#include "petscds.h" PetscErrorCode PetscDSUpdateBoundary(PetscDS ds, PetscInt bd, DMBoundaryConditionType type, const char name[], const char labelname[], PetscInt field, PetscInt numcomps, const PetscInt *comps, void (*bcFunc)(void), PetscInt numids, const PetscInt *ids, void *ctx)
| ds | - The PetscDS object | |
| bd | - The boundary condition number | |
| type | - The type of condition, e.g. DM_BC_ESSENTIAL/DM_BC_ESSENTIAL_FIELD (Dirichlet), or DM_BC_NATURAL (Neumann) | |
| name | - The BC name | |
| labelname | - The label defining constrained points | |
| field | - The field to constrain | |
| numcomps | - The number of constrained field components | |
| comps | - An array of constrained component numbers | |
| bcFunc | - A pointwise function giving boundary values | |
| numids | - The number of DMLabel ids for constrained points | |
| ids | - An array of ids for constrained points | |
| ctx | - An optional user context for bcFunc |
Note: The boundary condition number is the order in which it was registered. The user can get the number of boundary conditions from PetscDSGetNumBoundary().