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<TITLE>NEPSetOptionsPrefix</TITLE>
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<BODY BGCOLOR="FFFFFF">
<H1>NEPSetOptionsPrefix</H1>
Sets the prefix used for searching for all <A HREF="../NEP/NEP.html#NEP">NEP</A> options in the database.
<H3><FONT COLOR="#883300">Synopsis</FONT></H3>
<PRE>
#include "slepcnep.h"
PetscErrorCode NEPSetOptionsPrefix(NEP nep,const char *prefix)
</PRE>
Logically Collective on <A HREF="../NEP/NEP.html#NEP">NEP</A>
<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>nep </B></TD><TD> - the nonlinear eigensolver context
</TD></TR>
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>prefix </B></TD><TD> - the prefix string to prepend to all <A HREF="../NEP/NEP.html#NEP">NEP</A> option requests
</TD></TR></TABLE>
<P>
<H3><FONT COLOR="#883300">Notes</FONT></H3>
A hyphen (-) must NOT be given at the beginning of the prefix name.
The first character of all runtime options is AUTOMATICALLY the
hyphen.
<P>
For example, to distinguish between the runtime options for two
different <A HREF="../NEP/NEP.html#NEP">NEP</A> contexts, one could call
<PRE>
<A HREF="../NEP/NEPSetOptionsPrefix.html#NEPSetOptionsPrefix">NEPSetOptionsPrefix</A>(nep1,"neig1_")
<A HREF="../NEP/NEPSetOptionsPrefix.html#NEPSetOptionsPrefix">NEPSetOptionsPrefix</A>(nep2,"neig2_")
</PRE>
<P>
<P>
<H3><FONT COLOR="#883300">See Also</FONT></H3>
<A HREF="../NEP/NEPAppendOptionsPrefix.html#NEPAppendOptionsPrefix">NEPAppendOptionsPrefix</A>(), <A HREF="../NEP/NEPGetOptionsPrefix.html#NEPGetOptionsPrefix">NEPGetOptionsPrefix</A>()
<BR><P><B><FONT COLOR="#883300">Location: </FONT></B><A HREF="../../../src/nep/interface/nepopts.c.html#NEPSetOptionsPrefix">src/nep/interface/nepopts.c</A>
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