MatFDColoringSetFunction#

Sets the function to use for computing the Jacobian.

Synopsis#

#include "petscmat.h" 
PetscErrorCode MatFDColoringSetFunction(MatFDColoring matfd, MatFDColoringFn *f, void *fctx)

Logically Collective

Input Parameters#

  • matfd - the coloring context

  • f - the function, see MatFDColoringFn for the calling sequence

  • fctx - the optional user-defined function context

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(), MatFDColoringFn

Level#

advanced

Location#

src/mat/matfd/fdmatrix.c

Examples#

src/tao/unconstrained/tutorials/minsurf2.c
src/snes/tutorials/ex14.c


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