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<div id="version" align=right><b>petsc-3.7.5 2017-01-01</b></div>
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<A NAME="MatIsSymmetricKnown"><H1>MatIsSymmetricKnown</H1></A>
Checks the flag on the matrix to see if it is symmetric.
<H3><FONT COLOR="#CC3333">Synopsis</FONT></H3>
<PRE>
#include "petscmat.h"
PetscErrorCode MatIsSymmetricKnown(Mat A,PetscBool *set,PetscBool *flg)
</PRE>
Not Collective
<P>
<H3><FONT COLOR="#CC3333">Input Parameter</FONT></H3>
<DT><B>A </B> -the matrix to check
<br>
<P>
<H3><FONT COLOR="#CC3333">Output Parameters</FONT></H3>
<TABLE border="0" cellpadding="0" cellspacing="0">
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>set </B></TD><TD>- if the symmetric flag is set (this tells you if the next flag is valid)
</TD></TR>
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>flg </B></TD><TD>- the result
</TD></TR></TABLE>
<P>
<P>
<P>
Note: Does not check the matrix values directly, so this may return unknown (set = <A HREF="../Sys/PETSC_FALSE.html#PETSC_FALSE">PETSC_FALSE</A>). Use <A HREF="../Mat/MatIsSymmetric.html#MatIsSymmetric">MatIsSymmetric</A>()
if you want it explicitly checked
<P>
<H3><FONT COLOR="#CC3333">See Also</FONT></H3>
<A HREF="../Mat/MatTranspose.html#MatTranspose">MatTranspose</A>(), <A HREF="../Mat/MatIsTranspose.html#MatIsTranspose">MatIsTranspose</A>(), <A HREF="../Mat/MatIsHermitian.html#MatIsHermitian">MatIsHermitian</A>(), <A HREF="../Mat/MatIsStructurallySymmetric.html#MatIsStructurallySymmetric">MatIsStructurallySymmetric</A>(), <A HREF="../Mat/MatSetOption.html#MatSetOption">MatSetOption</A>(), <A HREF="../Mat/MatIsSymmetric.html#MatIsSymmetric">MatIsSymmetric</A>()
<BR><P><B><P><B><FONT COLOR="#CC3333">Level:</FONT></B>advanced
<BR><FONT COLOR="#CC3333">Location:</FONT></B><A HREF="../../../src/mat/interface/matrix.c.html#MatIsSymmetricKnown">src/mat/interface/matrix.c</A>
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