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  • Committer: Bazaar Package Importer
  • Author(s): Torsten Werner
  • Date: 2005-01-09 22:58:21 UTC
  • mfrom: (1.1.1 upstream)
  • Revision ID: james.westby@ubuntu.com-20050109225821-473xr8vhgugxxx5j
Tags: 3.0-12
http://bugs.debian.org/255869
changed configure.in to build scilab's own malloc.o, closes: #255869

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man/eng/scicos/SUMMATION.htm
 
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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2 Final//EN">
 
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<!--Converted with LaTeX2HTML 2002-2-1 (1.70)
 
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original version by:  Nikos Drakos, CBLU, University of Leeds
 
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* revised and updated by:  Marcus Hennecke, Ross Moore, Herb Swan
 
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* with significant contributions from:
 
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  Jens Lippmann, Marek Rouchal, Martin Wilck and others -->
 
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<HTML>
 
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<HEAD>
 
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<TITLE>Sum </TITLE>
 
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<META NAME="description" CONTENT="Sum ">
 
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<META NAME="keywords" CONTENT="main">
 
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<META NAME="resource-type" CONTENT="document">
 
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<META NAME="distribution" CONTENT="global">
 
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<META NAME="Generator" CONTENT="LaTeX2HTML v2002-2-1">
 
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<META HTTP-EQUIV="Content-Style-Type" CONTENT="text/css">
 
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<LINK REL="STYLESHEET" HREF="main.css">
 
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</HEAD>
 
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<BODY bgcolor="#FFFFFF">
 
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<!--Table of Child-Links-->
 
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<A NAME="CHILD_LINKS"><STRONG>Subsections</STRONG></A>
 
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<UL>
 
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<LI><A NAME="tex2html5177"
 
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  HREF="SUMMATION.htm#SECTION005813100000000000000">Library</A>
 
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<LI><A NAME="tex2html5178"
 
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  HREF="SUMMATION.htm#SECTION005813200000000000000">Description</A>
 
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<LI><A NAME="tex2html5179"
 
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  HREF="SUMMATION.htm#SECTION005813300000000000000">Dialog Box</A>
 
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<LI><A NAME="tex2html5180"
 
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  HREF="SUMMATION.htm#SECTION005813400000000000000">Default properties</A>
 
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<LI><A NAME="tex2html5181"
 
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  HREF="SUMMATION.htm#SECTION005813500000000000000">Interfacing function</A>
 
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<LI><A NAME="tex2html5182"
 
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  HREF="SUMMATION.htm#SECTION005813600000000000000">Computational function (type 4)</A>
 
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</UL>
 
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<!--End of Table of Child-Links-->
 
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<HR>
 
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<H2><A NAME="SECTION005813000000000000000"></A><A NAME="SUMMATION"></A>
 
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<BR>
 
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Sum 
 
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</H2>
 
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<DIV ALIGN="CENTER">
 
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<!-- MATH
 
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 $\epsfig{file=SUMMATION.eps,width=90.00pt}$
 
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 -->
 
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<IMG
 
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 WIDTH="144" HEIGHT="242" ALIGN="BOTTOM" BORDER="0"
 
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 SRC="img161.gif"
 
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 ALT="\epsfig{file=SUMMATION.eps,width=90.00pt}">
 
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</DIV>
 
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<H3><font color="blue"><A NAME="SECTION005813100000000000000">
 
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Library</A>
 
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</font></H3>
 
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Linear
 
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<H3><font color="blue"><A NAME="SECTION005813200000000000000">
 
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Description</A>
 
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</font></H3>
 
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<P>
 
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<H3><font color="blue"><A NAME="SECTION005813300000000000000">
 
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Dialog Box</A>
 
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</font></H3>
 
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<DIV ALIGN="CENTER">
 
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<TABLE CELLPADDING=3 BORDER="1">
 
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<TR><TD ALIGN="CENTER">Set sum block parameters</TD>
 
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<TD></TD>
 
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</TR>
 
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<TR><TD ALIGN="CENTER">Number of inputs or sign vector (of +1, -1)</TD>
 
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<TD ALIGN="CENTER">[1;-1]</TD>
 
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</TR>
 
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</TABLE>
 
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</DIV>
 
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<UL>
 
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<LI>Number of inputs or sign vector :Select this parameter to
 
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  require that all inputs must have the same data type.  
 
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</LI>
 
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</UL>
 
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<H3><font color="blue"><A NAME="SECTION005813400000000000000">
 
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Default properties</A>
 
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</font></H3>
 
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<UL>
 
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<LI>always active: no
 
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</LI>
 
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<LI>direct-feedthrough: yes
 
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</LI>
 
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<LI>zero-crossing: no
 
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</LI>
 
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<LI>mode: no
 
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</LI>
 
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<LI>number/sizes of inputs: 2 / -1  -1
 
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</LI>
 
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<LI>number/sizes of outputs: 1 / -1
 
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</LI>
 
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<LI>number/sizes of activation inputs: 0 / 
 
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</LI>
 
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<LI>number/sizes of activation outputs: 0 / 
 
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</LI>
 
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<LI>continuous-time state: no
 
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</LI>
 
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<LI>discrete-time state: no
 
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</LI>
 
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<LI>name of computational function: <EM>summation</EM>
 
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</LI>
 
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</UL>
 
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<H3><font color="blue"><A NAME="SECTION005813500000000000000">
 
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Interfacing function</A>
 
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</font></H3>
 
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<TT>scilab/macros/scicos_blocks/linear/SUMMATION.sci</TT>
 
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<H3><font color="blue"><A NAME="SECTION005813600000000000000">
 
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Computational function (type 4)</A>
 
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</font></H3>
 
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<BR>
 
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<PRE>#include "scicos_block.h"
 
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#include &lt;math.h&gt;
 
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void summation(scicos_block *block,int flag)
 
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{
 
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  int j,k;
 
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  if(flag==1){
 
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    if (block-&gt;nin==1){
 
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      block-&gt;outptr[0][0]=0.0;
 
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      for (j=0;j&lt;block-&gt;insz[0];j++) {
 
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        block-&gt;outptr[0][0]=block-&gt;outptr[0][0]+block-&gt;inptr[0][j];
 
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      }
 
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    }
 
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    else {
 
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      for (j=0;j&lt;block-&gt;insz[0];j++) {
 
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        block-&gt;outptr[0][j]=0.0;
 
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        for (k=0;k&lt;block-&gt;nin;k++) {
 
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          if(block-&gt;ipar[k]&gt;0){
 
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            block-&gt;outptr[0][j]=block-&gt;outptr[0][j]+block-&gt;inptr[k][j];
 
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          }else{
 
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            block-&gt;outptr[0][j]=block-&gt;outptr[0][j]-block-&gt;inptr[k][j];
 
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          }
 
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        }
 
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      }
 
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    }
 
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  }
 
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}
 
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</PRE>
 
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<BR><HR>
 
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<ADDRESS>
 
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Ramine Nikoukhah
 
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2004-06-22
 
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</ADDRESS>
 
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</BODY>
 
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</HTML>