MatSNESMFSetFunction

 Sets the function used in applying the matrix free.

Synopsis

#include "petscsnes.h"   
int MatSNESMFSetFunction(Mat mat,Vec v,int (*func)(SNES,Vec,Vec,void *),void *funcctx)
Collective on Mat

Input Parameters

mat - the matrix free matrix created via MatCreateSNESMF()
v - workspace vector
func - the function to use
funcctx - optional function context passed to function

Notes

If you use this you MUST call MatAssemblyBegin()/MatAssemblyEnd() on the matrix free matrix inside your compute Jacobian routine

If this is not set then it will use the function set with SNESSetFunction()

Keywords

SNES, matrix-free, function

See Also

MatCreateSNESMF(),MatSNESMFGetH(),
MatSNESMFSetHHistory(), MatSNESMFResetHHistory(), MatSNESMFKSPMonitor(), SNESetFunction()

Level:advanced
Location:src/snes/mf/snesmfj.c
Index of all SNESMF routines
Table of Contents for all manual pages
Index of all manual pages