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<A NAME="MatCopy"><H1>MatCopy</H1></A>
Copys a matrix to another matrix.
<H3><FONT COLOR="#CC3333">Synopsis</FONT></H3>
<PRE>
#include "petscmat.h"
int MatCopy(Mat A,Mat B,MatStructure str)
</PRE>
Collective on <A HREF="../Mat/Mat.html#Mat">Mat</A>
<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>A </B></TD><TD>- the matrix
</TD></TR>
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>str </B></TD><TD>- SAME_NONZERO_PATTERN or DIFFERENT_NONZERO_PATTERN
</TD></TR></TABLE>
<P>
<H3><FONT COLOR="#CC3333">Output Parameter</FONT></H3>
<DT><B>B </B> -where the copy is put
<br>
<P>
<H3><FONT COLOR="#CC3333">Notes</FONT></H3>
If you use SAME_NONZERO_PATTERN then the two matrices had better have the
same nonzero pattern or the routine will crash.
<P>
<A HREF="../Mat/MatCopy.html#MatCopy">MatCopy</A>() copies the matrix entries of a matrix to another existing
matrix (after first zeroing the second matrix). A related routine is
<A HREF="../Mat/MatConvert.html#MatConvert">MatConvert</A>(), which first creates a new matrix and then copies the data.
<P>
<P>
<P>
<H3><FONT COLOR="#CC3333">See Also</FONT></H3>
<A HREF="../Mat/MatConvert.html#MatConvert">MatConvert</A>(), <A HREF="../Mat/MatDuplicate.html#MatDuplicate">MatDuplicate</A>()
<BR>
<P>
<P><B><P><B><FONT COLOR="#CC3333">Level:</FONT></B>intermediate
<BR><FONT COLOR="#CC3333">Location:</FONT></B><A HREF="../../../src/mat/interface/matrix.c.html#MatCopy">src/mat/interface/matrix.c</A>
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