DMPlexComputeL2DiffVec#
This function computes the cellwise L_2 difference between a function u and an FEM interpolant solution u_h, and stores it in a Vec.
Synopsis#
#include "petscdmplex.h"
PetscErrorCode DMPlexComputeL2DiffVec(DM dm, PetscReal time, PetscErrorCode (**funcs)(PetscInt, PetscReal, const PetscReal[], PetscInt, PetscScalar *, void *), void **ctxs, Vec X, Vec D)
Collective
Input Parameters#
dm - The
DMtime - The time
funcs - The functions to evaluate for each field component:
NULLmeans that component does not contribute to error calculationctxs - Optional array of contexts to pass to each function, or
NULL.X - The coefficient vector u_h
Output Parameter#
D - A
Vecwhich holds the difference ||u - u_h||_2 for each cell
See Also#
DMPlex: Unstructured Grids, DM, DMPLEX, DMProjectFunction(), DMComputeL2Diff(), DMPlexComputeL2FieldDiff(), DMComputeL2GradientDiff()
Level#
developer
Location#
Examples#
src/snes/tutorials/ex13.c
src/snes/tutorials/ex27.c
src/snes/tutorials/ex69.c
Index of all DMPlex routines
Table of Contents for all manual pages
Index of all manual pages