SYNTAX

C Syntax

int MPI_Group_size(MPI_Group group, int* size)

Fortran Syntax

USE MPI
! or the older form: INCLUDE 'mpif.h'
MPI_GROUP_SIZE(GROUP, SIZE, IERROR)
    INTEGER GROUP, SIZE, IERROR

Fortran 2008 Syntax

USE mpi_f08
MPI_Group_size(group, size, ierror)
    TYPE(MPI_Group), INTENT(IN) :: group
    INTEGER, INTENT(OUT) :: size
    INTEGER, OPTIONAL, INTENT(OUT) :: ierror