petsc-3.14.6 2021-03-30
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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

Implementations

KSPQCGGetTrialStepNorm_QCG in src/ksp/ksp/impls/qcg/qcg.c

Index of all KSP routines
Table of Contents for all manual pages
Index of all manual pages