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<TITLE>PCSchurSetGradientOperator</TITLE>
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<A NAME="PCSchurSetGradientOperator"><H1>PCSchurSetGradientOperator</H1></A>
his function sets the operator and its transpose, which define the constraint manifold in the saddle-point problem. For instance, in the Stokes problem, this operator is the gradient, and its transpose is the divergence. It must be called prior to <A HREF="../PC/PCSetUp.html#PCSetUp">PCSetUp</A>(). 
<H3><FONT COLOR="#CC3333">Synopsis</FONT></H3>
<PRE>
#include "pc.h" 
int PCSchurSetGradientOperator(PC pc, int gradOp, int divOp)
</PRE>
Collective on <A HREF="../PC/PC.html#PC">PC</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>pc     </B></TD><TD>- The preconditioner context
</TD></TR>
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>gradOp </B></TD><TD>- The gradient operator
</TD></TR>
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>divOp  </B></TD><TD>- The divergence operator
</TD></TR></TABLE>
<P>

<P>
<H3><FONT COLOR="#CC3333">Keywords</FONT></H3>
schur, set, gradient
<BR>
<H3><FONT COLOR="#CC3333">See Also</FONT></H3>
<A HREF="../PC/PCSchurGetIterationNumber.html#PCSchurGetIterationNumber">PCSchurGetIterationNumber</A>()
<BR><P><B><P><B><FONT COLOR="#CC3333">Level:</FONT></B>intermediate
<BR><FONT COLOR="#CC3333">Location:</FONT></B><A HREF="../../../src/sles/pc/impls/schur/schur.c.html#PCSchurSetGradientOperator">src/sles/pc/impls/schur/schur.c</A>
<BR><A HREF="./index.html">Index of all PC routines</A>
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