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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML3.2 EN">
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<HEAD> <link rel="canonical" href="http://www.mcs.anl.gov/petsc/petsc-current/docs/manualpages/IS/ISRestoreIndices.html" />
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<TITLE>ISRestoreIndices</TITLE>
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<BODY BGCOLOR="FFFFFF">
<div id="version" align=right><b>petsc-3.10.3 2018-12-18</b></div>
<div id="bugreport" align=right><a href="mailto:petsc-maint@mcs.anl.gov?subject=Typo or Error in Documentation &body=Please describe the typo or error in the documentation: petsc-3.10.3 v3.10.3 docs/manualpages/IS/ISRestoreIndices.html "><small>Report Typos and Errors</small></a></div>
<A NAME="ISRestoreIndices"><H1>ISRestoreIndices</H1></A>
Restores an index set to a usable state after a call to <A HREF="../IS/ISGetIndices.html#ISGetIndices">ISGetIndices</A>().
<H3><FONT COLOR="#CC3333">Synopsis</FONT></H3>
<PRE>
#include "petscis.h"
<A HREF="../Sys/PetscErrorCode.html#PetscErrorCode">PetscErrorCode</A> <A HREF="../IS/ISRestoreIndices.html#ISRestoreIndices">ISRestoreIndices</A>(<A HREF="../IS/IS.html#IS">IS</A> is,const <A HREF="../Sys/PetscInt.html#PetscInt">PetscInt</A> *ptr[])
</PRE>
Not Collective
<P>
<H3><FONT COLOR="#CC3333">Input Parameters</FONT></H3>
<TABLE border="0" cellpadding="0" cellspacing="0">
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>is </B></TD><TD>- the index set
</TD></TR>
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>ptr </B></TD><TD>- the pointer obtained by <A HREF="../IS/ISGetIndices.html#ISGetIndices">ISGetIndices</A>()
</TD></TR></TABLE>
<P>
<H3><FONT COLOR="#CC3333">Fortran Note</FONT></H3>
This routine is used differently from Fortran
<pre>
<A HREF="../IS/IS.html#IS">IS</A> is
</pre>
<pre>
integer is_array(1)
</pre>
<pre>
<A HREF="../Sys/PetscOffset.html#PetscOffset">PetscOffset</A> i_is
</pre>
<pre>
int ierr
</pre>
<pre>
call <A HREF="../IS/ISGetIndices.html#ISGetIndices">ISGetIndices</A>(is,is_array,i_is,ierr)
</pre>
<pre>
</pre>
<pre>
Access first local entry in list
</pre>
<pre>
value = is_array(i_is + 1)
</pre>
<pre>
</pre>
<pre>
...... other code
</pre>
<pre>
call <A HREF="../IS/ISRestoreIndices.html#ISRestoreIndices">ISRestoreIndices</A>(is,is_array,i_is,ierr)
</pre>
<P>
See the Fortran chapter of the users manual and
petsc/src/is/examples/[tutorials,tests] for details.
<P>
<P>
<H3><FONT COLOR="#CC3333">Note</FONT></H3>
This routine zeros out ptr. This is to prevent accidental us of the array after it has been restored.
<P>
<H3><FONT COLOR="#CC3333">See Also</FONT></H3>
<A HREF="../IS/ISGetIndices.html#ISGetIndices">ISGetIndices</A>(), <A HREF="../IS/ISRestoreIndicesF90.html#ISRestoreIndicesF90">ISRestoreIndicesF90</A>()
<BR><P><B></B><H3><FONT COLOR="#CC3333">Level</FONT></H3>intermediate<BR>
<H3><FONT COLOR="#CC3333">Location</FONT></H3>
</B><A HREF="../../../src/vec/is/is/interface/index.c.html#ISRestoreIndices">src/vec/is/is/interface/index.c</A>
<A HREF="../../../src/vec/vec/utils/tagger/examples/tutorials/ex1.c.html">src/vec/vec/utils/tagger/examples/tutorials/ex1.c.html</A><BR>
<A HREF="../../../src/vec/is/is/examples/tutorials/ex1.c.html">src/vec/is/is/examples/tutorials/ex1.c.html</A><BR>
<A HREF="../../../src/vec/is/is/examples/tutorials/ex2.c.html">src/vec/is/is/examples/tutorials/ex2.c.html</A><BR>
<A HREF="../../../src/vec/is/is/examples/tutorials/ex3.c.html">src/vec/is/is/examples/tutorials/ex3.c.html</A><BR>
<A HREF="../../../src/vec/is/is/examples/tutorials/ex1f.F.html">src/vec/is/is/examples/tutorials/ex1f.F.html</A><BR>
<A HREF="../../../src/vec/is/is/examples/tutorials/ex2f.F.html">src/vec/is/is/examples/tutorials/ex2f.F.html</A><BR>
<A HREF="../../../src/dm/examples/tutorials/swarm_ex3.c.html">src/dm/examples/tutorials/swarm_ex3.c.html</A><BR>
<A HREF="../../../src/snes/examples/tutorials/ex56.c.html">src/snes/examples/tutorials/ex56.c.html</A><BR>
<A HREF="../../../src/snes/examples/tutorials/ex77.c.html">src/snes/examples/tutorials/ex77.c.html</A><BR>
<A HREF="../../../src/ts/examples/tutorials/ex11.c.html">src/ts/examples/tutorials/ex11.c.html</A><BR>
<P><H3><FONT COLOR="CC3333">Implementations</FONT></H3><A HREF="../../../src/vec/is/is/impls/block/block.c.html#ISRestoreIndices_Block">ISRestoreIndices_Block in src/vec/is/is/impls/block/block.c</A><BR>
<A HREF="../../../src/vec/is/is/impls/general/general.c.html#ISRestoreIndices_General">ISRestoreIndices_General in src/vec/is/is/impls/general/general.c</A><BR>
<A HREF="../../../src/vec/is/is/impls/stride/stride.c.html#ISRestoreIndices_Stride">ISRestoreIndices_Stride in src/vec/is/is/impls/stride/stride.c</A><BR>
<BR><A HREF="./index.html">Index of all IS routines</A>
<BR><A HREF="../../index.html">Table of Contents for all manual pages</A>
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