petsc-3.13.6 2020-09-29
DMSNESCheckDiscretization
Check the discretization error of the exact solution
Synopsis
#include "petscdmplex.h"
#include "petscsnes.h"
PetscErrorCode DMSNESCheckDiscretization(SNES snes, DM dm, Vec u, PetscErrorCode (**exactFuncs)(PetscInt, PetscReal, const PetscReal x[], PetscInt, PetscScalar *u, void *ctx), void **ctxs, PetscReal tol, PetscReal error[])
Input Parameters
| snes | - the SNES object
|
| dm | - the DM
|
| u | - a DM vector
|
| exactFuncs | - pointwise functions of the exact solution for each field
|
| ctxs | - contexts for the functions
|
| tol | - A tolerance for the check, or -1 to print the results instead
|
Output Parameters
error -An array which holds the discretization error in each field, or NULL
See Also
DNSNESCheckFromOptions(), DMSNESCheckResidual(), DMSNESCheckJacobian()
Level
developer
Location
src/snes/utils/dmplexsnes.c
Index of all SNES routines
Table of Contents for all manual pages
Index of all manual pages