PETSc version 3.15.5
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 | 
|  | time | - The time | 
|  | funcs | - The functions to evaluate for each field component | 
|  | ctxs | - Optional array of contexts to pass to each function, or NULL. | 
|  | localX | - The coefficient vector u_h, a local vector | 
Output Parameter
|  | diff | - The diff ||u - u_h||_2 | 
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