MatDenseGetColumnVec#
Gives read-write access to a column of a MATDENSE matrix, represented as a Vec.
Synopsis#
#include "petscmat.h"
PetscErrorCode MatDenseGetColumnVec(Mat A, PetscInt col, Vec *v)
Collective
Input Parameters#
A - the
Matobjectcol - the column index
Output Parameter#
v - the vector
Notes#
The vector is owned by PETSc. Users need to call MatDenseRestoreColumnVec() when the vector is no longer needed.
Use MatDenseGetColumnVecRead() to obtain read-only access or MatDenseGetColumnVecWrite() for write-only access.
See Also#
Matrices, Mat, MATDENSE, MATDENSECUDA, MATDENSEHIP, MatDenseGetColumnVecRead(), MatDenseGetColumnVecWrite(), MatDenseRestoreColumnVec(), MatDenseRestoreColumnVecRead(), MatDenseRestoreColumnVecWrite(), MatDenseGetColumn()
Level#
intermediate
Location#
Examples#
src/mat/tests/ex318.c
src/mat/tests/ex70.c
src/ml/da/tutorials/ex1.c
src/ml/da/tutorials/ex2.c
src/ml/da/tutorials/ex3.c
src/ml/da/tutorials/ex4.c
src/ksp/ksp/tests/ex90.c
src/vec/vec/tests/ex16k.kokkos.cxx
Implementations#
MatDenseGetColumnVec_MPIDense() in src/mat/impls/dense/mpi/mpidense.c
MatDenseGetColumnVec_SeqDense() in src/mat/impls/dense/seq/dense.c
Index of all Mat routines
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Index of all manual pages