petsc-dev 2014-07-09
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MatGetBlockSize

Returns the matrix block size; useful especially for the block row and block diagonal formats.

Synopsis

#include "petscmat.h" 
PetscErrorCode  MatGetBlockSize(Mat mat,PetscInt *bs)
Not Collective

Input Parameter

mat -the matrix

Output Parameter

bs -block size

Notes

Block row formats are MATSEQBAIJ, MATMPIBAIJ, MATSEQSBAIJ, MATMPISBAIJ.

If the block size has not been set yet this routine returns -1.

See Also

MatCreateSeqBAIJ(), MatCreateBAIJ(), MatGetBlockSizes()

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