petsc-3.13.6 2020-09-29
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 Parameter
| mat | - a MATSEQDENSE or MATMPIDENSE matrix
|
| col | - column index
|
Output Parameter
vals -pointer to the data
See Also
MatDenseRestoreColumn()
Level
intermediate
Location
src/mat/impls/dense/seq/dense.c
Examples
src/ksp/ksp/tutorials/ex77.c.html
src/ts/tutorials/ex20opt_p.c.html
src/ts/tutorials/ex20opt_ic.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