static char help[] = "Test DMStag explicit coordinate routines";

#include <petscdm.h>
#include <petscdmstag.h>

int main(int argc, char **argv)
{
  PetscInt  dim;
  PetscBool flg;
  DM        dm;
  Vec       coord;

  PetscFunctionBeginUser;
  PetscCall(PetscInitialize(&argc, &argv, NULL, help));
  PetscCall(PetscOptionsGetInt(NULL, NULL, "-dim", &dim, &flg));
  PetscCheck(flg, PETSC_COMM_WORLD, PETSC_ERR_ARG_WRONG, "Supply -dim option with value 1, 2, or 3");

  if (dim == 1) {
    PetscCall(DMStagCreate1d(PETSC_COMM_WORLD, DM_BOUNDARY_NONE, 2, 2, 3, DMSTAG_STENCIL_BOX, 1, NULL, &dm));
  } else if (dim == 2) {
    PetscCall(DMStagCreate2d(PETSC_COMM_WORLD, DM_BOUNDARY_NONE, DM_BOUNDARY_NONE, 2, 2, PETSC_DECIDE, PETSC_DECIDE, 2, 3, 4, DMSTAG_STENCIL_BOX, 1, NULL, NULL, &dm));
  } else if (dim == 3) {
    PetscCall(DMStagCreate3d(PETSC_COMM_WORLD, DM_BOUNDARY_NONE, DM_BOUNDARY_NONE, DM_BOUNDARY_NONE, 2, 2, 2, PETSC_DECIDE, PETSC_DECIDE, PETSC_DECIDE, 2, 3, 4, 5, DMSTAG_STENCIL_BOX, 1, NULL, NULL, NULL, &dm));
  } else SETERRQ(PETSC_COMM_WORLD, PETSC_ERR_ARG_WRONG, "Supply -dim option with value 1, 2, or 3");

  PetscCall(DMSetFromOptions(dm));
  PetscCall(DMSetUp(dm));
  PetscCall(DMView(dm, PETSC_VIEWER_STDOUT_WORLD));
  PetscCall(DMStagSetUniformCoordinatesExplicit(dm, 1.0, 3.0, 1.0, 3.0, 1.0, 3.0));
  PetscCall(DMGetCoordinates(dm, &coord));
  PetscCall(VecView(coord, PETSC_VIEWER_STDOUT_WORLD));
  PetscCall(DMDestroy(&dm));
  PetscCall(PetscFinalize());
  return 0;
}

/*TEST

   test:
      suffix: 1d_1
      nsize: 1
      args: -dim 1

   test:
      suffix: 1d_2
      nsize: 2
      args: -dim 1

   test:
      suffix: 2d_1
      nsize: 1
      args: -dim 2

   test:
      suffix: 2d_2
      nsize: 4
      args: -dim 2

   test:
      suffix: 3d_1
      nsize: 1
      args: -dim 3

   test:
      suffix: 3d_2
      nsize: 8
      args: -dim 3

TEST*/