.. module:: math :synopsis: mathematical functions
|see_cpython_module| :mod:`python:math`.
The math module provides some basic mathematical functions for
working with floating-point numbers.
Note: On the pyboard, floating-point numbers have 32-bit precision.
Availability: not available on WiPy. Floating point support required for this module.
.. function:: acos(x) Return the inverse cosine of ``x``.
.. function:: acosh(x) Return the inverse hyperbolic cosine of ``x``.
.. function:: asin(x) Return the inverse sine of ``x``.
.. function:: asinh(x) Return the inverse hyperbolic sine of ``x``.
.. function:: atan(x) Return the inverse tangent of ``x``.
.. function:: atan2(y, x) Return the principal value of the inverse tangent of ``y/x``.
.. function:: atanh(x) Return the inverse hyperbolic tangent of ``x``.
.. function:: ceil(x) Return an integer, being ``x`` rounded towards positive infinity.
.. function:: copysign(x, y) Return ``x`` with the sign of ``y``.
.. function:: cos(x) Return the cosine of ``x``.
.. function:: cosh(x) Return the hyperbolic cosine of ``x``.
.. function:: degrees(x) Return radians ``x`` converted to degrees.
.. function:: erf(x) Return the error function of ``x``.
.. function:: erfc(x) Return the complementary error function of ``x``.
.. function:: exp(x) Return the exponential of ``x``.
.. function:: expm1(x) Return ``exp(x) - 1``.
.. function:: fabs(x) Return the absolute value of ``x``.
.. function:: floor(x) Return an integer, being ``x`` rounded towards negative infinity.
.. function:: fmod(x, y) Return the remainder of ``x/y``.
.. function:: frexp(x) Decomposes a floating-point number into its mantissa and exponent. The returned value is the tuple ``(m, e)`` such that ``x == m * 2**e`` exactly. If ``x == 0`` then the function returns ``(0.0, 0)``, otherwise the relation ``0.5 <= abs(m) < 1`` holds.
.. function:: gamma(x) Return the gamma function of ``x``.
.. function:: isfinite(x) Return ``True`` if ``x`` is finite.
.. function:: isinf(x) Return ``True`` if ``x`` is infinite.
.. function:: isnan(x) Return ``True`` if ``x`` is not-a-number
.. function:: ldexp(x, exp) Return ``x * (2**exp)``.
.. function:: lgamma(x) Return the natural logarithm of the gamma function of ``x``.
.. function:: log(x) Return the natural logarithm of ``x``.
.. function:: log10(x) Return the base-10 logarithm of ``x``.
.. function:: log2(x) Return the base-2 logarithm of ``x``.
.. function:: modf(x) Return a tuple of two floats, being the fractional and integral parts of ``x``. Both return values have the same sign as ``x``.
.. function:: pow(x, y) Returns ``x`` to the power of ``y``.
.. function:: radians(x) Return degrees ``x`` converted to radians.
.. function:: sin(x) Return the sine of ``x``.
.. function:: sinh(x) Return the hyperbolic sine of ``x``.
.. function:: sqrt(x) Return the square root of ``x``.
.. function:: tan(x) Return the tangent of ``x``.
.. function:: tanh(x) Return the hyperbolic tangent of ``x``.
.. function:: trunc(x) Return an integer, being ``x`` rounded towards 0.
.. data:: e base of the natural logarithm
.. data:: pi the ratio of a circle's circumference to its diameter
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