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

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Index of all MatFD routines
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Index of all manual pages