petsc-3.12.5 2020-03-29
TaoGetResidualNorm
Gets the current value of the norm of the residual at this time.
Synopsis
#include "petsctao.h"
PetscErrorCode TaoGetResidualNorm(Tao tao,PetscReal *value)
Not Collective
Input Parameter
tao -Tao context
Output Parameter
value -the current value
Developer Note: This is the 2-norm of the residual, we cannot use TaoGetGradientNorm() because that has
a different meaning. For some reason Tao sometimes calls the gradient the residual.
See Also
TaoGetLinearSolveIterations(), TaoGetIterationNumber(), TaoGetObjective()
Level
intermediate
Location
src/tao/interface/taosolver.c
Index of all Tao routines
Table of Contents for all manual pages
Index of all manual pages