MatGetOperation

Gets a matrix operation for any matrix type.

Synopsis

#include "petscmat.h" 
PetscErrorCode MatGetOperation(Mat mat, MatOperation op, PetscErrorCodeFn **f)

Not Collective

Input Parameters

• mat - the matrix

• op - the name of the operation

Output Parameter

• f - the function that provides the operation

Example Usage

  PetscErrorCode (*usermult)(Mat, Vec, Vec);

  MatGetOperation(A, MATOP_MULT, (PetscErrorCodeFn **)&usermult);

Notes

See the file include/petscmat.h for a complete list of matrix operations, which all have the form MATOP_, where is the name (in all capital letters) of the user interface routine (e.g., MatMult() -> MATOP_MULT).

This routine is distinct from MatShellGetOperation() in that it can be called on any matrix type.

See Also

Matrices, Mat, MatSetOperation(), MatCreateShell(), MatShellGetContext(), MatShellGetOperation()

Level

developer

Location

src/mat/interface/matrix.c

Examples

src/ksp/ksp/tutorials/ex29.c
src/ksp/ksp/tutorials/ex34.c

---

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