DMProjectFunctionLocal#

This projects the given function into the function space provided by a DM, putting the coefficients in a local vector.

Synopsis#

#include "petscdm.h"          
#include "petscdmlabel.h"     
#include "petscds.h"     
PetscErrorCode DMProjectFunctionLocal(DM dm, PetscReal time, PetscErrorCode (**funcs)(PetscInt dim, PetscReal time, const PetscReal x[], PetscInt Nc, PetscScalar *u, void *ctx), void **ctxs, InsertMode mode, Vec localX)

Not Collective

Input Parameters#

dm - The DM
time - The time
funcs - The coordinate functions to evaluate, one per field
ctxs - Optional array of contexts to pass to each coordinate function. ctxs itself may be null.
mode - The insertion mode for values

Output Parameter#

localX - vector

Calling sequence of `funcs`#

dim - The spatial dimension
time - The current timestep
x - The coordinates
Nc - The number of components
u - The output field values
ctx - optional user-defined function context

Developer Notes#

This API is specific to only particular usage of DM

The notes need to provide some information about what has to be provided to the DM to be able to perform the computation.

Level#

developer

Location#

src/dm/interface/dm.c

Examples#

src/snes/tutorials/ex12.c
src/ts/tutorials/ex47.c
src/snes/tutorials/ex77.c
src/dm/field/tutorials/ex1.c

Implementations#

DMProjectFunctionLocal_pforest(DM dm, PetscReal time, PetscErrorCode (**funcs)() in src/dm/impls/forest/p4est/pforest.h
DMProjectFunctionLocal_Plex(DM dm, PetscReal time, PetscErrorCode (**funcs)() in src/dm/impls/plex/plexproject.c

Index of all DM routines
Table of Contents for all manual pages
Index of all manual pages