petsc-master 2020-09-18
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ISRestoreIndices

Restores an index set to a usable state after a call to ISGetIndices().

Synopsis

#include "petscis.h" 
PetscErrorCode  ISRestoreIndices(IS is,const PetscInt *ptr[])
Not Collective

Input Parameters

is - the index set
ptr - the pointer obtained by ISGetIndices()

Fortran Note

This routine is used differently from Fortran
   IS          is
   integer     is_array(1)
   PetscOffset i_is
   int         ierr
      call ISGetIndices(is,is_array,i_is,ierr)

  Access first local entry in list
     value = is_array(i_is + 1)

     ...... other code
      call ISRestoreIndices(is,is_array,i_is,ierr)

See the Fortran chapter of the users manual and petsc/src/vec/is/tests for details.

Note

This routine zeros out ptr. This is to prevent accidental us of the array after it has been restored.

See Also

ISGetIndices(), ISRestoreIndicesF90()

Level

intermediate

Location

src/vec/is/is/interface/index.c

Examples

src/vec/vec/utils/tagger/tutorials/ex1.c.html
src/vec/is/is/tutorials/ex1.c.html
src/vec/is/is/tutorials/ex2.c.html
src/vec/is/is/tutorials/ex3.c.html
src/vec/is/is/tutorials/ex1f.F.html
src/vec/is/is/tutorials/ex2f.F.html
src/dm/tutorials/swarm_ex3.c.html
src/ksp/ksp/tutorials/ex71.c.html
src/ksp/ksp/tutorials/ex76.c.html
src/snes/tutorials/ex56.c.html
src/snes/tutorials/ex77.c.html

Implementations

ISRestoreIndices_Block in src/vec/is/is/impls/block/block.c
ISRestoreIndices_General in src/vec/is/is/impls/general/general.c
ISRestoreIndices_Stride in src/vec/is/is/impls/stride/stride.c

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