petsc-dev 2014-04-16
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MatFindOffBlockDiagonalEntries

Finds all the rows of a matrix that have entries outside of the main diagonal block (defined by the matrix block size)

Synopsis

#include "petscmat.h" 
PetscErrorCode  MatFindOffBlockDiagonalEntries(Mat mat,IS *is)
Collective on Mat

Input Parameter

mat -the matrix

Output Parameter

is -contains the list of rows with off block diagonal entries

See Also

MatMultTranspose(), MatMultAdd(), MatMultTransposeAdd()

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