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/GNU Fortran 7

9.95 ERF — Error function

Description:

ERF(X) computes the error function of X.

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 \leq erf (x) \leq 1 .

Example:
program test_erf
  real(8) :: x = 0.17_8
  x = erf(x)
end program test_erf
Specific names:
Name Argument Return type Standard
DERF(X) REAL(8) X REAL(8) GNU extension

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Licensed under the GNU Free Documentation License, Version 1.3.
https://gcc.gnu.org/onlinedocs/gcc-7.1.0/gfortran/ERF.html