|
|
|
|
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2 Final//EN">
|
|
|
|
|
|
|
|
|
|
<!--Converted with LaTeX2HTML 2002-2-1 (1.71)
|
|
|
|
|
original version by: Nikos Drakos, CBLU, University of Leeds
|
|
|
|
|
* revised and updated by: Marcus Hennecke, Ross Moore, Herb Swan
|
|
|
|
|
* with significant contributions from:
|
|
|
|
|
Jens Lippmann, Marek Rouchal, Martin Wilck and others -->
|
|
|
|
|
<HTML>
|
|
|
|
|
<HEAD>
|
|
|
|
|
<TITLE>Subroutine mld_precinit</TITLE>
|
|
|
|
|
<META NAME="description" CONTENT="Subroutine mld_precinit">
|
|
|
|
|
<META NAME="keywords" CONTENT="userhtml">
|
|
|
|
|
<META NAME="resource-type" CONTENT="document">
|
|
|
|
|
<META NAME="distribution" CONTENT="global">
|
|
|
|
|
|
|
|
|
|
<META NAME="Generator" CONTENT="LaTeX2HTML v2002-2-1">
|
|
|
|
|
<META HTTP-EQUIV="Content-Style-Type" CONTENT="text/css">
|
|
|
|
|
|
|
|
|
|
<LINK REL="STYLESHEET" HREF="userhtml.css">
|
|
|
|
|
|
|
|
|
|
<LINK REL="next" HREF="node17.html">
|
|
|
|
|
<LINK REL="previous" HREF="node15.html">
|
|
|
|
|
<LINK REL="up" HREF="node15.html">
|
|
|
|
|
<LINK REL="next" HREF="node17.html">
|
|
|
|
|
</HEAD>
|
|
|
|
|
|
|
|
|
|
<BODY >
|
|
|
|
|
<!--Navigation Panel-->
|
|
|
|
|
<A NAME="tex2html257"
|
|
|
|
|
HREF="node17.html">
|
|
|
|
|
<IMG WIDTH="37" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="next"
|
|
|
|
|
SRC="file:/usr/share/latex2html/icons/next.png"></A>
|
|
|
|
|
<A NAME="tex2html253"
|
|
|
|
|
HREF="node15.html">
|
|
|
|
|
<IMG WIDTH="26" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="up"
|
|
|
|
|
SRC="file:/usr/share/latex2html/icons/up.png"></A>
|
|
|
|
|
<A NAME="tex2html247"
|
|
|
|
|
HREF="node15.html">
|
|
|
|
|
<IMG WIDTH="63" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="previous"
|
|
|
|
|
SRC="file:/usr/share/latex2html/icons/prev.png"></A>
|
|
|
|
|
<A NAME="tex2html255"
|
|
|
|
|
HREF="node2.html">
|
|
|
|
|
<IMG WIDTH="65" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="contents"
|
|
|
|
|
SRC="file:/usr/share/latex2html/icons/contents.png"></A>
|
|
|
|
|
<BR>
|
|
|
|
|
<B> Next:</B> <A NAME="tex2html258"
|
|
|
|
|
HREF="node17.html">Subroutine mld_precset</A>
|
|
|
|
|
<B> Up:</B> <A NAME="tex2html254"
|
|
|
|
|
HREF="node15.html">User Interface</A>
|
|
|
|
|
<B> Previous:</B> <A NAME="tex2html248"
|
|
|
|
|
HREF="node15.html">User Interface</A>
|
|
|
|
|
<B> <A NAME="tex2html256"
|
|
|
|
|
HREF="node2.html">Contents</A></B>
|
|
|
|
|
<BR>
|
|
|
|
|
<BR>
|
|
|
|
|
<!--End of Navigation Panel-->
|
|
|
|
|
|
|
|
|
|
<H2><A NAME="SECTION00081000000000000000"></A><A NAME="sec:precinit"></A>
|
|
|
|
|
<BR>
|
|
|
|
|
Subroutine mld_precinit
|
|
|
|
|
</H2>
|
|
|
|
|
|
|
|
|
|
<P>
|
|
|
|
|
<DIV ALIGN="CENTER">
|
|
|
|
|
<code>mld_precinit(p,ptype,info)</code>
|
|
|
|
|
<BR><code>mld_precinit(p,ptype,info,nlev)</code>
|
|
|
|
|
<BR>
|
|
|
|
|
</DIV>
|
|
|
|
|
|
|
|
|
|
<P>
|
|
|
|
|
This routine allocates and initializes the preconditioner data structure,
|
|
|
|
|
according to the preconditioner type chosen by the user.
|
|
|
|
|
|
|
|
|
|
<P>
|
|
|
|
|
<FONT SIZE="+1"><B>Arguments</B></FONT>
|
|
|
|
|
|
|
|
|
|
<P>
|
|
|
|
|
<TABLE CELLPADDING=3>
|
|
|
|
|
<TR><TD ALIGN="LEFT" VALIGN="TOP" WIDTH=34><code>p</code></TD>
|
|
|
|
|
<TD ALIGN="LEFT" VALIGN="TOP" WIDTH=340><code>type(mld_</code><I>x</I><code>prec_type), intent(inout)</code>.</TD>
|
|
|
|
|
</TR>
|
|
|
|
|
<TR><TD ALIGN="LEFT" VALIGN="TOP" WIDTH=34> </TD>
|
|
|
|
|
<TD ALIGN="LEFT" VALIGN="TOP" WIDTH=340>The preconditioner data structure. Note that <I>x</I>
|
|
|
|
|
must be chosen according to the real/complex, single/double
|
|
|
|
|
precision version of MLD2P4 under use.</TD>
|
|
|
|
|
</TR>
|
|
|
|
|
<TR><TD ALIGN="LEFT" VALIGN="TOP" WIDTH=34><code>ptype</code></TD>
|
|
|
|
|
<TD ALIGN="LEFT" VALIGN="TOP" WIDTH=340><code>character(len=*), intent(in)</code>.</TD>
|
|
|
|
|
</TR>
|
|
|
|
|
<TR><TD ALIGN="LEFT" VALIGN="TOP" WIDTH=34> </TD>
|
|
|
|
|
<TD ALIGN="LEFT" VALIGN="TOP" WIDTH=340>The type of preconditioner. Its values are specified
|
|
|
|
|
in Table <A HREF="#tab:precinit">1</A>.</TD>
|
|
|
|
|
</TR>
|
|
|
|
|
<TR><TD ALIGN="LEFT" VALIGN="TOP" WIDTH=34> </TD>
|
|
|
|
|
<TD ALIGN="LEFT" VALIGN="TOP" WIDTH=340>Note that the strings are case insensitive.</TD>
|
|
|
|
|
</TR>
|
|
|
|
|
<TR><TD ALIGN="LEFT" VALIGN="TOP" WIDTH=34><code>info</code></TD>
|
|
|
|
|
<TD ALIGN="LEFT" VALIGN="TOP" WIDTH=340><code>integer, intent(out)</code>.</TD>
|
|
|
|
|
</TR>
|
|
|
|
|
<TR><TD ALIGN="LEFT" VALIGN="TOP" WIDTH=34> </TD>
|
|
|
|
|
<TD ALIGN="LEFT" VALIGN="TOP" WIDTH=340>Error code. If no error, 0 is returned. See Section <A HREF="node22.html#sec:errors">7</A> for details.</TD>
|
|
|
|
|
</TR>
|
|
|
|
|
<TR><TD ALIGN="LEFT" VALIGN="TOP" WIDTH=34><code>nlev</code></TD>
|
|
|
|
|
<TD ALIGN="LEFT" VALIGN="TOP" WIDTH=340><code>integer, optional, intent(in)</code>.</TD>
|
|
|
|
|
</TR>
|
|
|
|
|
<TR><TD ALIGN="LEFT" VALIGN="TOP" WIDTH=34> </TD>
|
|
|
|
|
<TD ALIGN="LEFT" VALIGN="TOP" WIDTH=340>The number of levels of the multilevel preconditioner.
|
|
|
|
|
If <code>nlev</code> is not present and <code>ptype</code>=<code>'ML'</code>, <code>'ml'</code>,
|
|
|
|
|
then <code>nlev</code>=2 is assumed. Otherwise, <code>nlev</code> is ignored.</TD>
|
|
|
|
|
</TR>
|
|
|
|
|
</TABLE>
|
|
|
|
|
|
|
|
|
|
<P>
|
|
|
|
|
|
|
|
|
|
<P>
|
|
|
|
|
<HR>
|
|
|
|
|
<!--Navigation Panel-->
|
|
|
|
|
<A NAME="tex2html257"
|
|
|
|
|
HREF="node17.html">
|
|
|
|
|
<IMG WIDTH="37" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="next"
|
|
|
|
|
SRC="file:/usr/share/latex2html/icons/next.png"></A>
|
|
|
|
|
<A NAME="tex2html253"
|
|
|
|
|
HREF="node15.html">
|
|
|
|
|
<IMG WIDTH="26" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="up"
|
|
|
|
|
SRC="file:/usr/share/latex2html/icons/up.png"></A>
|
|
|
|
|
<A NAME="tex2html247"
|
|
|
|
|
HREF="node15.html">
|
|
|
|
|
<IMG WIDTH="63" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="previous"
|
|
|
|
|
SRC="file:/usr/share/latex2html/icons/prev.png"></A>
|
|
|
|
|
<A NAME="tex2html255"
|
|
|
|
|
HREF="node2.html">
|
|
|
|
|
<IMG WIDTH="65" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="contents"
|
|
|
|
|
SRC="file:/usr/share/latex2html/icons/contents.png"></A>
|
|
|
|
|
<BR>
|
|
|
|
|
<B> Next:</B> <A NAME="tex2html258"
|
|
|
|
|
HREF="node17.html">Subroutine mld_precset</A>
|
|
|
|
|
<B> Up:</B> <A NAME="tex2html254"
|
|
|
|
|
HREF="node15.html">User Interface</A>
|
|
|
|
|
<B> Previous:</B> <A NAME="tex2html248"
|
|
|
|
|
HREF="node15.html">User Interface</A>
|
|
|
|
|
<B> <A NAME="tex2html256"
|
|
|
|
|
HREF="node2.html">Contents</A></B>
|
|
|
|
|
<!--End of Navigation Panel-->
|
|
|
|
|
|
|
|
|
|
</BODY>
|
|
|
|
|
</HTML>
|
