1 #pragma once 2 3 #include <petscdm.h> 4 5 PETSC_EXTERN PetscErrorCode DMCreate_Product(DM); 6 PETSC_EXTERN PetscErrorCode DMProductGetDM(DM, PetscInt, DM *); 7 PETSC_EXTERN PetscErrorCode DMProductSetDimensionIndex(DM, PetscInt, PetscInt); 8 PETSC_EXTERN PetscErrorCode DMProductSetDM(DM, PetscInt, DM); 9