isnan timings

isnan_timings.pyx

from libc.math cimport isnan as c_isnan
from math import isnan as math_isnan
from cmath import isnan as cmath_isnan
from numpy import isnan as numpy_isnan

cdef extern from "numpy/npy_math.h":
    bint npy_isnan(double x)

def time_c_isnan(double value, long N=1000000):
    cdef bint res = 0
    for _ in range(N):
        res |= c_isnan(value)
    return res

def time_npy_isnan(double value, long N=1000000):
    cdef bint res = 0
    for _ in range(N):
        res |= npy_isnan(value)
    return res

def time_math_isnan(value, long N=1000000):
    cdef bint res = 0
    for _ in range(N):
        res |= math_isnan(value)
    return res

def time_cmath_isnan(value, long N=1000000):
    cdef bint res = 0
    for _ in range(N):
        res |= cmath_isnan(value)
    return res

def time_numpy_isnan(value, long N=1000000):
    cdef bint res = 0
    for _ in range(N):
        res |= numpy_isnan(value)
    return res

# Use: %timeit time_X_isnan(np.nan)