MatShellGetOperation#
Gets a matrix function for a MATSHELL shell matrix.
Synopsis#
#include "petscmat.h"
PetscErrorCode MatShellGetOperation(Mat mat, MatOperation op, void (**g)(void))
Not Collective
Input Parameters#
mat - the
MATSHELLshell matrixop - the name of the operation
Output Parameter#
g - the function that provides the operation.
Notes#
See the file include/petscmat.h for a complete list of matrix
operations, which all have the form MATOP_MatMult() -> MATOP_MULT).
All user-provided functions have the same calling sequence as the usual matrix interface routines, since they are intended to be accessed via the usual matrix interface routines, e.g.,
Within each user-defined routine, the user should call
MatShellGetContext() to obtain the user-defined context that was
set by MatCreateShell().
See Also#
Matrices, Mat, MATSHELL, MatCreateShell(), MatShellGetContext(), MatShellSetOperation(), MatShellSetContext()
Level#
advanced
Location#
Implementations#
MatShellGetOperation_Shell(Mat mat, MatOperation op, void (**f)() in src/mat/impls/shell/shell.c
Index of all Mat routines
Table of Contents for all manual pages
Index of all manual pages