mars.tensor.special.erfinv

mars.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 have multi-value. 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]

Returns

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

Return type

ndarray

See also

erf

Error function of a complex argument

erfc

Complementary error function, 1 - erf(x)

erfcinv

Inverse of the complementary error function