7.36 C_LOC — Obtain the C address of an object

Description:

C_LOC(X) determines the C address of the argument.

Standard:

Fortran 2003 and later

Class:

Inquiry function

Syntax:

RESULT = C_LOC(X)

Arguments:

X	Associated scalar pointer or interoperable scalar or allocated allocatable variable with TARGET attribute.

Return value:

The return value is of type C_PTR and contains the C address of the argument.

Example:

          subroutine association_test(a,b)
            use iso_c_binding, only: c_associated, c_loc, c_ptr
            implicit none
            real, pointer :: a
            type(c_ptr) :: b
            if(c_associated(b, c_loc(a))) &
               stop 'b and a do not point to same target'
          end subroutine association_test
     

See also:

C_ASSOCIATED, C_FUNLOC, C_F_POINTER, C_F_PROCPOINTER