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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML3.2 EN">
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<A NAME="MatShellGetContext"><H1>MatShellGetContext</H1></A>
Returns the user-provided context associated with a shell matrix.
<H3><FONT COLOR="#CC3333">Synopsis</FONT></H3>
<PRE>
#include "petscmat.h"
PetscErrorCode PETSCMAT_DLLEXPORT MatShellGetContext(Mat mat,void **ctx)
</PRE>
Not Collective
<P>
<H3><FONT COLOR="#CC3333">Input Parameter</FONT></H3>
<DT><B>mat </B> -the matrix, should have been created with <A HREF="../Mat/MatCreateShell.html#MatCreateShell">MatCreateShell</A>()
<br>
<P>
<H3><FONT COLOR="#CC3333">Output Parameter</FONT></H3>
<DT><B>ctx </B> -the user provided context
<br>
<P>
<P>
<H3><FONT COLOR="#CC3333">C++ variants</FONT></H3><TABLE border="0" cellpadding="0" cellspacing="0">
<TR><TD WIDTH=40></TD><TD> void* MatShellGetContext(Mat A)<TD WIDTH=20></TD><TD>-></TD><TD WIDTH=20></TD><TD>MatShellGetContext(A,&t); return t;</TR></TD>
</TABLE>
<H3><FONT COLOR="#CC3333">Notes</FONT></H3>
This routine is intended for use within various shell matrix routines,
as set with <A HREF="../Mat/MatShellSetOperation.html#MatShellSetOperation">MatShellSetOperation</A>().
<P>
<H3><FONT COLOR="#CC3333">Keywords</FONT></H3>
matrix, shell, get, context
<BR>
<P>
<H3><FONT COLOR="#CC3333">See Also</FONT></H3>
<A HREF="../Mat/MatCreateShell.html#MatCreateShell">MatCreateShell</A>(), <A HREF="../Mat/MatShellSetOperation.html#MatShellSetOperation">MatShellSetOperation</A>(), <A HREF="../Mat/MatShellSetContext.html#MatShellSetContext">MatShellSetContext</A>()
<BR><P><B><P><B><FONT COLOR="#CC3333">Level:</FONT></B>advanced
<BR><FONT COLOR="#CC3333">Location:</FONT></B><A HREF="../../../src/mat/impls/shell/shell.c.html#MatShellGetContext">src/mat/impls/shell/shell.c</A>
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