<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2 Final//EN">

<!--Converted with LaTeX2HTML 2012 (1.2)
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 v2012">
<META HTTP-EQUIV="Content-Style-Type" CONTENT="text/css">

<LINK REL="STYLESHEET" HREF="userhtml.css">

<LINK REL="next" HREF="node18.html">
<LINK REL="previous" HREF="node16.html">
<LINK REL="up" HREF="node16.html">
<LINK REL="next" HREF="node18.html">
</HEAD>

<BODY >
<!--Navigation Panel-->
<A NAME="tex2html280"
  HREF="node18.html">
<IMG WIDTH="37" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="next" SRC="next.png"></A> 
<A NAME="tex2html276"
  HREF="node16.html">
<IMG WIDTH="26" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="up" SRC="up.png"></A> 
<A NAME="tex2html270"
  HREF="node16.html">
<IMG WIDTH="63" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="previous" SRC="prev.png"></A> 
<A NAME="tex2html278"
  HREF="node2.html">
<IMG WIDTH="65" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="contents" SRC="contents.png"></A>  
<BR>
<B> Next:</B> <A NAME="tex2html281"
  HREF="node18.html">Subroutine mld_precset</A>
<B> Up:</B> <A NAME="tex2html277"
  HREF="node16.html">User Interface</A>
<B> Previous:</B> <A NAME="tex2html271"
  HREF="node16.html">User Interface</A>
 &nbsp; <B>  <A NAME="tex2html279"
  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>&nbsp;</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>&nbsp;</TD>
<TD ALIGN="LEFT" VALIGN="TOP" WIDTH=340>The type of preconditioner. Its values are specified
              in Table&nbsp;<A HREF="#tab:precinit">1</A>.</TD>
</TR>
<TR><TD ALIGN="LEFT" VALIGN="TOP" WIDTH=34>&nbsp;</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>&nbsp;</TD>
<TD ALIGN="LEFT" VALIGN="TOP" WIDTH=340>Error code. If no error, 0 is returned. See Section&nbsp;<A HREF="node25.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>&nbsp;</TD>
<TD ALIGN="LEFT" VALIGN="TOP" WIDTH=340>The number of levels of the multilevel
                preconditioner. This optional argument is deprecated,
                new codes should set the number of levels with <code>mld_precset</code>.</TD>
</TR>
<TR><TD ALIGN="LEFT" VALIGN="TOP" WIDTH=34></TD>
<TD ALIGN="LEFT" VALIGN="TOP" WIDTH=340>&nbsp;</TD>
</TR>
</TABLE>

<P>

<P>
<HR>
<!--Navigation Panel-->
<A NAME="tex2html280"
  HREF="node18.html">
<IMG WIDTH="37" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="next" SRC="next.png"></A> 
<A NAME="tex2html276"
  HREF="node16.html">
<IMG WIDTH="26" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="up" SRC="up.png"></A> 
<A NAME="tex2html270"
  HREF="node16.html">
<IMG WIDTH="63" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="previous" SRC="prev.png"></A> 
<A NAME="tex2html278"
  HREF="node2.html">
<IMG WIDTH="65" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="contents" SRC="contents.png"></A>  
<BR>
<B> Next:</B> <A NAME="tex2html281"
  HREF="node18.html">Subroutine mld_precset</A>
<B> Up:</B> <A NAME="tex2html277"
  HREF="node16.html">User Interface</A>
<B> Previous:</B> <A NAME="tex2html271"
  HREF="node16.html">User Interface</A>
 &nbsp; <B>  <A NAME="tex2html279"
  HREF="node2.html">Contents</A></B> 
<!--End of Navigation Panel-->

</BODY>
</HTML>