petsc-3.13.6 2020-09-29
KSPSetPreSolve
Sets a function that is called before every KSPSolve() is started
Synopsis
#include "petscksp.h"
PetscErrorCode KSPSetPreSolve(KSP ksp,PetscErrorCode (*presolve)(KSP,Vec,Vec,void*),void *prectx)
Logically Collective on ksp
Input Parameters
| ksp | - the solver object
|
| presolve | - the function to call before the solve
|
| prectx | - any context needed by the function
|
Calling sequence of presolve
func(KSP ksp,Vec rhs,Vec x,void *ctx)
| ksp | - the KSP context
|
| rhs | - the right-hand side vector
|
| x | - the solution vector
|
| ctx | - optional user-provided context
|
See Also
KSPSetUp(), KSPSolve(), KSPDestroy(), KSP, KSPSetPostSolve()
Level
developer
Location
src/ksp/ksp/interface/itcreate.c
Index of all KSP routines
Table of Contents for all manual pages
Index of all manual pages