2: static char help[] = "Tests MatSetValues() for column oriented storage.\n\n";

 4:  #include petscmat.h

  8: int main(int argc,char **args)
  9: {
 10:   Mat            C;
 11:   PetscInt       i,n = 5,midx[3],nidx[2];
 13:   PetscTruth     flg;
 14:   PetscScalar    v[6];

 16:   PetscInitialize(&argc,&args,(char *)0,help);
 17:   PetscOptionsGetInt(PETSC_NULL,"-n",&n,PETSC_NULL);

 19:   MatCreate(PETSC_COMM_WORLD,&C);
 20:   MatSetSizes(C,PETSC_DECIDE,PETSC_DECIDE,n,n);
 21:   MatSetFromOptions(C);

 23:   PetscOptionsHasName(PETSC_NULL,"-column_oriented",&flg);
 24:   if (flg) {MatSetOption(C,MAT_COLUMN_ORIENTED);}
 25:   for (i=0; i<6; i++) v[i] = (PetscReal)i;
 26:   midx[0] = 0; midx[1] = 2; midx[2] = 3;
 27:   nidx[0] = 1; nidx[1] = 3;
 28:   MatSetValues(C,3,midx,2,nidx,v,ADD_VALUES);
 29:   MatAssemblyBegin(C,MAT_FINAL_ASSEMBLY);
 30:   MatAssemblyEnd(C,MAT_FINAL_ASSEMBLY);

 32:   MatView(C,PETSC_VIEWER_STDOUT_WORLD);

 34:   MatDestroy(C);
 35:   PetscFinalize();
 36:   return 0;
 37: }

 39: