MatRestoreRowIJ#

Call after you are completed with the ia,ja indices obtained with MatGetRowIJ().

Synopsis#

#include "petscmat.h" 
PetscErrorCode MatRestoreRowIJ(Mat mat, PetscInt shift, PetscBool symmetric, PetscBool inodecompressed, PetscInt *n, const PetscInt *ia[], const PetscInt *ja[], PetscBool *done)

Collective

Input Parameters#

mat - the matrix
shift - 1 or zero 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 - size of (possibly compressed) matrix
ia - the row pointers
ja - the column indices

Output Parameters#

done - PETSC_TRUE or PETSC_FALSE indicated that the values have been returned

Note#

This routine zeros out n, ia, and ja. This is to prevent accidental us of the array after it has been restored. If you pass NULL, it will not zero the pointers. Use of ia or ja after MatRestoreRowIJ() is invalid.