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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="TaoComputeDualVariables"><H1>TaoComputeDualVariables</H1></A>
Computes the dual vectors corresponding to the bounds of the variables
<H3><FONT COLOR="#CC3333">Synopsis</FONT></H3>
<PRE>
#include "petsctao.h"
PetscErrorCode TaoComputeDualVariables(Tao tao, Vec DL, Vec DU)
</PRE>
Collective on <A HREF="../Tao/Tao.html#Tao">Tao</A>
<P>
<H3><FONT COLOR="#CC3333">Input Parameters</FONT></H3>
<DT><B>tao </B> -the <A HREF="../Tao/Tao.html#Tao">Tao</A> context
<br>
<P>
<H3><FONT COLOR="#CC3333">Output Parameter</FONT></H3>
<TABLE border="0" cellpadding="0" cellspacing="0">
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>DL </B></TD><TD>- dual variable vector for the lower bounds
</TD></TR>
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>DU </B></TD><TD>- dual variable vector for the upper bounds
</TD></TR></TABLE>
<P>
<P>
<H3><FONT COLOR="#CC3333">Note</FONT></H3>
DL and DU should be created before calling this routine. If calling
this routine after using an unconstrained solver, DL and DU are set to all
zeros.
<P>
<P>
<H3><FONT COLOR="#CC3333">See Also</FONT></H3>
<A HREF="../Tao/TaoComputeObjective.html#TaoComputeObjective">TaoComputeObjective</A>(), <A HREF="../Tao/TaoSetVariableBounds.html#TaoSetVariableBounds">TaoSetVariableBounds</A>()
<BR><P><B><P><B><FONT COLOR="#CC3333">Level:</FONT></B>advanced
<BR><FONT COLOR="#CC3333">Location:</FONT></B><A HREF="../../../src/tao/interface/taosolver_bounds.c.html#TaoComputeDualVariables">src/tao/interface/taosolver_bounds.c</A>
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