petsc-3.9.2 2018-05-20
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KSPBuildResidual

Builds the residual in a vector provided.

Synopsis

#include "petscksp.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.

Keywords

KSP, build, residual

See Also

KSPBuildSolution()

Level

advanced

Location

src/ksp/ksp/interface/itfunc.c

Examples

src/ksp/ksp/examples/tutorials/ex42.c.html

Implementations

KSPBuildResidual_GCR in src/ksp/ksp/impls/gcr/gcr.c

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