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<?xml version="1.0" encoding="ISO-8859-1" standalone="no"?>
<!--
 * Scilab ( http://www.scilab.org/ ) - This file is part of Scilab
 * Copyright (C) INRIA
 * 
 * This file must be used under the terms of the CeCILL.
 * This source file is licensed as described in the file COPYING, which
 * you should have received as part of this distribution.  The terms
 * are also available at    
 * http://www.cecill.info/licences/Licence_CeCILL_V2-en.txt
 *
 -->
<!DOCTYPE MAN SYSTEM "../../../../modules/helptools/help.dtd">
<MAN>
  <LANGUAGE>eng</LANGUAGE>
  <TITLE>subf</TITLE>
  <TYPE>Scilab Function</TYPE>
  <DATE>$LastChangedDate$</DATE>
  <SHORT_DESCRIPTION name="subf">  symbolic subtraction</SHORT_DESCRIPTION>
  <CALLING_SEQUENCE>
    <CALLING_SEQUENCE_ITEM>[&quot;c&quot;]=subf(&quot;a&quot;,&quot;b&quot;)  </CALLING_SEQUENCE_ITEM>
  </CALLING_SEQUENCE>
  <PARAM>
    <PARAM_INDENT>
      <PARAM_ITEM>
        <PARAM_NAME>&quot;a&quot;,&quot;b&quot;,&quot;c&quot;  </PARAM_NAME>
        <PARAM_DESCRIPTION>
          <SP>: strings</SP>
        </PARAM_DESCRIPTION>
      </PARAM_ITEM>
    </PARAM_INDENT>
  </PARAM>
  <DESCRIPTION>
    <P>
    returns the character string <VERB>c</VERB>=<VERB>&quot;a-b&quot;</VERB>
    Trivial simplifications such as <VERB>subf(&quot;0&quot;,&quot;a&quot;)</VERB> or
    <VERB>subf(&quot;1&quot;,&quot;2&quot;)</VERB> are performed.</P>
  </DESCRIPTION>
  <EXAMPLE>
<![CDATA[
subf('0','a')
subf('2','1')
subf('a','0')
 ]]>
  </EXAMPLE>
  <SEE_ALSO>
    <SEE_ALSO_ITEM>
      <LINK>mulf</LINK>
    </SEE_ALSO_ITEM>
    <SEE_ALSO_ITEM>
      <LINK>ldivf</LINK>
    </SEE_ALSO_ITEM>
    <SEE_ALSO_ITEM>
      <LINK>rdivf</LINK>
    </SEE_ALSO_ITEM>
    <SEE_ALSO_ITEM>
      <LINK>eval</LINK>
    </SEE_ALSO_ITEM>
    <SEE_ALSO_ITEM>
      <LINK>evstr</LINK>
    </SEE_ALSO_ITEM>
  </SEE_ALSO>
</MAN>