petsc-3.10.2 2018-10-09
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KSPSetComputeInitialGuess

set routine to compute the initial guess of the linear system

Synopsis

#include "petscksp.h" 
PetscErrorCode KSPSetComputeInitialGuess(KSP ksp,PetscErrorCode (*func)(KSP,Vec,void*),void *ctx)
Logically Collective

Input Arguments

ksp - the KSP context
func - function to compute the initial guess
ctx - optional context

Calling sequence of func

 func(KSP ksp,Vec x,void *ctx)

ksp - the KSP context
x - solution vector
ctx - optional user-provided context

See Also

KSPSolve(), KSPSetComputeRHS(), KSPSetComputeOperators(), DMKSPSetComputeInitialGuess()

Level

beginner

Location

src/ksp/ksp/interface/itfunc.c

Examples

src/ksp/ksp/examples/tutorials/ex45.c.html
src/ksp/ksp/examples/tutorials/ex45f.F90.html

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