MatDenseGetColumnVecWrite

Gives write-only access to a column of a dense matrix, represented as a Vec.

Synopsis

#include "petscmat.h" 
PetscErrorCode MatDenseGetColumnVecWrite(Mat A, PetscInt col, Vec *v)

Collective

Input Parameters

• A - the Mat object

• col - the column index

Output Parameter

• v - the vector

Notes

The vector is owned by PETSc. Users need to call MatDenseRestoreColumnVecWrite() when the vector is no longer needed.

Use MatDenseGetColumnVec() to obtain read-write access or MatDenseGetColumnVecRead() for read-only access.

See Also

Matrices, Mat, MATDENSE, MATDENSECUDA, MATDENSEHIP, MatDenseGetColumnVec(), MatDenseGetColumnVecRead(), MatDenseRestoreColumnVec(), MatDenseRestoreColumnVecRead(), MatDenseRestoreColumnVecWrite()

Level

intermediate

Location

src/mat/impls/dense/seq/dense.c

Implementations

MatDenseGetColumnVecWrite_MPIDense() in src/mat/impls/dense/mpi/mpidense.c
MatDenseGetColumnVecWrite_SeqDense() in src/mat/impls/dense/seq/dense.c

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