MatRestoreRow#
Frees any temporary space allocated by MatGetRow().
Synopsis#
#include "petscmat.h"
PetscErrorCode MatRestoreRow(Mat mat, PetscInt row, PetscInt *ncols, const PetscInt *cols[], const PetscScalar *vals[])
Not Collective
Input Parameters#
mat - the matrix
row - the row to get
ncols - the number of nonzeros
cols - the columns of the nonzeros
vals - if nonzero the column values
Notes#
This routine should be called after you have finished examining the entries.
This routine zeros out ncols, cols, and vals. 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 cols or vals after MatRestoreRow() is invalid.
Fortran Note#
MatRestoreRow() MUST be called after MatGetRow()
before another call to MatGetRow() can be made.
See Also#
Level#
advanced
Location#
Examples#
src/mat/tutorials/ex16.c
src/mat/tutorials/ex12.c
src/ksp/ksp/tutorials/ex59.c
Implementations#
MatRestoreRow_MPIAdj() in src/mat/impls/adj/mpi/mpiadj.c
MatRestoreRow_MPIAIJ() in src/mat/impls/aij/mpi/mpiaij.c
MatRestoreRow_SeqAIJ() in src/mat/impls/aij/seq/aij.c
MatRestoreRow_MPIBAIJ() in src/mat/impls/baij/mpi/mpibaij.c
MatRestoreRow_SeqBAIJ() in src/mat/impls/baij/seq/baij.c
MatRestoreRow_ConstantDiagonal() in src/mat/impls/cdiagonal/cdiagonal.c
MatRestoreRow_MPIDense() in src/mat/impls/dense/mpi/mpidense.c
MatRestoreRow_SeqDense() in src/mat/impls/dense/seq/dense.c
MatRestoreRow_Diagonal() in src/mat/impls/diagonal/diagonal.c
MatRestoreRow_Htool() in src/mat/impls/htool/htool.cxx
MatRestoreRow_HYPRE() in src/mat/impls/hypre/mhypre.c
MatRestoreRow_SeqKAIJ() in src/mat/impls/kaij/kaij.c
MatRestoreRow_MPIKAIJ() in src/mat/impls/kaij/kaij.c
MatRestoreRow_MPISBAIJ() in src/mat/impls/sbaij/mpi/mpisbaij.c
MatRestoreRow_SeqSBAIJ() in src/mat/impls/sbaij/seq/sbaij.c
MatRestoreRow_SeqSELL() in src/mat/impls/sell/seq/sell.c
Index of all Mat routines
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Index of all manual pages