TaoGetResidualNorm#
Gets the current value of the norm of the residual (gradient) at this time.
Synopsis#
#include "petsctao.h" 
PetscErrorCode TaoGetResidualNorm(Tao tao, PetscReal *value)
Not Collective
Input Parameter#
- tao - the - Taocontext
Output Parameter#
- value - the current value 
Developer Notes#
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#
TAO: Optimization Solvers, Tao, TaoGetLinearSolveIterations(), TaoGetIterationNumber(), TaoGetObjective()
Level#
intermediate
Location#
Index of all Tao routines
Table of Contents for all manual pages
Index of all manual pages