PETSc version 3.17.0
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# MatFDColoringGetFunction

Gets the function to use for computing the Jacobian.

### Synopsis

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

Not Collective

### Input Parameter

| coloring | - the coloring context

### Output Parameters

| f | - the function
| fctx | - the optional user-defined function context

### See Also

MatFDColoringCreate(), MatFDColoringSetFunction(), MatFDColoringSetFromOptions()

### Level

intermediate

### Location

src/mat/matfd/fdmatrix.c
Index of all MatFD routines
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Index of all manual pages