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 *     cpdef Matrix view_clip(Matrix self, double left, double right, double bottom, double top,             # <<<<<<<<<<<<<<
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  /* "/home/tito/code/kivy/kivy/graphics/transformation.pyx":128
 *         '''
 *         cdef double t
 *         if left >= right or bottom >= top or near >= far:             # <<<<<<<<<<<<<<
 *             raise ValueError('invalid frustrum')
 *         if perspective:
 */
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    /* "/home/tito/code/kivy/kivy/graphics/transformation.pyx":129
 *         cdef double t
 *         if left >= right or bottom >= top or near >= far:
 *             raise ValueError('invalid frustrum')             # <<<<<<<<<<<<<<
 *         if perspective:
 *             raise Exception('not tested')
 */
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  /* "/home/tito/code/kivy/kivy/graphics/transformation.pyx":130
 *         if left >= right or bottom >= top or near >= far:
 *             raise ValueError('invalid frustrum')
 *         if perspective:             # <<<<<<<<<<<<<<
 *             raise Exception('not tested')
 *             if near <= _EPS:
 */
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    /* "/home/tito/code/kivy/kivy/graphics/transformation.pyx":131
 *             raise ValueError('invalid frustrum')
 *         if perspective:
 *             raise Exception('not tested')             # <<<<<<<<<<<<<<
 *             if near <= _EPS:
 *                 raise ValueError('invalid frustrum: near <= 0')
 */
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    /* "/home/tito/code/kivy/kivy/graphics/transformation.pyx":132
 *         if perspective:
 *             raise Exception('not tested')
 *             if near <= _EPS:             # <<<<<<<<<<<<<<
 *                 raise ValueError('invalid frustrum: near <= 0')
 * 
 */
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      /* "/home/tito/code/kivy/kivy/graphics/transformation.pyx":133
 *             raise Exception('not tested')
 *             if near <= _EPS:
 *                 raise ValueError('invalid frustrum: near <= 0')             # <<<<<<<<<<<<<<
 * 
 *         with nogil:
 */
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  /* "/home/tito/code/kivy/kivy/graphics/transformation.pyx":135
 *                 raise ValueError('invalid frustrum: near <= 0')
 * 
 *         with nogil:             # <<<<<<<<<<<<<<
 *             if perspective:
 *                 t = 2.0 * near
 */
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      /* "/home/tito/code/kivy/kivy/graphics/transformation.pyx":136
 * 
 *         with nogil:
 *             if perspective:             # <<<<<<<<<<<<<<
 *                 t = 2.0 * near
 *                 self.mat[0]  = -t/(right-left)
 */
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        /* "/home/tito/code/kivy/kivy/graphics/transformation.pyx":137
 *         with nogil:
 *             if perspective:
 *                 t = 2.0 * near             # <<<<<<<<<<<<<<
 *                 self.mat[0]  = -t/(right-left)
 *                 self.mat[4]  = 0.0
 */
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        /* "/home/tito/code/kivy/kivy/graphics/transformation.pyx":138
 *             if perspective:
 *                 t = 2.0 * near
 *                 self.mat[0]  = -t/(right-left)             # <<<<<<<<<<<<<<
 *                 self.mat[4]  = 0.0
 *                 self.mat[8]  = (right+left)/(right-left)
 */
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        /* "/home/tito/code/kivy/kivy/graphics/transformation.pyx":139
 *                 t = 2.0 * near
 *                 self.mat[0]  = -t/(right-left)
 *                 self.mat[4]  = 0.0             # <<<<<<<<<<<<<<
 *                 self.mat[8]  = (right+left)/(right-left)
 *                 self.mat[12] = 0.0
 */
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        /* "/home/tito/code/kivy/kivy/graphics/transformation.pyx":140
 *                 self.mat[0]  = -t/(right-left)
 *                 self.mat[4]  = 0.0
 *                 self.mat[8]  = (right+left)/(right-left)             # <<<<<<<<<<<<<<
 *                 self.mat[12] = 0.0
 *                 self.mat[1]  = 0.0
 */
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        /* "/home/tito/code/kivy/kivy/graphics/transformation.pyx":141
 *                 self.mat[4]  = 0.0
 *                 self.mat[8]  = (right+left)/(right-left)
 *                 self.mat[12] = 0.0             # <<<<<<<<<<<<<<
 *                 self.mat[1]  = 0.0
 *                 self.mat[5]  = -t/(top-bottom)
 */
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        /* "/home/tito/code/kivy/kivy/graphics/transformation.pyx":142
 *                 self.mat[8]  = (right+left)/(right-left)
 *                 self.mat[12] = 0.0
 *                 self.mat[1]  = 0.0             # <<<<<<<<<<<<<<
 *                 self.mat[5]  = -t/(top-bottom)
 *                 self.mat[9]  = (top+bottom)/(top-bottom)
 */
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        /* "/home/tito/code/kivy/kivy/graphics/transformation.pyx":143
 *                 self.mat[12] = 0.0
 *                 self.mat[1]  = 0.0
 *                 self.mat[5]  = -t/(top-bottom)             # <<<<<<<<<<<<<<
 *                 self.mat[9]  = (top+bottom)/(top-bottom)
 *                 self.mat[13] = 0.0
 */
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        /* "/home/tito/code/kivy/kivy/graphics/transformation.pyx":144
 *                 self.mat[1]  = 0.0
 *                 self.mat[5]  = -t/(top-bottom)
 *                 self.mat[9]  = (top+bottom)/(top-bottom)             # <<<<<<<<<<<<<<
 *                 self.mat[13] = 0.0
 *                 self.mat[2]  = 0.0
 */
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        /* "/home/tito/code/kivy/kivy/graphics/transformation.pyx":145
 *                 self.mat[5]  = -t/(top-bottom)
 *                 self.mat[9]  = (top+bottom)/(top-bottom)
 *                 self.mat[13] = 0.0             # <<<<<<<<<<<<<<
 *                 self.mat[2]  = 0.0
 *                 self.mat[6]  = 0.0
 */
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        /* "/home/tito/code/kivy/kivy/graphics/transformation.pyx":146
 *                 self.mat[9]  = (top+bottom)/(top-bottom)
 *                 self.mat[13] = 0.0
 *                 self.mat[2]  = 0.0             # <<<<<<<<<<<<<<
 *                 self.mat[6]  = 0.0
 *                 self.mat[10] = -(far+near)/(far-near)
 */
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        /* "/home/tito/code/kivy/kivy/graphics/transformation.pyx":147
 *                 self.mat[13] = 0.0
 *                 self.mat[2]  = 0.0
 *                 self.mat[6]  = 0.0             # <<<<<<<<<<<<<<
 *                 self.mat[10] = -(far+near)/(far-near)
 *                 self.mat[14] = t*far/(far-near)
 */
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        /* "/home/tito/code/kivy/kivy/graphics/transformation.pyx":148
 *                 self.mat[2]  = 0.0
 *                 self.mat[6]  = 0.0
 *                 self.mat[10] = -(far+near)/(far-near)             # <<<<<<<<<<<<<<
 *                 self.mat[14] = t*far/(far-near)
 *                 self.mat[3]  = 0.0
 */
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        /* "/home/tito/code/kivy/kivy/graphics/transformation.pyx":149
 *                 self.mat[6]  = 0.0
 *                 self.mat[10] = -(far+near)/(far-near)
 *                 self.mat[14] = t*far/(far-near)             # <<<<<<<<<<<<<<
 *                 self.mat[3]  = 0.0
 *                 self.mat[7]  = 0.0
 */
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        /* "/home/tito/code/kivy/kivy/graphics/transformation.pyx":150
 *                 self.mat[10] = -(far+near)/(far-near)
 *                 self.mat[14] = t*far/(far-near)
 *                 self.mat[3]  = 0.0             # <<<<<<<<<<<<<<
 *                 self.mat[7]  = 0.0
 *                 self.mat[11] = -1.0
 */
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 *                 self.mat[14] = t*far/(far-near)
 *                 self.mat[3]  = 0.0
 *                 self.mat[7]  = 0.0             # <<<<<<<<<<<<<<
 *                 self.mat[11] = -1.0
 *                 self.mat[15] = 0.0
 */
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 *                 self.mat[3]  = 0.0
 *                 self.mat[7]  = 0.0
 *                 self.mat[11] = -1.0             # <<<<<<<<<<<<<<
 *                 self.mat[15] = 0.0
 *             else:
 */
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 *                 self.mat[11] = -1.0
 *                 self.mat[15] = 0.0             # <<<<<<<<<<<<<<
 *             else:
 *                 #(0, 4, 8, 12, 1, 5, 9, 13, 2, 6, 10, 14, 3, 7, 11, 15)
 */
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 *             else:
 *                 #(0, 4, 8, 12, 1, 5, 9, 13, 2, 6, 10, 14, 3, 7, 11, 15)
 *                 self.mat[0]  = 2.0/(right-left)             # <<<<<<<<<<<<<<
 *                 self.mat[4]  = 0.0
 *                 self.mat[8]  = 0.0
 */
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        /* "/home/tito/code/kivy/kivy/graphics/transformation.pyx":157
 *                 #(0, 4, 8, 12, 1, 5, 9, 13, 2, 6, 10, 14, 3, 7, 11, 15)
 *                 self.mat[0]  = 2.0/(right-left)
 *                 self.mat[4]  = 0.0             # <<<<<<<<<<<<<<
 *                 self.mat[8]  = 0.0
 *                 self.mat[12] = (right+left)/(left-right)
 */
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        /* "/home/tito/code/kivy/kivy/graphics/transformation.pyx":158
 *                 self.mat[0]  = 2.0/(right-left)
 *                 self.mat[4]  = 0.0
 *                 self.mat[8]  = 0.0             # <<<<<<<<<<<<<<
 *                 self.mat[12] = (right+left)/(left-right)
 *                 self.mat[1]  = 0.0
 */
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 *                 self.mat[4]  = 0.0
 *                 self.mat[8]  = 0.0
 *                 self.mat[12] = (right+left)/(left-right)             # <<<<<<<<<<<<<<
 *                 self.mat[1]  = 0.0
 *                 self.mat[5]  = 2.0/(top-bottom)
 */
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 *                 self.mat[8]  = 0.0
 *                 self.mat[12] = (right+left)/(left-right)
 *                 self.mat[1]  = 0.0             # <<<<<<<<<<<<<<
 *                 self.mat[5]  = 2.0/(top-bottom)
 *                 self.mat[9]  = 0.0
 */
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        /* "/home/tito/code/kivy/kivy/graphics/transformation.pyx":161
 *                 self.mat[12] = (right+left)/(left-right)
 *                 self.mat[1]  = 0.0
 *                 self.mat[5]  = 2.0/(top-bottom)             # <<<<<<<<<<<<<<
 *                 self.mat[9]  = 0.0
 *                 self.mat[13] = (top+bottom)/(bottom-top)
 */
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        /* "/home/tito/code/kivy/kivy/graphics/transformation.pyx":162
 *                 self.mat[1]  = 0.0
 *                 self.mat[5]  = 2.0/(top-bottom)
 *                 self.mat[9]  = 0.0             # <<<<<<<<<<<<<<
 *                 self.mat[13] = (top+bottom)/(bottom-top)
 *                 self.mat[2]  = 0.0
 */
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 *                 self.mat[5]  = 2.0/(top-bottom)
 *                 self.mat[9]  = 0.0
 *                 self.mat[13] = (top+bottom)/(bottom-top)             # <<<<<<<<<<<<<<
 *                 self.mat[2]  = 0.0
 *                 self.mat[6]  = 0.0
 */
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static void __Pyx_RaiseArgtupleInvalid(
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invalid_keyword_type:
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invalid_keyword:
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    #if PY_MAJOR_VERSION < 3
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                        #if PY_MAJOR_VERSION >= 3
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arg_passed_twice:
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invalid_keyword_type:
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invalid_keyword:
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bad:
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#if PY_MAJOR_VERSION < 3
static void __Pyx_Raise(PyObject *type, PyObject *value, PyObject *tb) {
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bad:
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    const int is_unsigned = neg_one > const_zero;
    if (sizeof(unsigned char) < sizeof(long)) {
        long val = __Pyx_PyInt_AsLong(x);
        if (unlikely(val != (long)(unsigned char)val)) {
            if (!unlikely(val == -1 && PyErr_Occurred())) {
                PyErr_SetString(PyExc_OverflowError,
                    (is_unsigned && unlikely(val < 0)) ?
                    "can't convert negative value to unsigned char" :
                    "value too large to convert to unsigned char");
            }
            return (unsigned char)-1;
        }
        return (unsigned char)val;
    }
    return (unsigned char)__Pyx_PyInt_AsUnsignedLong(x);
}

static CYTHON_INLINE unsigned short __Pyx_PyInt_AsUnsignedShort(PyObject* x) {
    const unsigned short neg_one = (unsigned short)-1, const_zero = 0;
    const int is_unsigned = neg_one > const_zero;
    if (sizeof(unsigned short) < sizeof(long)) {
        long val = __Pyx_PyInt_AsLong(x);
        if (unlikely(val != (long)(unsigned short)val)) {
            if (!unlikely(val == -1 && PyErr_Occurred())) {
                PyErr_SetString(PyExc_OverflowError,
                    (is_unsigned && unlikely(val < 0)) ?
                    "can't convert negative value to unsigned short" :
                    "value too large to convert to unsigned short");
            }
            return (unsigned short)-1;
        }
        return (unsigned short)val;
    }
    return (unsigned short)__Pyx_PyInt_AsUnsignedLong(x);
}

static CYTHON_INLINE unsigned int __Pyx_PyInt_AsUnsignedInt(PyObject* x) {
    const unsigned int neg_one = (unsigned int)-1, const_zero = 0;
    const int is_unsigned = neg_one > const_zero;
    if (sizeof(unsigned int) < sizeof(long)) {
        long val = __Pyx_PyInt_AsLong(x);
        if (unlikely(val != (long)(unsigned int)val)) {
            if (!unlikely(val == -1 && PyErr_Occurred())) {
                PyErr_SetString(PyExc_OverflowError,
                    (is_unsigned && unlikely(val < 0)) ?
                    "can't convert negative value to unsigned int" :
                    "value too large to convert to unsigned int");
            }
            return (unsigned int)-1;
        }
        return (unsigned int)val;
    }
    return (unsigned int)__Pyx_PyInt_AsUnsignedLong(x);
}

static CYTHON_INLINE char __Pyx_PyInt_AsChar(PyObject* x) {
    const char neg_one = (char)-1, const_zero = 0;
    const int is_unsigned = neg_one > const_zero;
    if (sizeof(char) < sizeof(long)) {
        long val = __Pyx_PyInt_AsLong(x);
        if (unlikely(val != (long)(char)val)) {
            if (!unlikely(val == -1 && PyErr_Occurred())) {
                PyErr_SetString(PyExc_OverflowError,
                    (is_unsigned && unlikely(val < 0)) ?
                    "can't convert negative value to char" :
                    "value too large to convert to char");
            }
            return (char)-1;
        }
        return (char)val;
    }
    return (char)__Pyx_PyInt_AsLong(x);
}

static CYTHON_INLINE short __Pyx_PyInt_AsShort(PyObject* x) {
    const short neg_one = (short)-1, const_zero = 0;
    const int is_unsigned = neg_one > const_zero;
    if (sizeof(short) < sizeof(long)) {
        long val = __Pyx_PyInt_AsLong(x);
        if (unlikely(val != (long)(short)val)) {
            if (!unlikely(val == -1 && PyErr_Occurred())) {
                PyErr_SetString(PyExc_OverflowError,
                    (is_unsigned && unlikely(val < 0)) ?
                    "can't convert negative value to short" :
                    "value too large to convert to short");
            }
            return (short)-1;
        }
        return (short)val;
    }
    return (short)__Pyx_PyInt_AsLong(x);
}

static CYTHON_INLINE int __Pyx_PyInt_AsInt(PyObject* x) {
    const int neg_one = (int)-1, const_zero = 0;
    const int is_unsigned = neg_one > const_zero;
    if (sizeof(int) < sizeof(long)) {
        long val = __Pyx_PyInt_AsLong(x);
        if (unlikely(val != (long)(int)val)) {
            if (!unlikely(val == -1 && PyErr_Occurred())) {
                PyErr_SetString(PyExc_OverflowError,
                    (is_unsigned && unlikely(val < 0)) ?
                    "can't convert negative value to int" :
                    "value too large to convert to int");
            }
            return (int)-1;
        }
        return (int)val;
    }
    return (int)__Pyx_PyInt_AsLong(x);
}

static CYTHON_INLINE signed char __Pyx_PyInt_AsSignedChar(PyObject* x) {
    const signed char neg_one = (signed char)-1, const_zero = 0;
    const int is_unsigned = neg_one > const_zero;
    if (sizeof(signed char) < sizeof(long)) {
        long val = __Pyx_PyInt_AsLong(x);
        if (unlikely(val != (long)(signed char)val)) {
            if (!unlikely(val == -1 && PyErr_Occurred())) {
                PyErr_SetString(PyExc_OverflowError,
                    (is_unsigned && unlikely(val < 0)) ?
                    "can't convert negative value to signed char" :
                    "value too large to convert to signed char");
            }
            return (signed char)-1;
        }
        return (signed char)val;
    }
    return (signed char)__Pyx_PyInt_AsSignedLong(x);
}

static CYTHON_INLINE signed short __Pyx_PyInt_AsSignedShort(PyObject* x) {
    const signed short neg_one = (signed short)-1, const_zero = 0;
    const int is_unsigned = neg_one > const_zero;
    if (sizeof(signed short) < sizeof(long)) {
        long val = __Pyx_PyInt_AsLong(x);
        if (unlikely(val != (long)(signed short)val)) {
            if (!unlikely(val == -1 && PyErr_Occurred())) {
                PyErr_SetString(PyExc_OverflowError,
                    (is_unsigned && unlikely(val < 0)) ?
                    "can't convert negative value to signed short" :
                    "value too large to convert to signed short");
            }
            return (signed short)-1;
        }
        return (signed short)val;
    }
    return (signed short)__Pyx_PyInt_AsSignedLong(x);
}

static CYTHON_INLINE signed int __Pyx_PyInt_AsSignedInt(PyObject* x) {
    const signed int neg_one = (signed int)-1, const_zero = 0;
    const int is_unsigned = neg_one > const_zero;
    if (sizeof(signed int) < sizeof(long)) {
        long val = __Pyx_PyInt_AsLong(x);
        if (unlikely(val != (long)(signed int)val)) {
            if (!unlikely(val == -1 && PyErr_Occurred())) {
                PyErr_SetString(PyExc_OverflowError,
                    (is_unsigned && unlikely(val < 0)) ?
                    "can't convert negative value to signed int" :
                    "value too large to convert to signed int");
            }
            return (signed int)-1;
        }
        return (signed int)val;
    }
    return (signed int)__Pyx_PyInt_AsSignedLong(x);
}

static CYTHON_INLINE int __Pyx_PyInt_AsLongDouble(PyObject* x) {
    const int neg_one = (int)-1, const_zero = 0;
    const int is_unsigned = neg_one > const_zero;
    if (sizeof(int) < sizeof(long)) {
        long val = __Pyx_PyInt_AsLong(x);
        if (unlikely(val != (long)(int)val)) {
            if (!unlikely(val == -1 && PyErr_Occurred())) {
                PyErr_SetString(PyExc_OverflowError,
                    (is_unsigned && unlikely(val < 0)) ?
                    "can't convert negative value to int" :
                    "value too large to convert to int");
            }
            return (int)-1;
        }
        return (int)val;
    }
    return (int)__Pyx_PyInt_AsLong(x);
}

static CYTHON_INLINE unsigned long __Pyx_PyInt_AsUnsignedLong(PyObject* x) {
    const unsigned long neg_one = (unsigned long)-1, const_zero = 0;
    const int is_unsigned = neg_one > const_zero;
#if PY_VERSION_HEX < 0x03000000
    if (likely(PyInt_Check(x))) {
        long val = PyInt_AS_LONG(x);
        if (is_unsigned && unlikely(val < 0)) {
            PyErr_SetString(PyExc_OverflowError,
                            "can't convert negative value to unsigned long");
            return (unsigned long)-1;
        }
        return (unsigned long)val;
    } else
#endif
    if (likely(PyLong_Check(x))) {
        if (is_unsigned) {
            if (unlikely(Py_SIZE(x) < 0)) {
                PyErr_SetString(PyExc_OverflowError,
                                "can't convert negative value to unsigned long");
                return (unsigned long)-1;
            }
            return PyLong_AsUnsignedLong(x);
        } else {
            return PyLong_AsLong(x);
        }
    } else {
        unsigned long val;
        PyObject *tmp = __Pyx_PyNumber_Int(x);
        if (!tmp) return (unsigned long)-1;
        val = __Pyx_PyInt_AsUnsignedLong(tmp);
        Py_DECREF(tmp);
        return val;
    }
}

static CYTHON_INLINE unsigned PY_LONG_LONG __Pyx_PyInt_AsUnsignedLongLong(PyObject* x) {
    const unsigned PY_LONG_LONG neg_one = (unsigned PY_LONG_LONG)-1, const_zero = 0;
    const int is_unsigned = neg_one > const_zero;
#if PY_VERSION_HEX < 0x03000000
    if (likely(PyInt_Check(x))) {
        long val = PyInt_AS_LONG(x);
        if (is_unsigned && unlikely(val < 0)) {
            PyErr_SetString(PyExc_OverflowError,
                            "can't convert negative value to unsigned PY_LONG_LONG");
            return (unsigned PY_LONG_LONG)-1;
        }
        return (unsigned PY_LONG_LONG)val;
    } else
#endif
    if (likely(PyLong_Check(x))) {
        if (is_unsigned) {
            if (unlikely(Py_SIZE(x) < 0)) {
                PyErr_SetString(PyExc_OverflowError,
                                "can't convert negative value to unsigned PY_LONG_LONG");
                return (unsigned PY_LONG_LONG)-1;
            }
            return PyLong_AsUnsignedLongLong(x);
        } else {
            return PyLong_AsLongLong(x);
        }
    } else {
        unsigned PY_LONG_LONG val;
        PyObject *tmp = __Pyx_PyNumber_Int(x);
        if (!tmp) return (unsigned PY_LONG_LONG)-1;
        val = __Pyx_PyInt_AsUnsignedLongLong(tmp);
        Py_DECREF(tmp);
        return val;
    }
}

static CYTHON_INLINE long __Pyx_PyInt_AsLong(PyObject* x) {
    const long neg_one = (long)-1, const_zero = 0;
    const int is_unsigned = neg_one > const_zero;
#if PY_VERSION_HEX < 0x03000000
    if (likely(PyInt_Check(x))) {
        long val = PyInt_AS_LONG(x);
        if (is_unsigned && unlikely(val < 0)) {
            PyErr_SetString(PyExc_OverflowError,
                            "can't convert negative value to long");
            return (long)-1;
        }
        return (long)val;
    } else
#endif
    if (likely(PyLong_Check(x))) {
        if (is_unsigned) {
            if (unlikely(Py_SIZE(x) < 0)) {
                PyErr_SetString(PyExc_OverflowError,
                                "can't convert negative value to long");
                return (long)-1;
            }
            return PyLong_AsUnsignedLong(x);
        } else {
            return PyLong_AsLong(x);
        }
    } else {
        long val;
        PyObject *tmp = __Pyx_PyNumber_Int(x);
        if (!tmp) return (long)-1;
        val = __Pyx_PyInt_AsLong(tmp);
        Py_DECREF(tmp);
        return val;
    }
}

static CYTHON_INLINE PY_LONG_LONG __Pyx_PyInt_AsLongLong(PyObject* x) {
    const PY_LONG_LONG neg_one = (PY_LONG_LONG)-1, const_zero = 0;
    const int is_unsigned = neg_one > const_zero;
#if PY_VERSION_HEX < 0x03000000
    if (likely(PyInt_Check(x))) {
        long val = PyInt_AS_LONG(x);
        if (is_unsigned && unlikely(val < 0)) {
            PyErr_SetString(PyExc_OverflowError,
                            "can't convert negative value to PY_LONG_LONG");
            return (PY_LONG_LONG)-1;
        }
        return (PY_LONG_LONG)val;
    } else
#endif
    if (likely(PyLong_Check(x))) {
        if (is_unsigned) {
            if (unlikely(Py_SIZE(x) < 0)) {
                PyErr_SetString(PyExc_OverflowError,
                                "can't convert negative value to PY_LONG_LONG");
                return (PY_LONG_LONG)-1;
            }
            return PyLong_AsUnsignedLongLong(x);
        } else {
            return PyLong_AsLongLong(x);
        }
    } else {
        PY_LONG_LONG val;
        PyObject *tmp = __Pyx_PyNumber_Int(x);
        if (!tmp) return (PY_LONG_LONG)-1;
        val = __Pyx_PyInt_AsLongLong(tmp);
        Py_DECREF(tmp);
        return val;
    }
}

static CYTHON_INLINE signed long __Pyx_PyInt_AsSignedLong(PyObject* x) {
    const signed long neg_one = (signed long)-1, const_zero = 0;
    const int is_unsigned = neg_one > const_zero;
#if PY_VERSION_HEX < 0x03000000
    if (likely(PyInt_Check(x))) {
        long val = PyInt_AS_LONG(x);
        if (is_unsigned && unlikely(val < 0)) {
            PyErr_SetString(PyExc_OverflowError,
                            "can't convert negative value to signed long");
            return (signed long)-1;
        }
        return (signed long)val;
    } else
#endif
    if (likely(PyLong_Check(x))) {
        if (is_unsigned) {
            if (unlikely(Py_SIZE(x) < 0)) {
                PyErr_SetString(PyExc_OverflowError,
                                "can't convert negative value to signed long");
                return (signed long)-1;
            }
            return PyLong_AsUnsignedLong(x);
        } else {
            return PyLong_AsLong(x);
        }
    } else {
        signed long val;
        PyObject *tmp = __Pyx_PyNumber_Int(x);
        if (!tmp) return (signed long)-1;
        val = __Pyx_PyInt_AsSignedLong(tmp);
        Py_DECREF(tmp);
        return val;
    }
}

static CYTHON_INLINE signed PY_LONG_LONG __Pyx_PyInt_AsSignedLongLong(PyObject* x) {
    const signed PY_LONG_LONG neg_one = (signed PY_LONG_LONG)-1, const_zero = 0;
    const int is_unsigned = neg_one > const_zero;
#if PY_VERSION_HEX < 0x03000000
    if (likely(PyInt_Check(x))) {
        long val = PyInt_AS_LONG(x);
        if (is_unsigned && unlikely(val < 0)) {
            PyErr_SetString(PyExc_OverflowError,
                            "can't convert negative value to signed PY_LONG_LONG");
            return (signed PY_LONG_LONG)-1;
        }
        return (signed PY_LONG_LONG)val;
    } else
#endif
    if (likely(PyLong_Check(x))) {
        if (is_unsigned) {
            if (unlikely(Py_SIZE(x) < 0)) {
                PyErr_SetString(PyExc_OverflowError,
                                "can't convert negative value to signed PY_LONG_LONG");
                return (signed PY_LONG_LONG)-1;
            }
            return PyLong_AsUnsignedLongLong(x);
        } else {
            return PyLong_AsLongLong(x);
        }
    } else {
        signed PY_LONG_LONG val;
        PyObject *tmp = __Pyx_PyNumber_Int(x);
        if (!tmp) return (signed PY_LONG_LONG)-1;
        val = __Pyx_PyInt_AsSignedLongLong(tmp);
        Py_DECREF(tmp);
        return val;
    }
}

static int __Pyx_SetVtable(PyObject *dict, void *vtable) {
#if PY_VERSION_HEX >= 0x02070000 && !(PY_MAJOR_VERSION==3&&PY_MINOR_VERSION==0)
    PyObject *ob = PyCapsule_New(vtable, 0, 0);
#else
    PyObject *ob = PyCObject_FromVoidPtr(vtable, 0);
#endif
    if (!ob)
        goto bad;
    if (PyDict_SetItemString(dict, "__pyx_vtable__", ob) < 0)
        goto bad;
    Py_DECREF(ob);
    return 0;
bad:
    Py_XDECREF(ob);
    return -1;
}

#include "compile.h"
#include "frameobject.h"
#include "traceback.h"

static void __Pyx_AddTraceback(const char *funcname) {
    PyObject *py_srcfile = 0;
    PyObject *py_funcname = 0;
    PyObject *py_globals = 0;
    PyCodeObject *py_code = 0;
    PyFrameObject *py_frame = 0;

    #if PY_MAJOR_VERSION < 3
    py_srcfile = PyString_FromString(__pyx_filename);
    #else
    py_srcfile = PyUnicode_FromString(__pyx_filename);
    #endif
    if (!py_srcfile) goto bad;
    if (__pyx_clineno) {
        #if PY_MAJOR_VERSION < 3
        py_funcname = PyString_FromFormat( "%s (%s:%d)", funcname, __pyx_cfilenm, __pyx_clineno);
        #else
        py_funcname = PyUnicode_FromFormat( "%s (%s:%d)", funcname, __pyx_cfilenm, __pyx_clineno);
        #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_globals = PyModule_GetDict(__pyx_m);
    if (!py_globals) goto bad;
    py_code = PyCode_New(
        0,            /*int argcount,*/
        #if PY_MAJOR_VERSION >= 3
        0,            /*int kwonlyargcount,*/
        #endif
        0,            /*int nlocals,*/
        0,            /*int stacksize,*/
        0,            /*int flags,*/
        __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,*/
        __pyx_lineno,   /*int firstlineno,*/
        __pyx_empty_bytes  /*PyObject *lnotab*/
    );
    if (!py_code) goto bad;
    py_frame = PyFrame_New(
        PyThreadState_GET(), /*PyThreadState *tstate,*/
        py_code,             /*PyCodeObject *code,*/
        py_globals,          /*PyObject *globals,*/
        0                    /*PyObject *locals*/
    );
    if (!py_frame) goto bad;
    py_frame->f_lineno = __pyx_lineno;
    PyTraceBack_Here(py_frame);
bad:
    Py_XDECREF(py_srcfile);
    Py_XDECREF(py_funcname);
    Py_XDECREF(py_code);
    Py_XDECREF(py_frame);
}

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  /* Python 3+ has unicode identifiers */
        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;
}

/* Type Conversion Functions */

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_Int(PyObject* x) {
  PyNumberMethods *m;
  const char *name = NULL;
  PyObject *res = NULL;
#if PY_VERSION_HEX < 0x03000000
  if (PyInt_Check(x) || PyLong_Check(x))
#else
  if (PyLong_Check(x))
#endif
    return Py_INCREF(x), x;
  m = Py_TYPE(x)->tp_as_number;
#if PY_VERSION_HEX < 0x03000000
  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
  if (res) {
#if PY_VERSION_HEX < 0x03000000
    if (!PyInt_Check(res) && !PyLong_Check(res)) {
#else
    if (!PyLong_Check(res)) {
#endif
      PyErr_Format(PyExc_TypeError,
                   "__%s__ returned non-%s (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 = 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) {
#if PY_VERSION_HEX < 0x02050000
   if (ival <= LONG_MAX)
       return PyInt_FromLong((long)ival);
   else {
       unsigned char *bytes = (unsigned char *) &ival;
       int one = 1; int little = (int)*(unsigned char*)&one;
       return _PyLong_FromByteArray(bytes, sizeof(size_t), little, 0);
   }
#else
   return PyInt_FromSize_t(ival);
#endif
}

static CYTHON_INLINE size_t __Pyx_PyInt_AsSize_t(PyObject* x) {
   unsigned PY_LONG_LONG val = __Pyx_PyInt_AsUnsignedLongLong(x);
   if (unlikely(val == (unsigned PY_LONG_LONG)-1 && PyErr_Occurred())) {
       return (size_t)-1;
   } else if (unlikely(val != (unsigned PY_LONG_LONG)(size_t)val)) {
       PyErr_SetString(PyExc_OverflowError,
                       "value too large to convert to size_t");
       return (size_t)-1;
   }
   return (size_t)val;
}


#endif /* Py_PYTHON_H */
