

/* CIntToPy */
            static CYTHON_INLINE PyObject* __Pyx_PyInt_From_int(int value) {
    const int neg_one = (int) -1, const_zero = (int) 0;
    const int is_unsigned = neg_one > const_zero;
    if (is_unsigned) {
        if (sizeof(int) < sizeof(long)) {
            return PyInt_FromLong((long) value);
        } else if (sizeof(int) <= sizeof(unsigned long)) {
            return PyLong_FromUnsignedLong((unsigned long) value);
#ifdef HAVE_LONG_LONG
        } else if (sizeof(int) <= sizeof(unsigned PY_LONG_LONG)) {
            return PyLong_FromUnsignedLongLong((unsigned PY_LONG_LONG) value);
#endif
        }
    } else {
        if (sizeof(int) <= sizeof(long)) {
            return PyInt_FromLong((long) value);
#ifdef HAVE_LONG_LONG
        } else if (sizeof(int) <= sizeof(PY_LONG_LONG)) {
            return PyLong_FromLongLong((PY_LONG_LONG) value);
#endif
        }
    }
    {
        int one = 1; int little = (int)*(unsigned char *)&one;
        unsigned char *bytes = (unsigned char *)&value;
        return _PyLong_FromByteArray(bytes, sizeof(int),
                                     little, !is_unsigned);
    }
}

/* CIntToPy */
            static CYTHON_INLINE PyObject* __Pyx_PyInt_From_enum__NPY_TYPES(enum NPY_TYPES value) {
    const enum NPY_TYPES neg_one = (enum NPY_TYPES) -1, const_zero = (enum NPY_TYPES) 0;
    const int is_unsigned = neg_one > const_zero;
    if (is_unsigned) {
        if (sizeof(enum NPY_TYPES) < sizeof(long)) {
            return PyInt_FromLong((long) value);
        } else if (sizeof(enum NPY_TYPES) <= sizeof(unsigned long)) {
            return PyLong_FromUnsignedLong((unsigned long) value);
#ifdef HAVE_LONG_LONG
        } else if (sizeof(enum NPY_TYPES) <= sizeof(unsigned PY_LONG_LONG)) {
            return PyLong_FromUnsignedLongLong((unsigned PY_LONG_LONG) value);
#endif
        }
    } else {
        if (sizeof(enum NPY_TYPES) <= sizeof(long)) {
            return PyInt_FromLong((long) value);
#ifdef HAVE_LONG_LONG
        } else if (sizeof(enum NPY_TYPES) <= sizeof(PY_LONG_LONG)) {
            return PyLong_FromLongLong((PY_LONG_LONG) value);
#endif
        }
    }
    {
        int one = 1; int little = (int)*(unsigned char *)&one;
        unsigned char *bytes = (unsigned char *)&value;
        return _PyLong_FromByteArray(bytes, sizeof(enum NPY_TYPES),
                                     little, !is_unsigned);
    }
}

/* CIntFromPy */
            static CYTHON_INLINE Py_intptr_t __Pyx_PyInt_As_Py_intptr_t(PyObject *x) {
    const Py_intptr_t neg_one = (Py_intptr_t) -1, const_zero = (Py_intptr_t) 0;
    const int is_unsigned = neg_one > const_zero;
#if PY_MAJOR_VERSION < 3
    if (likely(PyInt_Check(x))) {
        if (sizeof(Py_intptr_t) < sizeof(long)) {
            __PYX_VERIFY_RETURN_INT(Py_intptr_t, long, PyInt_AS_LONG(x))
        } else {
            long val = PyInt_AS_LONG(x);
            if (is_unsigned && unlikely(val < 0)) {
                goto raise_neg_overflow;
            }
            return (Py_intptr_t) val;
        }
    } else
#endif
    if (likely(PyLong_Check(x))) {
        if (is_unsigned) {
#if CYTHON_USE_PYLONG_INTERNALS
            const digit* digits = ((PyLongObject*)x)->ob_digit;
            switch (Py_SIZE(x)) {
                case  0: return (Py_intptr_t) 0;
                case  1: __PYX_VERIFY_RETURN_INT(Py_intptr_t, digit, digits[0])
                case 2:
                    if (8 * sizeof(Py_intptr_t) > 1 * PyLong_SHIFT) {
                        if (8 * sizeof(unsigned long) > 2 * PyLong_SHIFT) {
                            __PYX_VERIFY_RETURN_INT(Py_intptr_t, unsigned long, (((((unsigned long)digits[1]) << PyLong_SHIFT) | (unsigned long)digits[0])))
                        } else if (8 * sizeof(Py_intptr_t) >= 2 * PyLong_SHIFT) {
                            return (Py_intptr_t) (((((Py_intptr_t)digits[1]) << PyLong_SHIFT) | (Py_intptr_t)digits[0]));
                        }
                    }
                    break;
                case 3:
                    if (8 * sizeof(Py_intptr_t) > 2 * PyLong_SHIFT) {
                        if (8 * sizeof(unsigned long) > 3 * PyLong_SHIFT) {
                            __PYX_VERIFY_RETURN_INT(Py_intptr_t, unsigned long, (((((((unsigned long)digits[2]) << PyLong_SHIFT) | (unsigned long)digits[1]) << PyLong_SHIFT) | (unsigned long)digits[0])))
                        } else if (8 * sizeof(Py_intptr_t) >= 3 * PyLong_SHIFT) {
                            return (Py_intptr_t) (((((((Py_intptr_t)digits[2]) << PyLong_SHIFT) | (Py_intptr_t)digits[1]) << PyLong_SHIFT) | (Py_intptr_t)digits[0]));
                        }
                    }
                    break;
                case 4:
                    if (8 * sizeof(Py_intptr_t) > 3 * PyLong_SHIFT) {
                        if (8 * sizeof(unsigned long) > 4 * PyLong_SHIFT) {
                            __PYX_VERIFY_RETURN_INT(Py_intptr_t, unsigned long, (((((((((unsigned long)digits[3]) << PyLong_SHIFT) | (unsigned long)digits[2]) << PyLong_SHIFT) | (unsigned long)digits[1]) << PyLong_SHIFT) | (unsigned long)digits[0])))
                        } else if (8 * sizeof(Py_intptr_t) >= 4 * PyLong_SHIFT) {
                            return (Py_intptr_t) (((((((((Py_intptr_t)digits[3]) << PyLong_SHIFT) | (Py_intptr_t)digits[2]) << PyLong_SHIFT) | (Py_intptr_t)digits[1]) << PyLong_SHIFT) | (Py_intptr_t)digits[0]));
                        }
                    }
                    break;
            }
#endif
#if CYTHON_COMPILING_IN_CPYTHON
            if (unlikely(Py_SIZE(x) < 0)) {
                goto raise_neg_overflow;
            }
#else
            {
                int result = PyObject_RichCompareBool(x, Py_False, Py_LT);
                if (unlikely(result < 0))
                    return (Py_intptr_t) -1;
                if (unlikely(result == 1))
                    goto raise_neg_overflow;
            }
#endif
            if (sizeof(Py_intptr_t) <= sizeof(unsigned long)) {
                __PYX_VERIFY_RETURN_INT_EXC(Py_intptr_t, unsigned long, PyLong_AsUnsignedLong(x))
#ifdef HAVE_LONG_LONG
            } else if (sizeof(Py_intptr_t) <= sizeof(unsigned PY_LONG_LONG)) {
                __PYX_VERIFY_RETURN_INT_EXC(Py_intptr_t, unsigned PY_LONG_LONG, PyLong_AsUnsignedLongLong(x))
#endif
            }
        } else {
#if CYTHON_USE_PYLONG_INTERNALS
            const digit* digits = ((PyLongObject*)x)->ob_digit;
            switch (Py_SIZE(x)) {
                case  0: return (Py_intptr_t) 0;
                case -1: __PYX_VERIFY_RETURN_INT(Py_intptr_t, sdigit, (sdigit) (-(sdigit)digits[0]))
                case  1: __PYX_VERIFY_RETURN_INT(Py_intptr_t,  digit, +digits[0])
                case -2:
                    if (8 * sizeof(Py_intptr_t) - 1 > 1 * PyLong_SHIFT) {
                        if (8 * sizeof(unsigned long) > 2 * PyLong_SHIFT) {
                            __PYX_VERIFY_RETURN_INT(Py_intptr_t, long, -(long) (((((unsigned long)digits[1]) << PyLong_SHIFT) | (unsigned long)digits[0])))
                        } else if (8 * sizeof(Py_intptr_t) - 1 > 2 * PyLong_SHIFT) {
                            return (Py_intptr_t) (((Py_intptr_t)-1)*(((((Py_intptr_t)digits[1]) << PyLong_SHIFT) | (Py_intptr_t)digits[0])));
                        }
                    }
                    break;
                case 2:
                    if (8 * sizeof(Py_intptr_t) > 1 * PyLong_SHIFT) {
                        if (8 * sizeof(unsigned long) > 2 * PyLong_SHIFT) {
                            __PYX_VERIFY_RETURN_INT(Py_intptr_t, unsigned long, (((((unsigned long)digits[1]) << PyLong_SHIFT) | (unsigned long)digits[0])))
                        } else if (8 * sizeof(Py_intptr_t) - 1 > 2 * PyLong_SHIFT) {
                            return (Py_intptr_t) ((((((Py_intptr_t)digits[1]) << PyLong_SHIFT) | (Py_intptr_t)digits[0])));
                        }
                    }
                    break;
                case -3:
                    if (8 * sizeof(Py_intptr_t) - 1 > 2 * PyLong_SHIFT) {
                        if (8 * sizeof(unsigned long) > 3 * PyLong_SHIFT) {
                            __PYX_VERIFY_RETURN_INT(Py_intptr_t, long, -(long) (((((((unsigned long)digits[2]) << PyLong_SHIFT) | (unsigned long)digits[1]) << PyLong_SHIFT) | (unsigned long)digits[0])))
                        } else if (8 * sizeof(Py_intptr_t) - 1 > 3 * PyLong_SHIFT) {
                            return (Py_intptr_t) (((Py_intptr_t)-1)*(((((((Py_intptr_t)digits[2]) << PyLong_SHIFT) | (Py_intptr_t)digits[1]) << PyLong_SHIFT) | (Py_intptr_t)digits[0])));
                        }
                    }
                    break;
                case 3:
                    if (8 * sizeof(Py_intptr_t) > 2 * PyLong_SHIFT) {
                        if (8 * sizeof(unsigned long) > 3 * PyLong_SHIFT) {
                            __PYX_VERIFY_RETURN_INT(Py_intptr_t, unsigned long, (((((((unsigned long)digits[2]) << PyLong_SHIFT) | (unsigned long)digits[1]) << PyLong_SHIFT) | (unsigned long)digits[0])))
                        } else if (8 * sizeof(Py_intptr_t) - 1 > 3 * PyLong_SHIFT) {
                            return (Py_intptr_t) ((((((((Py_intptr_t)digits[2]) << PyLong_SHIFT) | (Py_intptr_t)digits[1]) << PyLong_SHIFT) | (Py_intptr_t)digits[0])));
                        }
                    }
                    break;
                case -4:
                    if (8 * sizeof(Py_intptr_t) - 1 > 3 * PyLong_SHIFT) {
                        if (8 * sizeof(unsigned long) > 4 * PyLong_SHIFT) {
                            __PYX_VERIFY_RETURN_INT(Py_intptr_t, long, -(long) (((((((((unsigned long)digits[3]) << PyLong_SHIFT) | (unsigned long)digits[2]) << PyLong_SHIFT) | (unsigned long)digits[1]) << PyLong_SHIFT) | (unsigned long)digits[0])))
                        } else if (8 * sizeof(Py_intptr_t) - 1 > 4 * PyLong_SHIFT) {
                            return (Py_intptr_t) (((Py_intptr_t)-1)*(((((((((Py_intptr_t)digits[3]) << PyLong_SHIFT) | (Py_intptr_t)digits[2]) << PyLong_SHIFT) | (Py_intptr_t)digits[1]) << PyLong_SHIFT) | (Py_intptr_t)digits[0])));
                        }
                    }
                    break;
                case 4:
                    if (8 * sizeof(Py_intptr_t) > 3 * PyLong_SHIFT) {
                        if (8 * sizeof(unsigned long) > 4 * PyLong_SHIFT) {
                            __PYX_VERIFY_RETURN_INT(Py_intptr_t, unsigned long, (((((((((unsigned long)digits[3]) << PyLong_SHIFT) | (unsigned long)digits[2]) << PyLong_SHIFT) | (unsigned long)digits[1]) << PyLong_SHIFT) | (unsigned long)digits[0])))
                        } else if (8 * sizeof(Py_intptr_t) - 1 > 4 * PyLong_SHIFT) {
                            return (Py_intptr_t) ((((((((((Py_intptr_t)digits[3]) << PyLong_SHIFT) | (Py_intptr_t)digits[2]) << PyLong_SHIFT) | (Py_intptr_t)digits[1]) << PyLong_SHIFT) | (Py_intptr_t)digits[0])));
                        }
                    }
                    break;
            }
#endif
            if (sizeof(Py_intptr_t) <= sizeof(long)) {
                __PYX_VERIFY_RETURN_INT_EXC(Py_intptr_t, long, PyLong_AsLong(x))
#ifdef HAVE_LONG_LONG
            } else if (sizeof(Py_intptr_t) <= sizeof(PY_LONG_LONG)) {
                __PYX_VERIFY_RETURN_INT_EXC(Py_intptr_t, PY_LONG_LONG, PyLong_AsLongLong(x))
#endif
            }
        }
        {
#if CYTHON_COMPILING_IN_PYPY && !defined(_PyLong_AsByteArray)
            PyErr_SetString(PyExc_RuntimeError,
                            "_PyLong_AsByteArray() not available in PyPy, cannot convert large numbers");
#else
            Py_intptr_t val;
            PyObject *v = __Pyx_PyNumber_IntOrLong(x);
 #if PY_MAJOR_VERSION < 3
            if (likely(v) && !PyLong_Check(v)) {
                PyObject *tmp = v;
                v = PyNumber_Long(tmp);
                Py_DECREF(tmp);
            }
 #endif
            if (likely(v)) {
                int one = 1; int is_little = (int)*(unsigned char *)&one;
                unsigned char *bytes = (unsigned char *)&val;
                int ret = _PyLong_AsByteArray((PyLongObject *)v,
                                              bytes, sizeof(val),
                                              is_little, !is_unsigned);
                Py_DECREF(v);
                if (likely(!ret))
                    return val;
            }
#endif
            return (Py_intptr_t) -1;
        }
    } else {
        Py_intptr_t val;
        PyObject *tmp = __Pyx_PyNumber_IntOrLong(x);
        if (!tmp) return (Py_intptr_t) -1;
        val = __Pyx_PyInt_As_Py_intptr_t(tmp);
        Py_DECREF(tmp);
        return val;
    }
raise_overflow:
    PyErr_SetString(PyExc_OverflowError,
        "value too large to convert to Py_intptr_t");
    return (Py_intptr_t) -1;
raise_neg_overflow:
    PyErr_SetString(PyExc_OverflowError,
        "can't convert negative value to Py_intptr_t");
    return (Py_intptr_t) -1;
}

/* CIntFromPy */
            static CYTHON_INLINE int __Pyx_PyInt_As_int(PyObject *x) {
    const int neg_one = (int) -1, const_zero = (int) 0;
    const int is_unsigned = neg_one > const_zero;
#if PY_MAJOR_VERSION < 3
    if (likely(PyInt_Check(x))) {
        if (sizeof(int) < sizeof(long)) {
            __PYX_VERIFY_RETURN_INT(int, long, PyInt_AS_LONG(x))
        } else {
            long val = PyInt_AS_LONG(x);
            if (is_unsigned && unlikely(val < 0)) {
                goto raise_neg_overflow;
            }
            return (int) val;
        }
    } else
#endif
    if (likely(PyLong_Check(x))) {
        if (is_unsigned) {
#if CYTHON_USE_PYLONG_INTERNALS
            const digit* digits = ((PyLongObject*)x)->ob_digit;
            switch (Py_SIZE(x)) {
                case  0: return (int) 0;
                case  1: __PYX_VERIFY_RETURN_INT(int, digit, digits[0])
                case 2:
                    if (8 * sizeof(int) > 1 * PyLong_SHIFT) {
                        if (8 * sizeof(unsigned long) > 2 * PyLong_SHIFT) {
                            __PYX_VERIFY_RETURN_INT(int, unsigned long, (((((unsigned long)digits[1]) << PyLong_SHIFT) | (unsigned long)digits[0])))
                        } else if (8 * sizeof(int) >= 2 * PyLong_SHIFT) {
                            return (int) (((((int)digits[1]) << PyLong_SHIFT) | (int)digits[0]));
                        }
                    }
                    break;
                case 3:
                    if (8 * sizeof(int) > 2 * PyLong_SHIFT) {
                        if (8 * sizeof(unsigned long) > 3 * PyLong_SHIFT) {
                            __PYX_VERIFY_RETURN_INT(int, unsigned long, (((((((unsigned long)digits[2]) << PyLong_SHIFT) | (unsigned long)digits[1]) << PyLong_SHIFT) | (unsigned long)digits[0])))
                        } else if (8 * sizeof(int) >= 3 * PyLong_SHIFT) {
                            return (int) (((((((int)digits[2]) << PyLong_SHIFT) | (int)digits[1]) << PyLong_SHIFT) | (int)digits[0]));
                        }
                    }
                    break;
                case 4:
                    if (8 * sizeof(int) > 3 * PyLong_SHIFT) {
                        if (8 * sizeof(unsigned long) > 4 * PyLong_SHIFT) {
                            __PYX_VERIFY_RETURN_INT(int, unsigned long, (((((((((unsigned long)digits[3]) << PyLong_SHIFT) | (unsigned long)digits[2]) << PyLong_SHIFT) | (unsigned long)digits[1]) << PyLong_SHIFT) | (unsigned long)digits[0])))
                        } else if (8 * sizeof(int) >= 4 * PyLong_SHIFT) {
                            return (int) (((((((((int)digits[3]) << PyLong_SHIFT) | (int)digits[2]) << PyLong_SHIFT) | (int)digits[1]) << PyLong_SHIFT) | (int)digits[0]));
                        }
                    }
                    break;
            }
#endif
#if CYTHON_COMPILING_IN_CPYTHON
            if (unlikely(Py_SIZE(x) < 0)) {
                goto raise_neg_overflow;
            }
#else
            {
                int result = PyObject_RichCompareBool(x, Py_False, Py_LT);
                if (unlikely(result < 0))
                    return (int) -1;
                if (unlikely(result == 1))
                    goto raise_neg_overflow;
            }
#endif
            if (sizeof(int) <= sizeof(unsigned long)) {
                __PYX_VERIFY_RETURN_INT_EXC(int, unsigned long, PyLong_AsUnsignedLong(x))
#ifdef HAVE_LONG_LONG
            } else if (sizeof(int) <= sizeof(unsigned PY_LONG_LONG)) {
                __PYX_VERIFY_RETURN_INT_EXC(int, unsigned PY_LONG_LONG, PyLong_AsUnsignedLongLong(x))
#endif
            }
        } else {
#if CYTHON_USE_PYLONG_INTERNALS
            const digit* digits = ((PyLongObject*)x)->ob_digit;
            switch (Py_SIZE(x)) {
                case  0: return (int) 0;
                case -1: __PYX_VERIFY_RETURN_INT(int, sdigit, (sdigit) (-(sdigit)digits[0]))
                case  1: __PYX_VERIFY_RETURN_INT(int,  digit, +digits[0])
                case -2:
                    if (8 * sizeof(int) - 1 > 1 * PyLong_SHIFT) {
                        if (8 * sizeof(unsigned long) > 2 * PyLong_SHIFT) {
                            __PYX_VERIFY_RETURN_INT(int, long, -(long) (((((unsigned long)digits[1]) << PyLong_SHIFT) | (unsigned long)digits[0])))
                        } else if (8 * sizeof(int) - 1 > 2 * PyLong_SHIFT) {
                            return (int) (((int)-1)*(((((int)digits[1]) << PyLong_SHIFT) | (int)digits[0])));
                        }
                    }
                    break;
                case 2:
                    if (8 * sizeof(int) > 1 * PyLong_SHIFT) {
                        if (8 * sizeof(unsigned long) > 2 * PyLong_SHIFT) {
                            __PYX_VERIFY_RETURN_INT(int, unsigned long, (((((unsigned long)digits[1]) << PyLong_SHIFT) | (unsigned long)digits[0])))
                        } else if (8 * sizeof(int) - 1 > 2 * PyLong_SHIFT) {
                            return (int) ((((((int)digits[1]) << PyLong_SHIFT) | (int)digits[0])));
                        }
                    }
                    break;
                case -3:
                    if (8 * sizeof(int) - 1 > 2 * PyLong_SHIFT) {
                        if (8 * sizeof(unsigned long) > 3 * PyLong_SHIFT) {
                            __PYX_VERIFY_RETURN_INT(int, long, -(long) (((((((unsigned long)digits[2]) << PyLong_SHIFT) | (unsigned long)digits[1]) << PyLong_SHIFT) | (unsigned long)digits[0])))
                        } else if (8 * sizeof(int) - 1 > 3 * PyLong_SHIFT) {
                            return (int) (((int)-1)*(((((((int)digits[2]) << PyLong_SHIFT) | (int)digits[1]) << PyLong_SHIFT) | (int)digits[0])));
                        }
                    }
                    break;
                case 3:
                    if (8 * sizeof(int) > 2 * PyLong_SHIFT) {
                        if (8 * sizeof(unsigned long) > 3 * PyLong_SHIFT) {
                            __PYX_VERIFY_RETURN_INT(int, unsigned long, (((((((unsigned long)digits[2]) << PyLong_SHIFT) | (unsigned long)digits[1]) << PyLong_SHIFT) | (unsigned long)digits[0])))
                        } else if (8 * sizeof(int) - 1 > 3 * PyLong_SHIFT) {
                            return (int) ((((((((int)digits[2]) << PyLong_SHIFT) | (int)digits[1]) << PyLong_SHIFT) | (int)digits[0])));
                        }
                    }
                    break;
                case -4:
                    if (8 * sizeof(int) - 1 > 3 * PyLong_SHIFT) {
                        if (8 * sizeof(unsigned long) > 4 * PyLong_SHIFT) {
                            __PYX_VERIFY_RETURN_INT(int, long, -(long) (((((((((unsigned long)digits[3]) << PyLong_SHIFT) | (unsigned long)digits[2]) << PyLong_SHIFT) | (unsigned long)digits[1]) << PyLong_SHIFT) | (unsigned long)digits[0])))
                        } else if (8 * sizeof(int) - 1 > 4 * PyLong_SHIFT) {
                            return (int) (((int)-1)*(((((((((int)digits[3]) << PyLong_SHIFT) | (int)digits[2]) << PyLong_SHIFT) | (int)digits[1]) << PyLong_SHIFT) | (int)digits[0])));
                        }
                    }
                    break;
                case 4:
                    if (8 * sizeof(int) > 3 * PyLong_SHIFT) {
                        if (8 * sizeof(unsigned long) > 4 * PyLong_SHIFT) {
                            __PYX_VERIFY_RETURN_INT(int, unsigned long, (((((((((unsigned long)digits[3]) << PyLong_SHIFT) | (unsigned long)digits[2]) << PyLong_SHIFT) | (unsigned long)digits[1]) << PyLong_SHIFT) | (unsigned long)digits[0])))
                        } else if (8 * sizeof(int) - 1 > 4 * PyLong_SHIFT) {
                            return (int) ((((((((((int)digits[3]) << PyLong_SHIFT) | (int)digits[2]) << PyLong_SHIFT) | (int)digits[1]) << PyLong_SHIFT) | (int)digits[0])));
                        }
                    }
                    break;
            }
#endif
            if (sizeof(int) <= sizeof(long)) {
                __PYX_VERIFY_RETURN_INT_EXC(int, long, PyLong_AsLong(x))
#ifdef HAVE_LONG_LONG
            } else if (sizeof(int) <= sizeof(PY_LONG_LONG)) {
                __PYX_VERIFY_RETURN_INT_EXC(int, PY_LONG_LONG, PyLong_AsLongLong(x))
#endif
            }
        }
        {
#if CYTHON_COMPILING_IN_PYPY && !defined(_PyLong_AsByteArray)
            PyErr_SetString(PyExc_RuntimeError,
                            "_PyLong_AsByteArray() not available in PyPy, cannot convert large numbers");
#else
            int val;
            PyObject *v = __Pyx_PyNumber_IntOrLong(x);
 #if PY_MAJOR_VERSION < 3
            if (likely(v) && !PyLong_Check(v)) {
                PyObject *tmp = v;
                v = PyNumber_Long(tmp);
                Py_DECREF(tmp);
            }
 #endif
            if (likely(v)) {
                int one = 1; int is_little = (int)*(unsigned char *)&one;
                unsigned char *bytes = (unsigned char *)&val;
                int ret = _PyLong_AsByteArray((PyLongObject *)v,
                                              bytes, sizeof(val),
                                              is_little, !is_unsigned);
                Py_DECREF(v);
                if (likely(!ret))
                    return val;
            }
#endif
            return (int) -1;
        }
    } else {
        int val;
        PyObject *tmp = __Pyx_PyNumber_IntOrLong(x);
        if (!tmp) return (int) -1;
        val = __Pyx_PyInt_As_int(tmp);
        Py_DECREF(tmp);
        return val;
    }
raise_overflow:
    PyErr_SetString(PyExc_OverflowError,
        "value too large to convert to int");
    return (int) -1;
raise_neg_overflow:
    PyErr_SetString(PyExc_OverflowError,
        "can't convert negative value to int");
    return (int) -1;
}

/* CIntFromPy */
            static CYTHON_INLINE long __Pyx_PyInt_As_long(PyObject *x) {
    const long neg_one = (long) -1, const_zero = (long) 0;
    const int is_unsigned = neg_one > const_zero;
#if PY_MAJOR_VERSION < 3
    if (likely(PyInt_Check(x))) {
        if (sizeof(long) < sizeof(long)) {
            __PYX_VERIFY_RETURN_INT(long, long, PyInt_AS_LONG(x))
        } else {
            long val = PyInt_AS_LONG(x);
            if (is_unsigned && unlikely(val < 0)) {
                goto raise_neg_overflow;
            }
            return (long) val;
        }
    } else
#endif
    if (likely(PyLong_Check(x))) {
        if (is_unsigned) {
#if CYTHON_USE_PYLONG_INTERNALS
            const digit* digits = ((PyLongObject*)x)->ob_digit;
            switch (Py_SIZE(x)) {
                case  0: return (long) 0;
                case  1: __PYX_VERIFY_RETURN_INT(long, digit, digits[0])
                case 2:
                    if (8 * sizeof(long) > 1 * PyLong_SHIFT) {
                        if (8 * sizeof(unsigned long) > 2 * PyLong_SHIFT) {
                            __PYX_VERIFY_RETURN_INT(long, unsigned long, (((((unsigned long)digits[1]) << PyLong_SHIFT) | (unsigned long)digits[0])))
                        } else if (8 * sizeof(long) >= 2 * PyLong_SHIFT) {
                            return (long) (((((long)digits[1]) << PyLong_SHIFT) | (long)digits[0]));
                        }
                    }
                    break;
                case 3:
                    if (8 * sizeof(long) > 2 * PyLong_SHIFT) {
                        if (8 * sizeof(unsigned long) > 3 * PyLong_SHIFT) {
                            __PYX_VERIFY_RETURN_INT(long, unsigned long, (((((((unsigned long)digits[2]) << PyLong_SHIFT) | (unsigned long)digits[1]) << PyLong_SHIFT) | (unsigned long)digits[0])))
                        } else if (8 * sizeof(long) >= 3 * PyLong_SHIFT) {
                            return (long) (((((((long)digits[2]) << PyLong_SHIFT) | (long)digits[1]) << PyLong_SHIFT) | (long)digits[0]));
                        }
                    }
                    break;
                case 4:
                    if (8 * sizeof(long) > 3 * PyLong_SHIFT) {
                        if (8 * sizeof(unsigned long) > 4 * PyLong_SHIFT) {
                            __PYX_VERIFY_RETURN_INT(long, unsigned long, (((((((((unsigned long)digits[3]) << PyLong_SHIFT) | (unsigned long)digits[2]) << PyLong_SHIFT) | (unsigned long)digits[1]) << PyLong_SHIFT) | (unsigned long)digits[0])))
                        } else if (8 * sizeof(long) >= 4 * PyLong_SHIFT) {
                            return (long) (((((((((long)digits[3]) << PyLong_SHIFT) | (long)digits[2]) << PyLong_SHIFT) | (long)digits[1]) << PyLong_SHIFT) | (long)digits[0]));
                        }
                    }
                    break;
            }
#endif
#if CYTHON_COMPILING_IN_CPYTHON
            if (unlikely(Py_SIZE(x) < 0)) {
                goto raise_neg_overflow;
            }
#else
            {
                int result = PyObject_RichCompareBool(x, Py_False, Py_LT);
                if (unlikely(result < 0))
                    return (long) -1;
                if (unlikely(result == 1))
                    goto raise_neg_overflow;
            }
#endif
            if (sizeof(long) <= sizeof(unsigned long)) {
                __PYX_VERIFY_RETURN_INT_EXC(long, unsigned long, PyLong_AsUnsignedLong(x))
#ifdef HAVE_LONG_LONG
            } else if (sizeof(long) <= sizeof(unsigned PY_LONG_LONG)) {
                __PYX_VERIFY_RETURN_INT_EXC(long, unsigned PY_LONG_LONG, PyLong_AsUnsignedLongLong(x))
#endif
            }
        } else {
#if CYTHON_USE_PYLONG_INTERNALS
            const digit* digits = ((PyLongObject*)x)->ob_digit;
            switch (Py_SIZE(x)) {
                case  0: return (long) 0;
                case -1: __PYX_VERIFY_RETURN_INT(long, sdigit, (sdigit) (-(sdigit)digits[0]))
                case  1: __PYX_VERIFY_RETURN_INT(long,  digit, +digits[0])
                case -2:
                    if (8 * sizeof(long) - 1 > 1 * PyLong_SHIFT) {
                        if (8 * sizeof(unsigned long) > 2 * PyLong_SHIFT) {
                            __PYX_VERIFY_RETURN_INT(long, long, -(long) (((((unsigned long)digits[1]) << PyLong_SHIFT) | (unsigned long)digits[0])))
                        } else if (8 * sizeof(long) - 1 > 2 * PyLong_SHIFT) {
                            return (long) (((long)-1)*(((((long)digits[1]) << PyLong_SHIFT) | (long)digits[0])));
                        }
                    }
                    break;
                case 2:
                    if (8 * sizeof(long) > 1 * PyLong_SHIFT) {
                        if (8 * sizeof(unsigned long) > 2 * PyLong_SHIFT) {
                            __PYX_VERIFY_RETURN_INT(long, unsigned long, (((((unsigned long)digits[1]) << PyLong_SHIFT) | (unsigned long)digits[0])))
                        } else if (8 * sizeof(long) - 1 > 2 * PyLong_SHIFT) {
                            return (long) ((((((long)digits[1]) << PyLong_SHIFT) | (long)digits[0])));
                        }
                    }
                    break;
                case -3:
                    if (8 * sizeof(long) - 1 > 2 * PyLong_SHIFT) {
                        if (8 * sizeof(unsigned long) > 3 * PyLong_SHIFT) {
                            __PYX_VERIFY_RETURN_INT(long, long, -(long) (((((((unsigned long)digits[2]) << PyLong_SHIFT) | (unsigned long)digits[1]) << PyLong_SHIFT) | (unsigned long)digits[0])))
                        } else if (8 * sizeof(long) - 1 > 3 * PyLong_SHIFT) {
                            return (long) (((long)-1)*(((((((long)digits[2]) << PyLong_SHIFT) | (long)digits[1]) << PyLong_SHIFT) | (long)digits[0])));
                        }
                    }
                    break;
                case 3:
                    if (8 * sizeof(long) > 2 * PyLong_SHIFT) {
                        if (8 * sizeof(unsigned long) > 3 * PyLong_SHIFT) {
                            __PYX_VERIFY_RETURN_INT(long, unsigned long, (((((((unsigned long)digits[2]) << PyLong_SHIFT) | (unsigned long)digits[1]) << PyLong_SHIFT) | (unsigned long)digits[0])))
                        } else if (8 * sizeof(long) - 1 > 3 * PyLong_SHIFT) {
                            return (long) ((((((((long)digits[2]) << PyLong_SHIFT) | (long)digits[1]) << PyLong_SHIFT) | (long)digits[0])));
                        }
                    }
                    break;
                case -4:
                    if (8 * sizeof(long) - 1 > 3 * PyLong_SHIFT) {
                        if (8 * sizeof(unsigned long) > 4 * PyLong_SHIFT) {
                            __PYX_VERIFY_RETURN_INT(long, long, -(long) (((((((((unsigned long)digits[3]) << PyLong_SHIFT) | (unsigned long)digits[2]) << PyLong_SHIFT) | (unsigned long)digits[1]) << PyLong_SHIFT) | (unsigned long)digits[0])))
                        } else if (8 * sizeof(long) - 1 > 4 * PyLong_SHIFT) {
                            return (long) (((long)-1)*(((((((((long)digits[3]) << PyLong_SHIFT) | (long)digits[2]) << PyLong_SHIFT) | (long)digits[1]) << PyLong_SHIFT) | (long)digits[0])));
                        }
                    }
                    break;
                case 4:
                    if (8 * sizeof(long) > 3 * PyLong_SHIFT) {
                        if (8 * sizeof(unsigned long) > 4 * PyLong_SHIFT) {
                            __PYX_VERIFY_RETURN_INT(long, unsigned long, (((((((((unsigned long)digits[3]) << PyLong_SHIFT) | (unsigned long)digits[2]) << PyLong_SHIFT) | (unsigned long)digits[1]) << PyLong_SHIFT) | (unsigned long)digits[0])))
                        } else if (8 * sizeof(long) - 1 > 4 * PyLong_SHIFT) {
                            return (long) ((((((((((long)digits[3]) << PyLong_SHIFT) | (long)digits[2]) << PyLong_SHIFT) | (long)digits[1]) << PyLong_SHIFT) | (long)digits[0])));
                        }
                    }
                    break;
            }
#endif
            if (sizeof(long) <= sizeof(long)) {
                __PYX_VERIFY_RETURN_INT_EXC(long, long, PyLong_AsLong(x))
#ifdef HAVE_LONG_LONG
            } else if (sizeof(long) <= sizeof(PY_LONG_LONG)) {
                __PYX_VERIFY_RETURN_INT_EXC(long, PY_LONG_LONG, PyLong_AsLongLong(x))
#endif
            }
        }
        {
#if CYTHON_COMPILING_IN_PYPY && !defined(_PyLong_AsByteArray)
            PyErr_SetString(PyExc_RuntimeError,
                            "_PyLong_AsByteArray() not available in PyPy, cannot convert large numbers");
#else
            long val;
            PyObject *v = __Pyx_PyNumber_IntOrLong(x);
 #if PY_MAJOR_VERSION < 3
            if (likely(v) && !PyLong_Check(v)) {
                PyObject *tmp = v;
                v = PyNumber_Long(tmp);
                Py_DECREF(tmp);
            }
 #endif
            if (likely(v)) {
                int one = 1; int is_little = (int)*(unsigned char *)&one;
                unsigned char *bytes = (unsigned char *)&val;
                int ret = _PyLong_AsByteArray((PyLongObject *)v,
                                              bytes, sizeof(val),
                                              is_little, !is_unsigned);
                Py_DECREF(v);
                if (likely(!ret))
                    return val;
            }
#endif
            return (long) -1;
        }
    } else {
        long val;
        PyObject *tmp = __Pyx_PyNumber_IntOrLong(x);
        if (!tmp) return (long) -1;
        val = __Pyx_PyInt_As_long(tmp);
        Py_DECREF(tmp);
        return val;
    }
raise_overflow:
    PyErr_SetString(PyExc_OverflowError,
        "value too large to convert to long");
    return (long) -1;
raise_neg_overflow:
    PyErr_SetString(PyExc_OverflowError,
        "can't convert negative value to long");
    return (long) -1;
}

/* CheckBinaryVersion */
            static int __Pyx_check_binary_version(void) {
    char ctversion[4], rtversion[4];
    PyOS_snprintf(ctversion, 4, "%d.%d", PY_MAJOR_VERSION, PY_MINOR_VERSION);
    PyOS_snprintf(rtversion, 4, "%s", Py_GetVersion());
    if (ctversion[0] != rtversion[0] || ctversion[2] != rtversion[2]) {
        char message[200];
        PyOS_snprintf(message, sizeof(message),
                      "compiletime version %s of module '%.100s' "
                      "does not match runtime version %s",
                      ctversion, __Pyx_MODULE_NAME, rtversion);
        return PyErr_WarnEx(NULL, message, 1);
    }
    return 0;
}

/* ModuleImport */
            #ifndef __PYX_HAVE_RT_ImportModule
#define __PYX_HAVE_RT_ImportModule
static PyObject *__Pyx_ImportModule(const char *name) {
    PyObject *py_name = 0;
    PyObject *py_module = 0;
    py_name = __Pyx_PyIdentifier_FromString(name);
    if (!py_name)
        goto bad;
    py_module = PyImport_Import(py_name);
    Py_DECREF(py_name);
    return py_module;
bad:
    Py_XDECREF(py_name);
    return 0;
}
#endif

/* TypeImport */
            #ifndef __PYX_HAVE_RT_ImportType
#define __PYX_HAVE_RT_ImportType
static PyTypeObject *__Pyx_ImportType(const char *module_name, const char *class_name,
    size_t size, int strict)
{
    PyObject *py_module = 0;
    PyObject *result = 0;
    PyObject *py_name = 0;
    char warning[200];
    Py_ssize_t basicsize;
#ifdef Py_LIMITED_API
    PyObject *py_basicsize;
#endif
    py_module = __Pyx_ImportModule(module_name);
    if (!py_module)
        goto bad;
    py_name = __Pyx_PyIdentifier_FromString(class_name);
    if (!py_name)
        goto bad;
    result = PyObject_GetAttr(py_module, py_name);
    Py_DECREF(py_name);
    py_name = 0;
    Py_DECREF(py_module);
    py_module = 0;
    if (!result)
        goto bad;
    if (!PyType_Check(result)) {
        PyErr_Format(PyExc_TypeError,
            "%.200s.%.200s is not a type object",
            module_name, class_name);
        goto bad;
    }
#ifndef Py_LIMITED_API
    basicsize = ((PyTypeObject *)result)->tp_basicsize;
#else
    py_basicsize = PyObject_GetAttrString(result, "__basicsize__");
    if (!py_basicsize)
        goto bad;
    basicsize = PyLong_AsSsize_t(py_basicsize);
    Py_DECREF(py_basicsize);
    py_basicsize = 0;
    if (basicsize == (Py_ssize_t)-1 && PyErr_Occurred())
        goto bad;
#endif
    if (!strict && (size_t)basicsize > size) {
        PyOS_snprintf(warning, sizeof(warning),
            "%s.%s size changed, may indicate binary incompatibility. Expected %zd, got %zd",
            module_name, class_name, basicsize, size);
        if (PyErr_WarnEx(NULL, warning, 0) < 0) goto bad;
    }
    else if ((size_t)basicsize != size) {
        PyErr_Format(PyExc_ValueError,
            "%.200s.%.200s has the wrong size, try recompiling. Expected %zd, got %zd",
            module_name, class_name, basicsize, size);
        goto bad;
    }
    return (PyTypeObject *)result;
bad:
    Py_XDECREF(py_module);
    Py_XDECREF(result);
    return NULL;
}
#endif

/* FunctionImport */
            #ifndef __PYX_HAVE_RT_ImportFunction
#define __PYX_HAVE_RT_ImportFunction
static int __Pyx_ImportFunction(PyObject *module, const char *funcname, void (**f)(void), const char *sig) {
    PyObject *d = 0;
    PyObject *cobj = 0;
    union {
        void (*fp)(void);
        void *p;
    } tmp;
    d = PyObject_GetAttrString(module, (char *)"__pyx_capi__");
    if (!d)
        goto bad;
    cobj = PyDict_GetItemString(d, funcname);
    if (!cobj) {
        PyErr_Format(PyExc_ImportError,
            "%.200s does not export expected C function %.200s",
                PyModule_GetName(module), funcname);
        goto bad;
    }
#if PY_VERSION_HEX >= 0x02070000
    if (!PyCapsule_IsValid(cobj, sig)) {
        PyErr_Format(PyExc_TypeError,
            "C function %.200s.%.200s has wrong signature (expected %.500s, got %.500s)",
             PyModule_GetName(module), funcname, sig, PyCapsule_GetName(cobj));
        goto bad;
    }
    tmp.p = PyCapsule_GetPointer(cobj, sig);
#else
    {const char *desc, *s1, *s2;
    desc = (const char *)PyCObject_GetDesc(cobj);
    if (!desc)
        goto bad;
    s1 = desc; s2 = sig;
    while (*s1 != '\0' && *s1 == *s2) { s1++; s2++; }
    if (*s1 != *s2) {
        PyErr_Format(PyExc_TypeError,
            "C function %.200s.%.200s has wrong signature (expected %.500s, got %.500s)",
             PyModule_GetName(module), funcname, sig, desc);
        goto bad;
    }
    tmp.p = PyCObject_AsVoidPtr(cobj);}
#endif
    *f = tmp.fp;
    if (!(*f))
        goto bad;
    Py_DECREF(d);
    return 0;
bad:
    Py_XDECREF(d);
    return -1;
}
#endif

/* InitStrings */
            static int __Pyx_InitStrings(__Pyx_StringTabEntry *t) {
    while (t->p) {
        #if PY_MAJOR_VERSION < 3
        if (t->is_unicode) {
            *t->p = PyUnicode_DecodeUTF8(t->s, t->n - 1, NULL);
        } else if (t->intern) {
            *t->p = PyString_InternFromString(t->s);
        } else {
            *t->p = PyString_FromStringAndSize(t->s, t->n - 1);
        }
        #else
        if (t->is_unicode | t->is_str) {
            if (t->intern) {
                *t->p = PyUnicode_InternFromString(t->s);
            } else if (t->encoding) {
                *t->p = PyUnicode_Decode(t->s, t->n - 1, t->encoding, NULL);
            } else {
                *t->p = PyUnicode_FromStringAndSize(t->s, t->n - 1);
            }
        } else {
            *t->p = PyBytes_FromStringAndSize(t->s, t->n - 1);
        }
        #endif
        if (!*t->p)
            return -1;
        ++t;
    }
    return 0;
}

static CYTHON_INLINE PyObject* __Pyx_PyUnicode_FromString(const char* c_str) {
    return __Pyx_PyUnicode_FromStringAndSize(c_str, (Py_ssize_t)strlen(c_str));
}
static CYTHON_INLINE char* __Pyx_PyObject_AsString(PyObject* o) {
    Py_ssize_t ignore;
    return __Pyx_PyObject_AsStringAndSize(o, &ignore);
}
static CYTHON_INLINE char* __Pyx_PyObject_AsStringAndSize(PyObject* o, Py_ssize_t *length) {
#if CYTHON_COMPILING_IN_CPYTHON && (__PYX_DEFAULT_STRING_ENCODING_IS_ASCII || __PYX_DEFAULT_STRING_ENCODING_IS_DEFAULT)
    if (
#if PY_MAJOR_VERSION < 3 && __PYX_DEFAULT_STRING_ENCODING_IS_ASCII
            __Pyx_sys_getdefaultencoding_not_ascii &&
#endif
            PyUnicode_Check(o)) {
#if PY_VERSION_HEX < 0x03030000
        char* defenc_c;
        PyObject* defenc = _PyUnicode_AsDefaultEncodedString(o, NULL);
        if (!defenc) return NULL;
        defenc_c = PyBytes_AS_STRING(defenc);
#if __PYX_DEFAULT_STRING_ENCODING_IS_ASCII
        {
            char* end = defenc_c + PyBytes_GET_SIZE(defenc);
            char* c;
            for (c = defenc_c; c < end; c++) {
                if ((unsigned char) (*c) >= 128) {
                    PyUnicode_AsASCIIString(o);
                    return NULL;
                }
            }
        }
#endif
        *length = PyBytes_GET_SIZE(defenc);
        return defenc_c;
#else
        if (__Pyx_PyUnicode_READY(o) == -1) return NULL;
#if __PYX_DEFAULT_STRING_ENCODING_IS_ASCII
        if (PyUnicode_IS_ASCII(o)) {
            *length = PyUnicode_GET_LENGTH(o);
            return PyUnicode_AsUTF8(o);
        } else {
            PyUnicode_AsASCIIString(o);
            return NULL;
        }
#else
        return PyUnicode_AsUTF8AndSize(o, length);
#endif
#endif
    } else
#endif
#if (!CYTHON_COMPILING_IN_PYPY) || (defined(PyByteArray_AS_STRING) && defined(PyByteArray_GET_SIZE))
    if (PyByteArray_Check(o)) {
        *length = PyByteArray_GET_SIZE(o);
        return PyByteArray_AS_STRING(o);
    } else
#endif
    {
        char* result;
        int r = PyBytes_AsStringAndSize(o, &result, length);
        if (unlikely(r < 0)) {
            return NULL;
        } else {
            return result;
        }
    }
}
static CYTHON_INLINE int __Pyx_PyObject_IsTrue(PyObject* x) {
   int is_true = x == Py_True;
   if (is_true | (x == Py_False) | (x == Py_None)) return is_true;
   else return PyObject_IsTrue(x);
}
static CYTHON_INLINE PyObject* __Pyx_PyNumber_IntOrLong(PyObject* x) {
#if CYTHON_USE_TYPE_SLOTS
  PyNumberMethods *m;
#endif
  const char *name = NULL;
  PyObject *res = NULL;
#if PY_MAJOR_VERSION < 3
  if (PyInt_Check(x) || PyLong_Check(x))
#else
  if (PyLong_Check(x))
#endif
    return __Pyx_NewRef(x);
#if CYTHON_USE_TYPE_SLOTS
  m = Py_TYPE(x)->tp_as_number;
  #if PY_MAJOR_VERSION < 3
  if (m && m->nb_int) {
    name = "int";
    res = PyNumber_Int(x);
  }
  else if (m && m->nb_long) {
    name = "long";
    res = PyNumber_Long(x);
  }
  #else
  if (m && m->nb_int) {
    name = "int";
    res = PyNumber_Long(x);
  }
  #endif
#else
  res = PyNumber_Int(x);
#endif
  if (res) {
#if PY_MAJOR_VERSION < 3
    if (!PyInt_Check(res) && !PyLong_Check(res)) {
#else
    if (!PyLong_Check(res)) {
#endif
      PyErr_Format(PyExc_TypeError,
                   "__%.4s__ returned non-%.4s (type %.200s)",
                   name, name, Py_TYPE(res)->tp_name);
      Py_DECREF(res);
      return NULL;
    }
  }
  else if (!PyErr_Occurred()) {
    PyErr_SetString(PyExc_TypeError,
                    "an integer is required");
  }
  return res;
}
static CYTHON_INLINE Py_ssize_t __Pyx_PyIndex_AsSsize_t(PyObject* b) {
  Py_ssize_t ival;
  PyObject *x;
#if PY_MAJOR_VERSION < 3
  if (likely(PyInt_CheckExact(b))) {
    if (sizeof(Py_ssize_t) >= sizeof(long))
        return PyInt_AS_LONG(b);
    else
        return PyInt_AsSsize_t(x);
  }
#endif
  if (likely(PyLong_CheckExact(b))) {
    #if CYTHON_USE_PYLONG_INTERNALS
    const digit* digits = ((PyLongObject*)b)->ob_digit;
    const Py_ssize_t size = Py_SIZE(b);
    if (likely(__Pyx_sst_abs(size) <= 1)) {
        ival = likely(size) ? digits[0] : 0;
        if (size == -1) ival = -ival;
        return ival;
    } else {
      switch (size) {
         case 2:
           if (8 * sizeof(Py_ssize_t) > 2 * PyLong_SHIFT) {
             return (Py_ssize_t) (((((size_t)digits[1]) << PyLong_SHIFT) | (size_t)digits[0]));
           }
           break;
         case -2:
           if (8 * sizeof(Py_ssize_t) > 2 * PyLong_SHIFT) {
             return -(Py_ssize_t) (((((size_t)digits[1]) << PyLong_SHIFT) | (size_t)digits[0]));
           }
           break;
         case 3:
           if (8 * sizeof(Py_ssize_t) > 3 * PyLong_SHIFT) {
             return (Py_ssize_t) (((((((size_t)digits[2]) << PyLong_SHIFT) | (size_t)digits[1]) << PyLong_SHIFT) | (size_t)digits[0]));
           }
           break;
         case -3:
           if (8 * sizeof(Py_ssize_t) > 3 * PyLong_SHIFT) {
             return -(Py_ssize_t) (((((((size_t)digits[2]) << PyLong_SHIFT) | (size_t)digits[1]) << PyLong_SHIFT) | (size_t)digits[0]));
           }
           break;
         case 4:
           if (8 * sizeof(Py_ssize_t) > 4 * PyLong_SHIFT) {
             return (Py_ssize_t) (((((((((size_t)digits[3]) << PyLong_SHIFT) | (size_t)digits[2]) << PyLong_SHIFT) | (size_t)digits[1]) << PyLong_SHIFT) | (size_t)digits[0]));
           }
           break;
         case -4:
           if (8 * sizeof(Py_ssize_t) > 4 * PyLong_SHIFT) {
             return -(Py_ssize_t) (((((((((size_t)digits[3]) << PyLong_SHIFT) | (size_t)digits[2]) << PyLong_SHIFT) | (size_t)digits[1]) << PyLong_SHIFT) | (size_t)digits[0]));
           }
           break;
      }
    }
    #endif
    return PyLong_AsSsize_t(b);
  }
  x = PyNumber_Index(b);
  if (!x) return -1;
  ival = PyInt_AsSsize_t(x);
  Py_DECREF(x);
  return ival;
}
static CYTHON_INLINE PyObject * __Pyx_PyInt_FromSize_t(size_t ival) {
    return PyInt_FromSize_t(ival);
}


#endif /* Py_PYTHON_H */
