1: #include <petsc/private/dmdaimpl.h>

  3: PetscErrorCode DMSetUp_DA(DM da)
  4: {
  5:   DM_DA *dd = (DM_DA *)da->data;

  7:   PetscFunctionBegin;
  9:   PetscCheck(dd->w >= 1, PetscObjectComm((PetscObject)da), PETSC_ERR_ARG_OUTOFRANGE, "Must have 1 or more degrees of freedom per node: %" PetscInt_FMT, dd->w);
 10:   PetscCheck(dd->s >= 0, PetscObjectComm((PetscObject)da), PETSC_ERR_ARG_OUTOFRANGE, "Stencil width cannot be negative: %" PetscInt_FMT, dd->s);

 12:   PetscCall(PetscCalloc1(dd->w + 1, &dd->fieldname));
 13:   PetscCall(PetscCalloc1(da->dim, &dd->coordinatename));
 14:   if (da->dim == 1) {
 15:     PetscCall(DMSetUp_DA_1D(da));
 16:   } else if (da->dim == 2) {
 17:     PetscCall(DMSetUp_DA_2D(da));
 18:   } else if (da->dim == 3) {
 19:     PetscCall(DMSetUp_DA_3D(da));
 20:   } else SETERRQ(PetscObjectComm((PetscObject)da), PETSC_ERR_SUP, "DMs only supported for 1, 2, and 3d");
 21:   PetscCall(DMViewFromOptions(da, NULL, "-dm_view"));
 22:   PetscFunctionReturn(PETSC_SUCCESS);
 23: }