File: gcd.xml

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<?xml version="1.0" encoding="UTF-8"?>
<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="fr" xml:id="gcd">
  <info>
    <pubdate>$LastChangedDate$</pubdate>
  </info>
  <refnamediv>
    <refname>gcd</refname>
    <refpurpose> calcul de PGCD  </refpurpose>
  </refnamediv>
  <refsynopsisdiv>
    <title>Séquence d'appel</title>
    <synopsis>[pgcd,U]=gcd(p)</synopsis>
  </refsynopsisdiv>
  <refsection>
    <title>Paramètres</title>
    <variablelist>
      <varlistentry>
        <term>p  </term>
        <listitem>
          <para>vecteur ligne de polynômes <literal>p=[p1,..,pn] ou d'entiers (type égal à 8)</literal>
</para>
        </listitem>
      </varlistentry>
    </variablelist>
  </refsection>
  <refsection>
    <title>Description</title>
    <para>
    Calcule le PGCD des termes de <literal>p</literal> et une matrice unimodulaire (avec le polynôme inverse) <literal>U</literal>, de degré minimal tels que
  </para>
    <para>
      <literal>p*U=[0 ... 0 pgcd]</literal>
    </para>
  </refsection>
  <refsection>
    <title>Exemples</title>
    <programlisting role="example"><![CDATA[ 
//cas des polynômes
s=poly(0,'s');
p=[s,s*(s+1)^2,2*s^2+s^3];
[pgcd,u]=gcd(p);
p*u

//cas des entiers
V=int32([2^2*3^5, 2^3*3^2,2^2*3^4*5]);
[thegcd,U]=gcd(V)
V*U
 ]]></programlisting>
  </refsection>
  <refsection>
    <title>Voir Aussi</title>
    <simplelist type="inline">
      <member>
        <link linkend="bezout">bezout</link>
      </member>
      <member>
        <link linkend="lcm">lcm</link>
      </member>
      <member>
        <link linkend="hermit">hermit</link>
      </member>
    </simplelist>
  </refsection>
</refentry>