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 DM

  • time - The time

  • funcs - The functions to evaluate for each field component: NULL means that component does not contribute to error calculation

  • ctxs - Optional array of contexts to pass to each function, or NULL.

  • X - The coefficient vector u_h

Output Parameter#

  • D - A Vec which holds the difference ||u - u_h||_2 for each cell

See Also#

DMPlex: Unstructured Grids, DM, DMPLEX, DMProjectFunction(), DMComputeL2Diff(), DMPlexComputeL2FieldDiff(), DMComputeL2GradientDiff()

Level#

developer

Location#

src/dm/impls/plex/plexfem.c

Examples#

src/snes/tutorials/ex13.c
src/snes/tutorials/ex69.c

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Index of all DMPlex routines
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Index of all manual pages