petsc-master 2020-09-18
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DMSNESCheckDiscretization

Check the discretization error of the exact solution

Synopsis

#include "petscdmplex.h" 
#include "petscsnes.h"   
PetscErrorCode DMSNESCheckDiscretization(SNES snes, DM dm, PetscReal t, Vec u, PetscReal tol, PetscReal error[])

Input Parameters

snes - the SNES object
dm - the DM
t - the time
u - a DM vector
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

Note: The user must call PetscDSSetExactSolution() beforehand

See Also

DNSNESCheckFromOptions(), DMSNESCheckResidual(), DMSNESCheckJacobian(), PetscDSSetExactSolution()

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