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