+001: # cython: language_level=3

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 002: 

+003: import numpy as np

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 004: cimport cython

 005: from libc cimport math

 006: 

+007: ctypedef double (*get_sample_t)(double x, double y0, double y1, double y2, double y3)

typedef double (*__pyx_t_5pippi_13interpolation_get_sample_t)(double, double, double, double, double);

 008: 

 009: @cython.boundscheck(False)

 010: @cython.wraparound(False)

+011: cdef double hermite_get_sample(double x, double y0, double y1, double y2, double y3):

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 012:     """ Taken from version #2 by James McCartney

 013:         http://musicdsp.org/showone.php?id=93

 014:     """

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+016:     cdef double c1 = 0.5 * (y2 - y0)

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+017:     cdef double c3 = 1.5 * (y1 - y2) + 0.5 * (y3 - y0)

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 019: 

+020:     return ((c3 * x + c2) * x + c1) * x + c0

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 021: 

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+025:     cdef get_sample_t get_sample = hermite_get_sample

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 041: 

 042: @cython.boundscheck(False)

 043: @cython.wraparound(False)

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