1! 2! Copyright (C) by Argonne National Laboratory 3! See COPYRIGHT in top-level directory 4! 5 6subroutine MPI_Cart_rank_f08(comm, coords, rank, ierror) 7 use, intrinsic :: iso_c_binding, only : c_int 8 use :: mpi_f08, only : MPI_Comm 9 use :: mpi_c_interface, only : c_Comm 10 use :: mpi_c_interface, only : MPIR_Cart_rank_c, MPIR_Cartdim_get_c 11 12 implicit none 13 14 type(MPI_Comm), intent(in) :: comm 15 integer, intent(in) :: coords(*) 16 integer, intent(out) :: rank 17 integer, optional, intent(out) :: ierror 18 19 integer(c_Comm) :: comm_c 20 integer(c_int), allocatable :: coords_c(:) 21 integer(c_int) :: rank_c 22 integer(c_int) :: ierror_c 23 integer(c_int) :: err, ndims ! To get length of assumed-size arrays 24 25 if (c_int == kind(0)) then 26 ierror_c = MPIR_Cart_rank_c(comm%MPI_VAL, coords, rank) 27 else 28 comm_c = comm%MPI_VAL 29 err = MPIR_Cartdim_get_c(comm_c, ndims) 30 coords_c = coords(1:ndims) 31 ierror_c = MPIR_Cart_rank_c(comm_c, coords_c, rank_c) 32 rank = rank_c 33 end if 34 35 if(present(ierror)) ierror = ierror_c 36 37end subroutine MPI_Cart_rank_f08 38