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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:ns5="http://www.w3.org/1999/xhtml" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:db="http://docbook.org/ns/docbook" version="5.0-subset Scilab" xml:id="sign" xml:lang="fr">
<refnamediv>
<refname>sign</refname>
<refpurpose>fonction signe</refpurpose>
</refnamediv>
<refsection>
<title>Description</title>
<para>
<literal>X=sign(A)</literal> renvoie la matrice contenant les signes
de termes <literal>A(i,j)</literal>. Pour les matrices complexes,
<literal>sign(A) = A./abs(A)</literal>.
</para>
</refsection>
<refsection>
<title>Exemples</title>
<programlisting role="example"><![CDATA[
sign(rand(2,3))
sign(1+%i)
]]></programlisting>
</refsection>
<refsection role="see also">
<title>Voir aussi</title>
<simplelist type="inline">
<member>
<link linkend="abs">abs</link>
</member>
</simplelist>
</refsection>
</refentry>
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