DMSNESCheckResidual#

Check the residual of the exact solution

Synopsis#

#include "petscdmplex.h" 
#include "petscsnes.h"   
PetscErrorCode DMSNESCheckResidual(SNES snes, DM dm, Vec u, PetscReal tol, PetscReal *residual)

Input Parameters#

  • snes - the SNES object

  • dm - the DM

  • u - a DM vector

  • tol - A tolerance for the check, or -1 to print the results instead

Output Parameter#

  • residual - The residual norm of the exact solution, or NULL

See Also#

SNES: Nonlinear Solvers, DNSNESCheckFromOptions(), DMSNESCheckDiscretization(), DMSNESCheckJacobian()

Level#

developer

Location#

src/snes/utils/dmplexsnes.c

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