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# mode: run
from libc.math cimport (M_E, M_LOG2E, M_LOG10E, M_LN2, M_LN10, M_PI, M_PI_2,
M_PI_4, M_1_PI, M_2_PI, M_2_SQRTPI, M_SQRT2, M_SQRT1_2)
from libc.math cimport (acos, asin, atan, atan2, cos, modf, sin, sinf, sinl,
tan, cosh, sinh, tanh, acosh, asinh, atanh, exp, log, log10, pow, sqrt)
cimport libc.math as libc_math
def test_pi():
"""
>>> import math
>>> test_pi() == math.pi
True
"""
return M_PI
def test_renamed_constants(math):
"""
>>> import math
>>> test_renamed_constants(math)
"""
assert libc_math.M_E == libc_math.e == math.e
assert libc_math.M_PI == libc_math.pi == math.pi
def test_sin(x):
"""
>>> test_sin(0)
0.0
>>> from math import sin
>>> [sin(k) == test_sin(k) for k in range(10)]
[True, True, True, True, True, True, True, True, True, True]
"""
return sin(x)
def test_sin_kwarg(x):
"""
>>> test_sin_kwarg(0)
0.0
"""
return sin(x=x)
def test_modf(x):
"""
>>> test_modf(2.5)
(0.5, 2.0)
"""
cdef double i
cdef double f = modf(x, &i)
return (f, i)
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