petsc-3.4.4 2014-03-13

MatSubMatrixUpdate

Updates a submatrix

Synopsis

#include "petscmat.h" 
PetscErrorCode  MatSubMatrixUpdate(Mat N,Mat A,IS isrow,IS iscol)
Collective on Mat

Input Parameters

N - submatrix to update
A - full matrix in the submatrix
isrow - rows in the update (same as the first time the submatrix was created)
iscol - columns in the update (same as the first time the submatrix was created)

Notes

Most will use MatGetSubMatrix which provides a more efficient representation if it is available.

See Also

MatGetSubMatrix(), MatCreateSubMatrix()

Level:developer
Location:
src/mat/impls/submat/submat.c
Index of all Mat routines
Table of Contents for all manual pages
Index of all manual pages