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<TITLE>MatAYPX</TITLE>
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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="MatAYPX"><H1>MatAYPX</H1></A>
Computes Y = a*Y + X.
<H3><FONT COLOR="#CC3333">Synopsis</FONT></H3>
<PRE>
#include "petscmat.h"
<A HREF="../Sys/PetscErrorCode.html#PetscErrorCode">PetscErrorCode</A> <A HREF="../Mat/MatAYPX.html#MatAYPX">MatAYPX</A>(<A HREF="../Mat/Mat.html#Mat">Mat</A> Y,<A HREF="../Sys/PetscScalar.html#PetscScalar">PetscScalar</A> a,<A HREF="../Mat/Mat.html#Mat">Mat</A> X,<A HREF="../Mat/MatStructure.html#MatStructure">MatStructure</A> str)
</PRE>
Logically 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 <A HREF="../Sys/PetscScalar.html#PetscScalar">PetscScalar</A> multiplier
</TD></TR>
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>Y </B></TD><TD>- the first matrix
</TD></TR>
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>X </B></TD><TD>- the second matrix
</TD></TR>
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>str </B></TD><TD>- either <A HREF="../Mat/MatStructure.html#MatStructure">SAME_NONZERO_PATTERN</A>, <A HREF="../Mat/MatStructure.html#MatStructure">DIFFERENT_NONZERO_PATTERN</A> or <A HREF="../Mat/MatStructure.html#MatStructure">SUBSET_NONZERO_PATTERN</A>
</TD></TR></TABLE>
<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></B><H3><FONT COLOR="#CC3333">Level</FONT></H3>intermediate<BR>
<H3><FONT COLOR="#CC3333">Location</FONT></H3>
</B><A HREF="../../../src/mat/utils/axpy.c.html#MatAYPX">src/mat/utils/axpy.c</A>
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