FNUM — File number function

Description

FNUM(UNIT) returns the POSIX file descriptor number corresponding to the open Fortran I/O unit UNIT.

Syntax

RESULT = FNUM(UNIT)

Arguments

UNIT The type shall be INTEGER.

Return value

The return value is of type INTEGER

Example


program test_fnum
  integer :: i
  open (unit=10, status = "scratch")
  i = fnum(10)
  print *, i
  close (10)
end program test_fnum

Standard

GNU extension

Class

Function