petsc-3.14.6 2021-03-30
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 on dm
Input Parameters
| dm | - The DM
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| time | - The time
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| 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.
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| X | - The coefficient vector u_h
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Output Parameter
| D | - A Vec which holds the difference ||u - u_h||_2 for each cell
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See Also
DMProjectFunction(), DMComputeL2Diff(), DMPlexComputeL2FieldDiff(), DMComputeL2GradientDiff()
Level
developer
Location
src/dm/impls/plex/plexfem.c
Index of all DMPLEX routines
Table of Contents for all manual pages
Index of all manual pages