Actual source code: dareg.c

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

  3: extern PetscErrorCode DMSetUp_DA_1D(DM);
  4: extern PetscErrorCode DMSetUp_DA_2D(DM);
  5: extern PetscErrorCode DMSetUp_DA_3D(DM);

  7: PetscErrorCode DMSetUp_DA(DM da)
  8: {
  9:   DM_DA *dd = (DM_DA *)da->data;

 11:   PetscFunctionBegin;
 13:   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);
 14:   PetscCheck(dd->s >= 0, PetscObjectComm((PetscObject)da), PETSC_ERR_ARG_OUTOFRANGE, "Stencil width cannot be negative: %" PetscInt_FMT, dd->s);

 16:   PetscCall(PetscCalloc1(dd->w + 1, &dd->fieldname));
 17:   PetscCall(PetscCalloc1(da->dim, &dd->coordinatename));
 18:   if (da->dim == 1) {
 19:     PetscCall(DMSetUp_DA_1D(da));
 20:   } else if (da->dim == 2) {
 21:     PetscCall(DMSetUp_DA_2D(da));
 22:   } else if (da->dim == 3) {
 23:     PetscCall(DMSetUp_DA_3D(da));
 24:   } else SETERRQ(PetscObjectComm((PetscObject)da), PETSC_ERR_SUP, "DMs only supported for 1, 2, and 3d");
 25:   PetscCall(DMViewFromOptions(da, NULL, "-dm_view"));
 26:   PetscFunctionReturn(PETSC_SUCCESS);
 27: }