MatDenseGetColumn#
gives access to a column of a dense matrix. This is only the local part of the column. You MUST call MatDenseRestoreColumn()
to avoid memory bleeding.
Synopsis#
#include "petscmat.h"
PetscErrorCode MatDenseGetColumn(Mat A, PetscInt col, PetscScalar **vals)
Not Collective
Input Parameters#
mat - a
MATSEQDENSE
orMATMPIDENSE
matrixcol - column index
Output Parameter#
vals - pointer to the data
Note#
Use MatDenseGetColumnVec()
to get access to a column of a MATDENSE
treated as a Vec
See Also#
Level#
intermediate
Location#
Examples#
src/ts/tutorials/ex20opt_ic.c.html
src/ts/tutorials/ex20opt_p.c.html
Implementations#
MatDenseGetColumn_MPIDense in src/mat/impls/dense/mpi/mpidense.c
MatDenseGetColumn_SeqDense in src/mat/impls/dense/seq/dense.c
Index of all Mat routines
Table of Contents for all manual pages
Index of all manual pages