petsc-3.4.2 2013-07-02

# KSPGetResidualNorm

Gets the last (approximate preconditioned) residual norm that has been computed.

### Synopsis

    #include "petscksp.h"
    PetscErrorCode  KSPGetResidualNorm(KSP ksp,PetscReal *rnorm)

Not Collective

### Input Parameters

ksp -the iterative context

### Output Parameters

rnorm -residual norm

### Keywords

KSP, get, residual norm

### See Also

KSPBuildResidual()

Level:intermediate
Location: src/ksp/ksp/interface/iterativ.c
Index of all KSP routines
Table of Contents for all manual pages
Index of all manual pages