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<!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML 3.2 Final//FR"><!-- Converted with LaTeX2HTML 95.1 (Fri Jan 20 1995) --><!-- by Nikos Drakos (nikos@cbl.leeds.ac.uk), CBLU, University of Leeds --><!-- Modified Simulog 03/97 --><HTML><HEAD><TITLE>4.3 CCAMAT</TITLE><LINK REL=STYLESHEET TYPE="text/css" HREF="./Modulef.css" TITLE="Modulef CSS"><meta name="description" value="4.3 CCAMAT"><meta name="keywords" value="Guide5"><meta name="resource-type" value="document"><meta name="distribution" value="global"></HEAD><BODY BGCOLOR="#FFFFFF"><P> <IMG SRC="../icons/smallmod.gif" WIDTH=211 HEIGHT=50 ALIGN=BOTTOM ALT="Modulef"><A NAME=tex2html604 HREF="node24.html"><IMG BORDER=0 ALIGN=BOTTOM SRC="../icons/previous_motif.gif" ALT="previous"></A><A NAME=tex2html610 HREF="node22.html"><IMG BORDER=0 ALIGN=BOTTOM SRC="../icons/up_motif.gif" ALT="up"></A><A NAME=tex2html612 HREF="node26.html"><IMG BORDER=0 ALIGN=BOTTOM SRC="../icons/next_motif.gif" ALT="next"></A><A NAME=tex2html614 HREF="node2.html"><IMG BORDER=0 ALIGN=BOTTOM SRC="../icons/contents_motif.gif" ALT="contents"></A><A HREF="../Guide5-18/node25.html"><IMG BORDER=0 SRC="../icons/zoom18.gif" ALIGN=BOTTOM ALT="[BIG]"></A><A HREF="../Guide5-14/node25.html"><IMG BORDER=0 SRC="../icons/zoom14.gif" ALIGN=BOTTOM ALT="[Normal]"></A><A HREF="../Guide5-10/node25.html"><IMG BORDER=0 SRC="../icons/zoom10.gif" ALIGN=BOTTOM ALT="[small]"></A><BR><B> Next: </B> <A NAME=tex2html613 HREF="node26.html">4.4 CCMUA</A><B>Up: </B> <A NAME=tex2html611 HREF="node22.html">4 Utilities</A><B> Prev: </B> <A NAME=tex2html605 HREF="node24.html">4.2 AMAT2</A><B><A HREF="node2.html" >Contents</A></B><HR SIZE=3 WIDTH="75%"><H1><A NAME=SECTION04430000000000000000>4.3 CCAMAT</A></H1><P><DL COMPACT><DT>Aim:<DD> Compress <A NAME=2017> </A> array AMAT6 in structure AMAT, containing the coefficients of matrix <b>A</b>. It corresponds to eliminating the coefficients whose absolute value are too small according to the followingcriterion: <DIV ALIGN=center><IMG BORDER=0 ALIGN=MIDDLE ALT="" SRC="img75.gif"></DIV><P>This procedure enables us to reduce the size of an existing AMAT structure to that which is strictly necessary, and can in particularly be used for the preconditioning matrix.<P><DT>Utilization:<DD> <P><UL><LI> dimension array M (in the blank common),<LI> call INITI. </UL><P>Call the module:<P><PRE> CALL CCAMAT(M,RAPORT,NFAMAE,NIAMAE,NFAMAS,NIAMAS)</PRE><P>where:<UL><LI> M: the super array,<LI> RAPORT: the value of parameter <IMG BORDER=0 ALIGN=BOTTOM ALT="" SRC="img67.gif">,<LI> NFAMAE: the number of the support file of I.D.S. AMAT,<LI> NIAMAE: its level number,<LI> NFAMAS: the number of the support file of O.D.S. AMAT,<LI> NIAMAS: its level number, (the O.D.S. can be distinct from the I.D.S.).</UL> </DL><P><HR SIZE=3 WIDTH="75%"><IMG SRC="../icons/smallmod.gif" WIDTH=211 HEIGHT=50 ALIGN=BOTTOM ALT="Modulef"><A NAME=tex2html604 HREF="node24.html"><IMG BORDER=0 ALIGN=BOTTOM SRC="../icons/previous_motif.gif" ALT="previous"></A><A NAME=tex2html610 HREF="node22.html"><IMG BORDER=0 ALIGN=BOTTOM SRC="../icons/up_motif.gif" ALT="up"></A><A NAME=tex2html612 HREF="node26.html"><IMG BORDER=0 ALIGN=BOTTOM SRC="../icons/next_motif.gif" ALT="next"></A><A NAME=tex2html614 HREF="node2.html"><IMG BORDER=0 ALIGN=BOTTOM SRC="../icons/contents_motif.gif" ALT="contents"></A><A HREF="../Guide5-18/node25.html"><IMG BORDER=0 SRC="../icons/zoom18.gif" ALIGN=BOTTOM ALT="[BIG]"></A><A HREF="../Guide5-14/node25.html"><IMG BORDER=0 SRC="../icons/zoom14.gif" ALIGN=BOTTOM ALT="[Normal]"></A><A HREF="../Guide5-10/node25.html"><IMG BORDER=0 SRC="../icons/zoom10.gif" ALIGN=BOTTOM ALT="[small]"></A><BR><B> Next: </B> <A NAME=tex2html613 HREF="node26.html">4.4 CCMUA</A><B>Up: </B> <A NAME=tex2html611 HREF="node22.html">4 Utilities</A><B> Prev: </B> <A NAME=tex2html605 HREF="node24.html">4.2 AMAT2</A><B><A HREF="node2.html" >Contents</A></B><BR> <HR><P><ADDRESS></ADDRESS></BODY></HTML>⌨️ 快捷键说明
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