Mathematical functions with automatic domain#

Note

numpy.emath is a preferred alias fornumpy.lib.scimath,available afternumpy is imported.

Wrapper functions to more user-friendly calling of certain math functionswhose output data-type is different than the input data-type in certaindomains of the input.

For example, for functions likelog with branch cuts, the versions in thismodule provide the mathematically valid answers in the complex plane:

>>>importmath>>>np.emath.log(-math.exp(1))==(1+1j*math.pi)True

Similarly,sqrt, other base logarithms,power and trig functionsare correctly handled. See their respective docstrings for specific examples.

Functions#

arccos(x)

Compute the inverse cosine of x.

arcsin(x)

Compute the inverse sine of x.

arctanh(x)

Compute the inverse hyperbolic tangent ofx.

log(x)

Compute the natural logarithm ofx.

log2(x)

Compute the logarithm base 2 ofx.

logn(n, x)

Take log base n of x.

log10(x)

Compute the logarithm base 10 ofx.

power(x, p)

Return x to the power p, (x**p).

sqrt(x)

Compute the square root of x.

On this page