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<div id="version" align=right><b>petsc-3.4.2 2013-07-02</b></div>
<A NAME="PetscSFGetMultiSF"><H1>PetscSFGetMultiSF</H1></A>
gets the inner SF implemeting gathers and scatters
<H3><FONT COLOR="#CC3333">Synopsis</FONT></H3>
<PRE>
#include "petscsf.h"
PetscErrorCode PetscSFGetMultiSF(PetscSF sf,PetscSF *multi)
</PRE>
Collective
<P>
<H3><FONT COLOR="#CC3333">Input Argument</FONT></H3>
<DT><B>sf </B> -star forest that may contain roots with 0 or with more than 1 vertex
<br>
<P>
<H3><FONT COLOR="#CC3333">Output Arguments</FONT></H3>
<DT><B>multi </B> -star forest with split roots, such that each root has degree exactly 1
<br>
<P>
<P>
<H3><FONT COLOR="#CC3333">Notes</FONT></H3>
<P>
In most cases, users should use <A HREF="../PetscSF/PetscSFGatherBegin.html#PetscSFGatherBegin">PetscSFGatherBegin</A>() and <A HREF="../PetscSF/PetscSFScatterBegin.html#PetscSFScatterBegin">PetscSFScatterBegin</A>() instead of manipulating multi
directly. Since multi satisfies the stronger condition that each entry in the global space has exactly one incoming
edge, it is a candidate for future optimization that might involve its removal.
<P>
<H3><FONT COLOR="#CC3333">See Also</FONT></H3>
<A HREF="../PetscSF/PetscSFSetGraph.html#PetscSFSetGraph">PetscSFSetGraph</A>(), <A HREF="../PetscSF/PetscSFGatherBegin.html#PetscSFGatherBegin">PetscSFGatherBegin</A>(), <A HREF="../PetscSF/PetscSFScatterBegin.html#PetscSFScatterBegin">PetscSFScatterBegin</A>()
<BR><P><B><P><B><FONT COLOR="#CC3333">Level:</FONT></B>developer
<BR><FONT COLOR="#CC3333">Location:</FONT></B><A HREF="../../../src/vec/is/sf/interface/sf.c.html#PetscSFGetMultiSF">src/vec/is/sf/interface/sf.c</A>
<BR><A HREF="./index.html">Index of all PetscSF routines</A>
<BR><A HREF="../../index.html">Table of Contents for all manual pages</A>
<BR><A HREF="../singleindex.html">Index of all manual pages</A>
<P><H3><FONT COLOR="#CC3333">Examples</FONT></H3>
<A HREF="../../../src/vec/is/sf/examples/tutorials/ex1.c.html">src/vec/is/sf/examples/tutorials/ex1.c.html</A><BR>
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