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238 lines
6.4 KiB
XML
238 lines
6.4 KiB
XML
<?xml version="1.0" encoding="utf-8"?>
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<!-- $Revision$ -->
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<!-- EN-Revision: 0c9c2dd669fe9395eaa73d487fbd160f9057429a Maintainer: yannick Status: ready -->
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<!-- Reviewed: no -->
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<refentry xml:id="function.decbin" xmlns="http://docbook.org/ns/docbook">
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<refnamediv>
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<refname>decbin</refname>
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<refpurpose>Convertit de décimal en binaire</refpurpose>
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</refnamediv>
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<refsect1 role="description">
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&reftitle.description;
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<methodsynopsis>
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<type>string</type><methodname>decbin</methodname>
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<methodparam><type>int</type><parameter>num</parameter></methodparam>
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</methodsynopsis>
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<para>
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Retourne une chaîne contenant la représentation binaire de
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l'entier <parameter>num</parameter> donné en argument.
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</para>
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</refsect1>
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<refsect1 role="parameters">
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&reftitle.parameters;
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<para>
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<variablelist>
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<varlistentry>
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<term><parameter>num</parameter></term>
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<listitem>
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<para>
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Valeur décimale à convertir
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</para>
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<table>
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<title>Intervalle d'entrée sur des machines 32-bit</title>
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<tgroup cols="3">
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<colspec colname="c1"/>
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<colspec colname="c2"/>
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<colspec colname="c3"/>
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<thead>
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<row>
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<entry>Paramètre <parameter>num</parameter> positif</entry>
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<entry>Paramètre <parameter>num</parameter> négatif</entry>
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<entry>Valeur retournée</entry>
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</row>
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</thead>
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<tbody>
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<row>
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<entry>0</entry>
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<entry/>
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<entry>0</entry>
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</row>
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<row>
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<entry>1</entry>
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<entry/>
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<entry>1</entry>
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</row>
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<row>
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<entry>2</entry>
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<entry/>
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<entry>10</entry>
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</row>
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<row>
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<entry namest="c1" nameend="c3">... progression normale ...</entry>
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</row>
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<row>
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<entry>2147483646</entry>
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<entry/>
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<entry>1111111111111111111111111111110</entry>
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</row>
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<row>
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<entry>2147483647 (plus grand entier signé)</entry>
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<entry/>
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<entry>1111111111111111111111111111111 (31 uns)</entry>
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</row>
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<row>
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<entry>2147483648</entry>
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<entry>-2147483648</entry>
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<entry>10000000000000000000000000000000</entry>
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</row>
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<row>
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<entry namest="c1" nameend="c3">... progression normale ...</entry>
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</row>
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<row>
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<entry>4294967294</entry>
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<entry>-2</entry>
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<entry>11111111111111111111111111111110</entry>
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</row>
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<row>
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<entry>4294967295 (plus grand entier non-signé)</entry>
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<entry>-1</entry>
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<entry>11111111111111111111111111111111 (32 uns)</entry>
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</row>
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</tbody>
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</tgroup>
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</table>
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<table>
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<title>Intervalle d'entrée sur des machines 64-bit</title>
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<tgroup cols="3">
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<colspec colname="c1"/>
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<colspec colname="c2"/>
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<colspec colname="c3"/>
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<thead>
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<row>
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<entry>Paramètre <parameter>num</parameter> positif</entry>
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<entry>Paramètre <parameter>num</parameter> négatif</entry>
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<entry>Valeur retournée</entry>
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</row>
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</thead>
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<tbody>
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<row>
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<entry>0</entry>
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<entry/>
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<entry>0</entry>
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</row>
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<row>
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<entry>1</entry>
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<entry/>
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<entry>1</entry>
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</row>
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<row>
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<entry>2</entry>
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<entry/>
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<entry>10</entry>
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</row>
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<row>
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<entry namest="c1" nameend="c3">... progression normale ...</entry>
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</row>
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<row>
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<entry>9223372036854775806</entry>
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<entry/>
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<entry>111111111111111111111111111111111111111111111111111111111111110</entry>
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</row>
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<row>
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<entry>9223372036854775807 (plus grand entier signé)</entry>
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<entry/>
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<entry>111111111111111111111111111111111111111111111111111111111111111 (63 uns)</entry>
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</row>
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<row>
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<entry/>
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<entry>-9223372036854775808</entry>
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<entry>1000000000000000000000000000000000000000000000000000000000000000</entry>
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</row>
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<row>
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<entry namest="c1" nameend="c3">... progression normale ...</entry>
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</row>
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<row>
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<entry/>
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<entry>-2</entry>
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<entry>1111111111111111111111111111111111111111111111111111111111111110</entry>
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</row>
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<row>
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<entry/>
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<entry>-1</entry>
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<entry>1111111111111111111111111111111111111111111111111111111111111111 (64 uns)</entry>
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</row>
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</tbody>
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</tgroup>
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</table>
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</listitem>
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</varlistentry>
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</variablelist>
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</para>
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</refsect1>
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<refsect1 role="returnvalues">
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&reftitle.returnvalues;
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<para>
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Une représentation binaire de <parameter>num</parameter>.
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</para>
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</refsect1>
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<refsect1 role="examples">
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&reftitle.examples;
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<para>
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<example>
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<title>Exemple avec <function>decbin</function></title>
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<programlisting role="php">
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<![CDATA[
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<?php
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echo decbin(12) . "\n";
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echo decbin(26);
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?>
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]]>
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</programlisting>
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&example.outputs;
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<screen>
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<![CDATA[
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1100
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11010
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]]>
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</screen>
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</example>
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</para>
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</refsect1>
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<refsect1 role="seealso">
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&reftitle.seealso;
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<para>
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<simplelist>
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<member><function>bindec</function></member>
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<member><function>decoct</function></member>
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<member><function>dechex</function></member>
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<member><function>base_convert</function></member>
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<member>
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<function>printf</function>, en utilisant <literal>%b</literal>,
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<literal>%032b</literal> ou <literal>%064b</literal> comme format
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</member>
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<member>
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<function>sprintf</function>, en utilisant <literal>%b</literal>,
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<literal>%032b</literal> ou <literal>%064b</literal> comme format
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</member>
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</simplelist>
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</para>
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</refsect1>
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</refentry>
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<!-- Keep this comment at the end of the file
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Local variables:
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mode: sgml
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sgml-omittag:t
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sgml-shorttag:t
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sgml-minimize-attributes:nil
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sgml-always-quote-attributes:t
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sgml-indent-step:1
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sgml-indent-data:t
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indent-tabs-mode:nil
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sgml-parent-document:nil
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sgml-default-dtd-file:"~/.phpdoc/manual.ced"
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sgml-exposed-tags:nil
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sgml-local-catalogs:nil
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sgml-local-ecat-files:nil
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End:
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vim600: syn=xml fen fdm=syntax fdl=2 si
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vim: et tw=78 syn=sgml
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vi: ts=1 sw=1
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-->
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