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<div id="version" align=right><b>slepc-3.22.2 2024-12-02</b></div>
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<H1>MFNSetOperator</H1>
Sets the matrix for which the matrix function is to be computed.
<H3><FONT COLOR="#883300">Synopsis</FONT></H3>
<PRE>
#include "slepcmfn.h"
<A HREF="https://petsc.org/release/manualpages/Sys/PetscErrorCode.html#PetscErrorCode">PetscErrorCode</A> <A HREF="../MFN/MFNSetOperator.html#MFNSetOperator">MFNSetOperator</A>(<A HREF="../MFN/MFN.html#MFN">MFN</A> mfn,<A HREF="https://petsc.org/release/manualpages/Mat/Mat.html#Mat">Mat</A> A)
</PRE>
Collective
<P>
<H3><FONT COLOR="#883300">Input Parameters</FONT></H3>
<TABLE border="0" cellpadding="0" cellspacing="0">
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>mfn </B></TD><TD> - the matrix function context
</TD></TR>
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>A </B></TD><TD> - the problem matrix
</TD></TR></TABLE>
<P>
<H3><FONT COLOR="#883300">Notes</FONT></H3>
It must be called before <A HREF="../MFN/MFNSetUp.html#MFNSetUp">MFNSetUp</A>(). If it is called again after <A HREF="../MFN/MFNSetUp.html#MFNSetUp">MFNSetUp</A>() then
the <A HREF="../MFN/MFN.html#MFN">MFN</A> object is reset.
<P>
<P>
<H3><FONT COLOR="#883300">See Also</FONT></H3>
<A HREF="../MFN/MFNSolve.html#MFNSolve">MFNSolve</A>(), <A HREF="../MFN/MFNSetUp.html#MFNSetUp">MFNSetUp</A>(), <A HREF="../MFN/MFNReset.html#MFNReset">MFNReset</A>()
<BR><P><B></B><H3><FONT COLOR="#883300">Level</FONT></H3>beginner<BR>
<H3><FONT COLOR="#883300">Location</FONT></H3>
</B><A HREF="../../../src/mfn/interface/mfnsetup.c.html#MFNSetOperator">src/mfn/interface/mfnsetup.c</A>
<P><H3><FONT COLOR="#883300">Examples</FONT></H3>
<A HREF="../../../src/eps/tutorials/ex36.c.html">src/eps/tutorials/ex36.c</A><BR>
<A HREF="../../../src/mfn/tutorials/ex23.c.html">src/mfn/tutorials/ex23.c</A><BR>
<A HREF="../../../src/mfn/tutorials/ex23f.F90.html">src/mfn/tutorials/ex23f.F90</A><BR>
<A HREF="../../../src/mfn/tutorials/ex26.c.html">src/mfn/tutorials/ex26.c</A><BR>
<A HREF="../../../src/mfn/tutorials/ex37.c.html">src/mfn/tutorials/ex37.c</A><BR>
<A HREF="../../../src/mfn/tutorials/ex39.c.html">src/mfn/tutorials/ex39.c</A><BR>
<BR><BR><A HREF="./index.html">Index of all MFN routines</A>
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