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<div id="version" align=right><b>petsc-3.4.2 2013-07-02</b></div>
<A NAME="KSPSetComputeOperators"><H1>KSPSetComputeOperators</H1></A>
set routine to compute the linear operators
<H3><FONT COLOR="#CC3333">Synopsis</FONT></H3>
<PRE>
#include "petscksp.h"
PetscErrorCode KSPSetComputeOperators(KSP ksp,PetscErrorCode (*func)(KSP,Mat,Mat,MatStructure*,void*),void *ctx)
</PRE>
Logically Collective
<P>
<H3><FONT COLOR="#CC3333">Input Arguments</FONT></H3>
<TABLE border="0" cellpadding="0" cellspacing="0">
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>ksp </B></TD><TD>- the <A HREF="../KSP/KSP.html#KSP">KSP</A> context
</TD></TR>
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>func </B></TD><TD>- function to compute the operators
</TD></TR>
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>ctx </B></TD><TD>- optional context
</TD></TR></TABLE>
<P>
<H3><FONT COLOR="#CC3333">Calling sequence of func</FONT></H3>
<pre>
func(<A HREF="../KSP/KSP.html#KSP">KSP</A> ksp,<A HREF="../Mat/Mat.html#Mat">Mat</A> *A,<A HREF="../Mat/Mat.html#Mat">Mat</A> *B,<A HREF="../Mat/MatStructure.html#MatStructure">MatStructure</A> *mstruct,void *ctx)
</pre>
<P>
<TABLE border="0" cellpadding="0" cellspacing="0">
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>ksp </B></TD><TD>- the <A HREF="../KSP/KSP.html#KSP">KSP</A> context
</TD></TR>
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>A </B></TD><TD>- the linear operator
</TD></TR>
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>B </B></TD><TD>- preconditioning matrix
</TD></TR>
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>mstruct </B></TD><TD>- flag indicating structure, same as in <A HREF="../KSP/KSPSetOperators.html#KSPSetOperators">KSPSetOperators</A>(), one of SAME_NONZERO_PATTERN,DIFFERENT_NONZERO_PATTERN,SAME_PRECONDITIONER
</TD></TR>
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>ctx </B></TD><TD>- optional user-provided context
</TD></TR></TABLE>
<P>
<P>
<H3><FONT COLOR="#CC3333">See Also</FONT></H3>
<A HREF="../KSP/KSPSetOperators.html#KSPSetOperators">KSPSetOperators</A>()
<BR><P><B><P><B><FONT COLOR="#CC3333">Level:</FONT></B>beginner
<BR><FONT COLOR="#CC3333">Location:</FONT></B><A HREF="../../../src/ksp/ksp/interface/itfunc.c.html#KSPSetComputeOperators">src/ksp/ksp/interface/itfunc.c</A>
<BR><A HREF="./index.html">Index of all KSP routines</A>
<BR><A HREF="../../index.html">Table of Contents for all manual pages</A>
<BR><A HREF="../singleindex.html">Index of all manual pages</A>
<P><H3><FONT COLOR="#CC3333">Examples</FONT></H3>
<A HREF="../../../src/ksp/ksp/examples/tutorials/ex25.c.html">src/ksp/ksp/examples/tutorials/ex25.c.html</A><BR>
<A HREF="../../../src/ksp/ksp/examples/tutorials/ex28.c.html">src/ksp/ksp/examples/tutorials/ex28.c.html</A><BR>
<A HREF="../../../src/ksp/ksp/examples/tutorials/ex29.c.html">src/ksp/ksp/examples/tutorials/ex29.c.html</A><BR>
<A HREF="../../../src/ksp/ksp/examples/tutorials/ex31.c.html">src/ksp/ksp/examples/tutorials/ex31.c.html</A><BR>
<A HREF="../../../src/ksp/ksp/examples/tutorials/ex32.c.html">src/ksp/ksp/examples/tutorials/ex32.c.html</A><BR>
<A HREF="../../../src/ksp/ksp/examples/tutorials/ex34.c.html">src/ksp/ksp/examples/tutorials/ex34.c.html</A><BR>
<A HREF="../../../src/ksp/ksp/examples/tutorials/ex45.c.html">src/ksp/ksp/examples/tutorials/ex45.c.html</A><BR>
<A HREF="../../../src/ksp/ksp/examples/tutorials/ex50.c.html">src/ksp/ksp/examples/tutorials/ex50.c.html</A><BR>
<A HREF="../../../src/ksp/ksp/examples/tutorials/ex22f.F.html">src/ksp/ksp/examples/tutorials/ex22f.F.html</A><BR>
<A HREF="../../../src/ksp/ksp/examples/tutorials/ex45f.F.html">src/ksp/ksp/examples/tutorials/ex45f.F.html</A><BR>
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