64 lines
1.3 KiB
ReStructuredText
64 lines
1.3 KiB
ReStructuredText
:mod:`cmath` -- mathematical functions for complex numbers
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==========================================================
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.. module:: cmath
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:synopsis: mathematical functions for complex numbers
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|see_cpython_module| :mod:`python:cmath`.
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The ``cmath`` module provides some basic mathematical functions for
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working with complex numbers.
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Availability: not available on WiPy and ESP8266. Floating point support
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required for this module.
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Functions
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---------
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.. function:: cos(z)
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Return the cosine of ``z``.
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.. function:: exp(z)
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Return the exponential of ``z``.
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.. function:: log(z)
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Return the natural logarithm of ``z``. The branch cut is along the negative real axis.
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.. function:: log10(z)
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Return the base-10 logarithm of ``z``. The branch cut is along the negative real axis.
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.. function:: phase(z)
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Returns the phase of the number ``z``, in the range (-pi, +pi].
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.. function:: polar(z)
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Returns, as a tuple, the polar form of ``z``.
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.. function:: rect(r, phi)
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Returns the complex number with modulus ``r`` and phase ``phi``.
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.. function:: sin(z)
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Return the sine of ``z``.
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.. function:: sqrt(z)
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Return the square-root of ``z``.
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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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