Actual source code: dareg.c

petsc-master 2019-09-18
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  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: {
 10:   DM_DA          *dd = (DM_DA*)da->data;

 14:   if (dd->w < 1) SETERRQ1(PetscObjectComm((PetscObject)da),PETSC_ERR_ARG_OUTOFRANGE,"Must have 1 or more degrees of freedom per node: %D",dd->w);
 15:   if (dd->s < 0) SETERRQ1(PetscObjectComm((PetscObject)da),PETSC_ERR_ARG_OUTOFRANGE,"Stencil width cannot be negative: %D",dd->s);

 17:   PetscCalloc1(dd->w+1,&dd->fieldname);
 18:   PetscCalloc1(da->dim,&dd->coordinatename);
 19:   if (da->dim == 1) {
 20:     DMSetUp_DA_1D(da);
 21:   } else if (da->dim == 2) {
 22:     DMSetUp_DA_2D(da);
 23:   } else if (da->dim == 3) {
 24:     DMSetUp_DA_3D(da);
 25:   } else SETERRQ(PetscObjectComm((PetscObject)da),PETSC_ERR_SUP,"DMs only supported for 1, 2, and 3d");
 26:   DMViewFromOptions(da,NULL,"-dm_view");
 27:   return(0);
 28: }