MatFDColoringSetFunction#
Sets the function to use for computing the Jacobian.
Synopsis#
#include "petscmat.h"
PetscErrorCode MatFDColoringSetFunction(MatFDColoring matfd, PetscErrorCode (*f)(void), void *fctx)
Logically Collective
Input Parameters#
coloring - the coloring context
f - the function
fctx - the optional user-defined function context
Calling sequence of (*f) function#
For SNES
: PetscErrorCode (f)(SNES,Vec,Vec,void)
If not using SNES
: PetscErrorCode (*f)(void dummy,Vec,Vec,void) and dummy is ignored
Note#
This function is usually used automatically by SNES
(when one uses SNESSetJacobian()
with the argument
SNESComputeJacobianDefaultColor()
) and only needs to be used by someone computing a matrix via coloring directly by
calling MatFDColoringApply()
Fortran Note#
In Fortran you must call MatFDColoringSetFunction()
for a coloring object to
be used without SNES
or within the SNES
solvers.
See Also#
Mat
, MatFDColoring
, MatFDColoringCreate()
, MatFDColoringGetFunction()
, MatFDColoringSetFromOptions()
Level#
advanced
Location#
Examples#
src/snes/tutorials/ex14.c.html
src/tao/unconstrained/tutorials/minsurf2.c.html
Index of all MatFD routines
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Index of all manual pages