Lahey/GNU Fortran

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8.40 C_F_PROCPOINTER — Convert C into Fortran procedure pointer

Description:
C_F_PROCPOINTER(CPTR, FPTR) Assign the target of the C function pointer CPTR to the Fortran procedure pointer FPTR.
Standard:
Fortran 2003 and later
Class:
Subroutine
Syntax:
CALL C_F_PROCPOINTER(cptr, fptr)
Arguments:

CPTR scalar of the type C_FUNPTR. It is INTENT(IN).
FPTR procedure pointer interoperable with cptr. It is INTENT(OUT).

Example:
          program main
            use iso_c_binding
            implicit none
            abstract interface
              function func(a)
                import :: c_float
                real(c_float), intent(in) :: a
                real(c_float) :: func
              end function
            end interface
            interface
               function getIterFunc() bind(c,name="getIterFunc")
                 import :: c_funptr
                 type(c_funptr) :: getIterFunc
               end function
            end interface
            type(c_funptr) :: cfunptr
            procedure(func), pointer :: myFunc
            cfunptr = getIterFunc()
            call c_f_procpointer(cfunptr, myFunc)
          end program main
     

See also:
C_LOC, C_F_POINTER