petsc-3.15.0 2021-03-30
KSPBuildResidual
Builds the residual in a vector provided.
Synopsis
#include "petscksp.h"
#include "petscmat.h"
PetscErrorCode KSPBuildResidual(KSP ksp,Vec t,Vec v,Vec *V)
Collective on ksp
Input Parameter
| ksp | - iterative context obtained from KSPCreate()
|
Output Parameters
| v | - optional location to stash residual. If v is not provided,
then a location is generated.
|
| t | - work vector. If not provided then one is generated.
|
| V | - the residual
|
Notes
Regardless of whether or not v is provided, the residual is
returned in V.
See Also
KSPBuildSolution()
Level
advanced
Location
src/ksp/ksp/interface/itfunc.c
Examples
src/ksp/ksp/tutorials/ex42.c.html
Index of all KSP routines
Table of Contents for all manual pages
Index of all manual pages