This module provides an interface to a number of mathematical functions.
Not all functions are implemented on all platforms. In particular, the erf/1 and erfc/1 functions are not implemented on Windows.
A useful number.
A collection of math functions which return floats. Arguments are numbers.
Returns the error function of X, where
erf(X) = 2/sqrt(pi)*integral from 0 to X of exp(-t*t) dt.
erfc(X) returns 1.0 - erf(X), computed by methods that avoid cancellation for large X.
As these are the C library, the bugs are the same.