petsc-3.14.6 2021-03-30
DMComputeL2DiffLocal
This function computes the L_2 difference between a function u and an FEM interpolant solution u_h.
Synopsis
#include "petscdmplex.h"
PetscErrorCode DMPlexComputeL2DiffLocal(DM dm, PetscReal time, PetscErrorCode (**funcs)(PetscInt, PetscReal, const PetscReal [], PetscInt, PetscScalar *, void *), void **ctxs, Vec localX, PetscReal *diff)
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
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| ctxs | - Optional array of contexts to pass to each function, or NULL.
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| localX | - The coefficient vector u_h, a local vector
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Output Parameter
| diff | - The diff ||u - u_h||_2
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See Also
DMProjectFunction(), DMComputeL2FieldDiff(), 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