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<A NAME="MatAYPX"><H1>MatAYPX</H1></A>
Computes Y = X + a*Y.
<H3><FONT COLOR="#CC3333">Synopsis</FONT></H3>
<PRE>
#include "petscmat.h"
int MatAYPX(const PetscScalar *a,Mat X,Mat Y)
</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>X,Y </B></TD><TD>- the matrices
</TD></TR>
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>a </B></TD><TD>- the <A HREF="../Sys/PetscScalar.html#PetscScalar">PetscScalar</A> multiplier
</TD></TR></TABLE>
<P>
Contributed by: Matthew Knepley
<P>
<H3><FONT COLOR="#CC3333">Notes</FONT></H3>
This routine currently uses the <A HREF="../Mat/MatAXPY.html#MatAXPY">MatAXPY</A>() implementation.
<P>
This is slow, if you need it fast send email to petsc-maint@mcs.anl.gov
<P>
<P>
<H3><FONT COLOR="#CC3333">Keywords</FONT></H3>
matrix, add
<BR>
<P>
<H3><FONT COLOR="#CC3333">See Also</FONT></H3>
<A HREF="../Mat/MatAXPY.html#MatAXPY">MatAXPY</A>()
<BR><P><B><P><B><FONT COLOR="#CC3333">Level:</FONT></B>intermediate
<BR><FONT COLOR="#CC3333">Location:</FONT></B><A HREF="../../../src/mat/utils/axpy.c.html#MatAYPX">src/mat/utils/axpy.c</A>
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