Fortran Wiki
erf

Description

erf(x) computes the error function of x, defined as

Standard

Fortran 2008 and later

Class

Elemental function

Syntax

result = erf(x)

Arguments

• x - The type shall be real.

Return value

The return value is of type real, of the same kind as x and lies in the range $-1\le \mathrm{erf}(x)\le 1$.

Example

program test_erf
  real(8) :: x = 0.17_8
  x = erf(x)
end program test_erf