Arguments: One numeric array, with all elements between -1 and 1 (exclusive)
Return Value: An array with the same organization as the input containing the value of the inverse error function evaluated at the each element of the input. The output format is double if the input is double, float otherwise.
The inverse error function is defined as inverf(y) = x iff y = erf(x)
This function does its computations by converting the input values and evaluating them with the inverse normal function, invnorm, which has a relative error of less than 1.2e-9 (in double precision).
inverf(y) = invnorm((y+1)/2)/√2
Return format is double if input is double; float otherwise.
If no arguments are input, inverf() prints its description, as shown below.