docs/library/cmath.rst
cmath -- mathematical functions for complex numbers.. module:: cmath :synopsis: mathematical functions for complex numbers
|see_cpython_module| :mod:python:cmath.
The cmath module provides some basic mathematical functions for
working with complex numbers.
Availability: not available on WiPy and ESP8266. Floating point support required for this module.
.. function:: cos(z)
Return the cosine of z.
.. function:: exp(z)
Return the exponential of z.
.. function:: log(z)
Return the natural logarithm of z. The branch cut is along the negative real axis.
.. function:: log10(z)
Return the base-10 logarithm of z. The branch cut is along the negative real axis.
.. function:: phase(z)
Returns the phase of the number z, in the range (-pi, +pi].
.. function:: polar(z)
Returns, as a tuple, the polar form of z.
.. function:: rect(r, phi)
Returns the complex number with modulus r and phase phi.
.. function:: sin(z)
Return the sine of z.
.. function:: sqrt(z)
Return the square-root of z.
.. data:: e
base of the natural logarithm
.. data:: pi
the ratio of a circle's circumference to its diameter