# 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, sin, 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)