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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="KSPFCGSetTruncationType"><H1>KSPFCGSetTruncationType</H1></A>
specify how many of its stored previous directions FCG uses during orthoganalization
<H3><FONT COLOR="#CC3333">Synopsis</FONT></H3>
<PRE>
#include "petscksp.h"
PetscErrorCode KSPFCGSetTruncationType(KSP ksp,KSPFCDTruncationType truncstrat)
</PRE>
Logically Collective on <A HREF="../KSP/KSP.html#KSP">KSP</A>
<P>
KSP_FCD_TRUNC_TYPE_STANDARD uses all (up to mmax) stored directions
KSP_FCD_TRUNC_TYPE_NOTAY uses the last max(1,mod(i,mmax)) stored directions at iteration i=0,1,..
<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>ksp </B></TD><TD>- the Krylov space context
</TD></TR>
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>truncstrat </B></TD><TD>- the choice of strategy
</TD></TR></TABLE>
<P>
<P>
<H3><FONT COLOR="#CC3333">Options Database</FONT></H3>
<DT><B>-ksp_fcg_truncation_type <standard, notay> </B> -specify how many of its stored previous directions FCG uses during orthoganalization
<br>
<P>
.seealso: <A HREF="../KSP/KSPFCDTruncationType.html#KSPFCDTruncationType">KSPFCDTruncationType</A>, <A HREF="../KSP/KSPFCGGetTruncationType.html#KSPFCGGetTruncationType">KSPFCGGetTruncationType</A>
<P><B><P><B><FONT COLOR="#CC3333">Level:</FONT></B>intermediate
<BR><FONT COLOR="#CC3333">Location:</FONT></B><A HREF="../../../src/ksp/ksp/impls/fcg/fcg.c.html#KSPFCGSetTruncationType">src/ksp/ksp/impls/fcg/fcg.c</A>
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