petsc-3.12.5 2020-03-29
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MatSubMatrixVirtualUpdate

Updates a submatrix

Synopsis

#include "petscmat.h" 
PetscErrorCode  MatSubMatrixVirtualUpdate(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 MatCreateSubMatrix which provides a more efficient representation if it is available.

See Also

MatCreateSubMatrixVirtual()

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