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<?xml version="1.0" encoding="ISO-8859-1"?>
<!--
 * 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
 *
 -->
<refentry xmlns="http://docbook.org/ns/docbook" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:svg="http://www.w3.org/2000/svg" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:db="http://docbook.org/ns/docbook" version="5.0-subset Scilab" xml:lang="en" xml:id="subf"><info><pubdate>$LastChangedDate$</pubdate></info><refnamediv><refname>subf</refname><refpurpose>  symbolic subtraction</refpurpose></refnamediv>
  
  
  
  
  
  <refsynopsisdiv><title>Calling Sequence</title><synopsis>["c"]=subf("a","b")</synopsis></refsynopsisdiv>
  <refsection><title>Parameters</title>
    <variablelist>
      <varlistentry>
        <term>"a","b","c"  </term>
        <listitem>
          <para>strings</para>
        </listitem>
      </varlistentry>
    </variablelist>
  </refsection>
  <refsection><title>Description</title>
    <para>
    returns the character string <literal>c</literal>=<literal>"a-b"</literal>
    Trivial simplifications such as <literal>subf("0","a")</literal> or
    <literal>subf("1","2")</literal> are performed.</para>
  </refsection>
  <refsection><title>Examples</title><programlisting role="example"><![CDATA[

subf('0','a')
subf('2','1')
subf('a','0')
 
  ]]></programlisting></refsection>
  <refsection><title>See Also</title><simplelist type="inline">
    <member>
      <link linkend="mulf">mulf</link>
    </member>
    <member>
      <link linkend="ldivf">ldivf</link>
    </member>
    <member>
      <link linkend="rdivf">rdivf</link>
    </member>
    <member>
      <link linkend="eval">eval</link>
    </member>
    <member>
      <link linkend="evstr">evstr</link>
    </member>
  </simplelist></refsection>
</refentry>