MatDenseRestoreSubMatrix — PETSc 3.21.4 documentation

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# MatDenseRestoreSubMatrix

Returns access to a block of columns of a dense matrix obtained from `MatDenseGetSubMatrix()`.

## Synopsis

    #include "petscmat.h"
    PetscErrorCode MatDenseRestoreSubMatrix(Mat A, Mat *v)

Collective

## Input Parameters

- A - the `Mat` object

- v - the `Mat` object (may be `NULL`)

## See Also

Matrices, `Mat`, `MATDENSE`, `MATDENSECUDA`, `MATDENSEHIP`, `MatDenseGetColumnVec()`, `MatDenseRestoreColumnVec()`, `MatDenseGetSubMatrix()`

## Level

intermediate

## Location

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

## Implementations

MatDenseRestoreSubMatrix_MPIDense() in src/mat/impls/dense/mpi/mpidense.c
MatDenseRestoreSubMatrix_SeqDense() in src/mat/impls/dense/seq/dense.c

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