SYNTAX

C Syntax

int MPI_Comm_free_keyval(int* comm_keyval)

Fortran Syntax

USE MPI
! or the older form: INCLUDE 'mpif.h'
MPI_COMM_FREE_KEYVAL(COMM_KEYVAL, IERROR)
    INTEGER COMM_KEYVAL, IERROR

Fortran 2008 Syntax

USE mpi_f08
MPI_Comm_free_keyval(comm_keyval, ierror)
    INTEGER, INTENT(INOUT) :: comm_keyval
    INTEGER, OPTIONAL, INTENT(OUT) :: ierror