9.210. PRESENT
9.210 PRESENT — Determine whether an optional dummy argument is specified
- Description:
- Determines whether an optional dummy argument is present.
- Standard:
- Fortran 95 and later
- Class:
- Inquiry function
- Syntax:
-
RESULT = PRESENT(A)
- Arguments:
-
A May be of any type and may be a pointer, scalar or array value, or a dummy procedure. It shall be the name of an optional dummy argument accessible within the current subroutine or function. - Return value:
- Returns either
TRUE
if the optional argument A is present, orFALSE
otherwise. - Example:
-
PROGRAM test_present WRITE(*,*) f(), f(42) ! "F T" CONTAINS LOGICAL FUNCTION f(x) INTEGER, INTEN