petsc-3.5.4 2015-05-23
KSPQCGGetTrialStepNorm
Gets the norm of a trial step vector. The WCG step may be constrained, so this is not necessarily the length of the ultimate step taken in QCG.
Synopsis
#include "petscksp.h"
PetscErrorCode KSPQCGGetTrialStepNorm(KSP ksp,PetscReal *tsnorm)
Not Collective
Input Parameter
ksp -the iterative context
Output Parameter
tsnorm -the norm
Level:advanced
Location:src/ksp/ksp/impls/qcg/qcg.c
Index of all KSP routines
Table of Contents for all manual pages
Index of all manual pages