ERFC_SCALED intrinsic function
Standard: F77 F90 F95 F2003 F2008 Example Program

X : Real;

Result : Same type and kind as X.
The value of the result is an approximation to the exponentially-scaled “complementary error function” of X; that is ERFC(X) scaled by eX**2. Like many intrinsic functions, this is elemental; the result has the same shape as X, with the operation being applied elementwise.

This function converges to 0.0, but only slowly.

ERF intrinsic function, ERFC intrinsic function.