9.51 C_FUNLOC — Obtain the C address of a procedure

Description:
C_FUNLOC(x) determines the C address of the argument.
Standard:
Fortran 2003 and later
Class:
Inquiry function
Syntax:
RESULT = C_FUNLOC(x)
Arguments:
x Interoperable function or pointer to such function.
Return value:
The return value is of type C_FUNPTR and contains the C address of the argument.
Example:
module x
  use iso_c_binding
  implicit none
contains
  subroutine sub(a) bind(c)
    real(c_float) :: a
    a = sqrt(a)+5.0
  end subroutine sub
end module x
program main
  use iso_c_binding
  use x
  implicit none
  interface
    subroutine my_routine(p) bind(c,name='myC_func')
      import :: c_funptr
      type(c_funptr), intent(in) :: p
    end subroutine
  end interface
  call my_routine(c_funloc(sub))
end program main
See also:
C_ASSOCIATED, C_LOC, C_F_POINTER, C_F_PROCPOINTER

© Free Software Foundation
Licensed under the GNU Free Documentation License, Version 1.3.
https://gcc.gnu.org/onlinedocs/gcc-5.4.0/gfortran/C_005fFUNLOC.html