MatRestoreRowIJF90 — PETSc 3.21.4 documentation

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# MatRestoreRowIJF90

restores the compressed row storage i and j indices for the local rows of a sparse matrix obtained with `MatGetRowIJF90()`

## Synopsis

    MatRestoreRowIJF90(Mat A, PetscInt shift, PetscBool symmetric, PetscBool inodecompressed, PetscInt n, {PetscInt, pointer :: ia(:)}, {PetscInt, pointer :: ja(:)}, PetscBool done,integer ierr)

Not Collective

## Input Parameters

- A - the matrix

- shift - 0 or 1 indicating we want the indices starting at 0 or 1

- symmetric - `PETSC_TRUE` or `PETSC_FALSE` indicating the matrix data structure should be symmetrized inodecompressed - `PETSC_TRUE` or `PETSC_FALSE` indicating if the nonzero structure of the inodes or the nonzero elements is wanted. For `MATBAIJ` matrices the compressed version is always used.

- n - number of local rows in the (possibly compressed) matrix

- ia - the row pointers; that is ia[0] = 0, ia[row] = ia[row-1] + number of elements in that row of the matrix

- ja - the column indices

- done - indicates if the routine actually worked and returned appropriate ia[] and ja[] arrays; callers are responsible for handling the case when done == `PETSC_FALSE` and ia and ja are not set

## See Also

Matrices, Routines that Return Fortran Allocatable Arrays, `Mat`, `MATMPIAIJ`, `MatGetRowIJ()`, `MatRestoreRowIJ()`, `MatGetRowIJF90()`

## Level

developer

## Location

src/mat/interface/matrix.c

Index of all Mat routines
Table of Contents for all manual pages
Index of all manual pages