Mathematical functions with automatic domain (numpy.emath
)ΒΆ
Note
numpy.emath
is a preferred alias for numpy.lib.scimath
,
available after numpy
is imported.
Wrapper functions to more user-friendly calling of certain math functions whose output data-type is different than the input data-type in certain domains of the input.
For example, for functions like log
with branch cuts, the versions in this
module provide the mathematically valid answers in the complex plane:
>>> import math
>>> from numpy.lib import scimath
>>> scimath.log(-math.exp(1)) == (1+1j*math.pi)
True
Similarly, sqrt
, other base logarithms, power
and trig functions are
correctly handled. See their respective docstrings for specific examples.