maxframe.tensor.special.erfinv

maxframe.tensor.special.erfinv(x, out=None, where=None, **kwargs)

Inverse of the error function.

Computes the inverse of the error function.

In the complex domain, there is no unique complex number w satisfying erf(w)=z. This indicates a true inverse function would be multivalued. When the domain restricts to the real, -1 < x < 1, there is a unique real number satisfying erf(erfinv(x)) = x.

Parameters:

• y (ndarray) – Argument at which to evaluate. Domain: [-1, 1]

• out (ndarray, optional) – Optional output array for the function values

Returns:

erfinv – The inverse of erf of y, element-wise

Return type:

scalar or ndarray

See also

erf

Error function of a complex argument

erfc

Complementary error function, 1 - erf(x)

erfcinv

Inverse of the complementary error function

Notes

This function wraps the erf_inv routine from the Boost Math C++ library [1].

References

[1]

The Boost Developers. “Boost C++ Libraries”. https://www.boost.org/.