TaoMatGetSubMat

Gets a submatrix using the IS

Synopsis

#include "petsctao.h" 
PetscErrorCode TaoMatGetSubMat(Mat M, IS is, Vec v1, TaoSubsetType subset_type, Mat *Msub)

Input Parameters

• M - the full matrix (n x n)

• is - the index set for the submatrix (both row and column index sets need to be the same)

• v1 - work vector of dimension n, needed for TAO_SUBSET_MASK option

• subset_type <TAO_SUBSET_SUBVEC, TAO_SUBSET_MASK, TAO_SUBSET_MATRIXFREE> - the method Tao is using for subsetting

Output Parameter

• Msub - the submatrix

Level

developer

Location

src/tao/bound/utils/isutil.c

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Index of all Tao routines
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