KSPSetInitialGuessNonzero

Tells the iterative solver that the initial guess is nonzero; otherwise KSP assumes the initial guess is to be zero (and thus zeros it out before solving).

Synopsis

#include "ksp.h" 
int KSPSetInitialGuessNonzero(KSP ksp)
Collective on KSP

Input Parameters

ksp -iterative context obtained from SLESGetKSP() or KSPCreate()

Notes

If this is not called the X vector is zeroed in the call to SLESSolve() (or KSPSolve()).

Keywords

KSP, set, initial guess, nonzero

See Also

KSPGetIntialGuessNonzero()

Examples

src/sles/examples/tutorials/ex3.c
src/sles/examples/tutorials/ex9.c

Level:beginner
Location:src/sles/ksp/interface/itfunc.c
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