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<div id="version" align=right><b>petsc-3.10.3 2018-12-18</b></div>
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<A NAME="PCFieldSplitSchurGetS"><H1>PCFieldSplitSchurGetS</H1></A>
extract the MatSchurComplement object used by this <A HREF="../PC/PC.html#PC">PC</A> in case it needs to be configured separately
<H3><FONT COLOR="#CC3333">Synopsis</FONT></H3>
<PRE>
#include "petscpc.h"
<A HREF="../Sys/PetscErrorCode.html#PetscErrorCode">PetscErrorCode</A> <A HREF="../PC/PCFieldSplitSchurGetS.html#PCFieldSplitSchurGetS">PCFieldSplitSchurGetS</A>(<A HREF="../PC/PC.html#PC">PC</A> pc,<A HREF="../Mat/Mat.html#Mat">Mat</A> *S)
</PRE>
Not collective
<P>
<H3><FONT COLOR="#CC3333">Input Parameter</FONT></H3>
<DT><B>pc </B> -the preconditioner context
<br>
<P>
<H3><FONT COLOR="#CC3333">Output Parameter</FONT></H3>
<DT><B>S </B> -the Schur complement matrix
<br>
<P>
<H3><FONT COLOR="#CC3333">Notes</FONT></H3>
This matrix should not be destroyed using <A HREF="../Mat/MatDestroy.html#MatDestroy">MatDestroy</A>(); rather, use <A HREF="../PC/PCFieldSplitSchurRestoreS.html#PCFieldSplitSchurRestoreS">PCFieldSplitSchurRestoreS</A>().
<P>
<P>
<H3><FONT COLOR="#CC3333">See Also</FONT></H3>
<A HREF="../PC/PCFieldSplitGetSubKSP.html#PCFieldSplitGetSubKSP">PCFieldSplitGetSubKSP</A>(), <A HREF="../PC/PCFIELDSPLIT.html#PCFIELDSPLIT">PCFIELDSPLIT</A>, <A HREF="../PC/PCFieldSplitSchurPreType.html#PCFieldSplitSchurPreType">PCFieldSplitSchurPreType</A>, <A HREF="../PC/PCFieldSplitSetSchurPre.html#PCFieldSplitSetSchurPre">PCFieldSplitSetSchurPre</A>(), MatSchurComplement, <A HREF="../PC/PCFieldSplitSchurRestoreS.html#PCFieldSplitSchurRestoreS">PCFieldSplitSchurRestoreS</A>()
<BR>
<P>
<P><B></B><H3><FONT COLOR="#CC3333">Level</FONT></H3>advanced<BR>
<H3><FONT COLOR="#CC3333">Location</FONT></H3>
</B><A HREF="../../../src/ksp/pc/impls/fieldsplit/fieldsplit.c.html#PCFieldSplitSchurGetS">src/ksp/pc/impls/fieldsplit/fieldsplit.c</A>
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