PETSc version 3.17.4
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# MatShellSetContext

sets the context for a shell matrix

### Synopsis

    #include "petscmat.h"
    PetscErrorCode  MatShellSetContext(Mat mat,void *ctx)

Logically Collective on Mat

### Input Parameters

| mat | - the shell matrix
| ctx | - the context

### Fortran Notes

To use this from Fortran you must write a Fortran interface definition for this function that tells Fortran the Fortran derived data type that you are passing in as the ctx argument.

### See Also

MatCreateShell(), MatShellGetContext(), MatShellGetOperation()

### Level

advanced

### Location

src/mat/impls/shell/shell.c

### Examples

src/mat/tutorials/ex6f.F90.html
src/snes/tutorials/ex12.c.html
src/ts/tutorials/ex50.c.html
src/ts/tutorials/ex22f_mf.F90.html

### Implementations

MatShellSetContext_Shell in src/mat/impls/shell/shell.c
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