Actual source code: ex5.c

  2: static char help[] = "Tests ISLocalToGlobalMappingGetInfo.()\n\n";

 4:  #include petscis.h

  8: int main(int argc,char **argv)
  9: {
 10:   PetscErrorCode         ierr;
 11:   PetscMPIInt            size,rank;
 12:   PetscInt               nlocal,local[5],nneigh,*neigh,**ineigh,*numneigh;
 13:   ISLocalToGlobalMapping mapping;


 16:   PetscInitialize(&argc,&argv,(char*)0,help);
 17:   MPI_Comm_size(PETSC_COMM_WORLD,&size);
 18:   if (size != 3) SETERRQ(1,"Must run with three processors");
 19:   MPI_Comm_rank(PETSC_COMM_WORLD,&rank);
 20:   if (!rank) {
 21:     nlocal = 4; local[0] = 0; local[1] = 3; local[2] = 2; local[3] = 1;
 22:   } else if (rank == 1) {
 23:     nlocal = 4; local[0] = 3; local[1] = 5; local[2] = 4; local[3] = 2;
 24:   } else {
 25:     nlocal = 4; local[0] = 7; local[1] = 6; local[2] = 5; local[3] = 3;
 26:   }
 27:   ISLocalToGlobalMappingCreate(PETSC_COMM_WORLD,nlocal,local,&mapping);
 28:   ISLocalToGlobalMappingGetInfo(mapping,&nneigh,&neigh,&numneigh,&ineigh);
 29:   ISLocalToGlobalMappingRestoreInfo(mapping,&nneigh,&neigh,&numneigh,&ineigh);
 30:   ISLocalToGlobalMappingDestroy(mapping);
 31:   PetscFinalize();
 32:   return 0;
 33: }
 34: