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 - the method Tao is using for subsetting

Output Parameter#

  • Msub - the submatrix

See Also#

TaoVecGetSubVec(), TaoSubsetType

Level#

developer

Location#

src/tao/bound/utils/isutil.c

Index of all Tao routines
Table of Contents for all manual pages
Index of all manual pages