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update reference math round doc en #2040

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Feb 6, 2025
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update reference math round doc en #2040

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76 changes: 69 additions & 7 deletions reference/math/functions/round.xml
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Original file line number Diff line number Diff line change
@@ -1,6 +1,6 @@
<?xml version="1.0" encoding="utf-8"?>
<!-- $Revision$ -->
<!-- EN-Revision: f721489eaeb79ff096971fe5a5b101c2ebab8eeb Maintainer: girgias Status: ready -->
<!-- EN-Revision: 15b93836d93f01ea6d90a68cacf04ce0d9fb8eff Maintainer: girgias Status: ready -->
<!-- Reviewed: no -->
<refentry xml:id="function.round" xmlns="http://docbook.org/ns/docbook">
<refnamediv>
Expand All @@ -13,7 +13,7 @@
<type>float</type><methodname>round</methodname>
<methodparam><type class="union"><type>int</type><type>float</type></type><parameter>num</parameter></methodparam>
<methodparam choice="opt"><type>int</type><parameter>precision</parameter><initializer>0</initializer></methodparam>
<methodparam choice="opt"><type>int</type><parameter>mode</parameter><initializer><constant>PHP_ROUND_HALF_UP</constant></initializer></methodparam>
<methodparam choice="opt"><type class="union"><type>int</type><type>RoundingMode</type></type><parameter>mode</parameter><initializer>RoundingMode::HalfAwayFromZero</initializer></methodparam>
</methodsynopsis>
<para>
Retourne la valeur arrondie de <parameter>num</parameter>
Expand Down Expand Up @@ -78,7 +78,7 @@
<term><parameter>mode</parameter></term>
<listitem>
<para>
Utilisez une des constantes suivantes pour spécifier le mode d'arrondi.
Utilisez <enumname>RoundingMode</enumname> ou l'une des constantes suivantes pour spécifier la méthode d'arrondi.
<informaltable>
<tgroup cols="2">
<thead>
Expand Down Expand Up @@ -119,6 +119,7 @@
</tbody>
</tgroup>
</informaltable>
Toutefois, noter que certaines méthodes nouvellement ajoutés n'existent que dans <link linkend="enum.roundingmode">RoundingMode</link>.
</para>
</listitem>
</varlistentry>
Expand Down Expand Up @@ -152,6 +153,12 @@
</row>
</thead>
<tbody>
<row>
<entry>8.4.0</entry>
<entry>
Quatre nouvelles méthodes d'arrondi ont été ajoutés.
</entry>
</row>
<row>
<entry>8.4.0</entry>
<entry>
Expand Down Expand Up @@ -247,14 +254,14 @@ float(0)
<programlisting role="php">
<![CDATA[
<?php
echo "Mode d'arrondi avec 9.5" . PHP_EOL;
echo "Méthode d'arrondi avec 9.5" . PHP_EOL;
var_dump(round(9.5, 0, PHP_ROUND_HALF_UP));
var_dump(round(9.5, 0, PHP_ROUND_HALF_DOWN));
var_dump(round(9.5, 0, PHP_ROUND_HALF_EVEN));
var_dump(round(9.5, 0, PHP_ROUND_HALF_ODD));
echo PHP_EOL;
echo "Mode d'arrondi avec 8.5" . PHP_EOL;
echo "Méthode d'arrondi avec 8.5" . PHP_EOL;
var_dump(round(8.5, 0, PHP_ROUND_HALF_UP));
var_dump(round(8.5, 0, PHP_ROUND_HALF_DOWN));
var_dump(round(8.5, 0, PHP_ROUND_HALF_EVEN));
Expand All @@ -265,13 +272,13 @@ var_dump(round(8.5, 0, PHP_ROUND_HALF_ODD));
&example.outputs;
<screen role="php">
<![CDATA[
Mode d'arrondi avec 9.5
Méthode d'arrondi avec 9.5
float(10)
float(9)
float(10)
float(9)
Mode d'arrondi avec 8.5
Méthode d'arrondi avec 8.5
float(9)
float(8)
float(8)
Expand Down Expand Up @@ -328,6 +335,61 @@ float(-1.5)
]]>
</screen>
</example>
<example>
<title>Exemple d'utilisation de <enumname>RoundingMode</enumname></title>
<programlisting role="php">
<![CDATA[
<?php
foreach (RoundingMode::cases() as $mode) {
foreach ([
8.5,
9.5,
-3.5,
] as $number) {
printf("%-17s: %+.17g -> %+.17g\n", $mode->name, $number, round($number, 0, $mode));
}
echo "\n";
}
?>
]]>
</programlisting>
&example.outputs;
<screen role="php">
<![CDATA[
HalfAwayFromZero : +8.5 -> +9
HalfAwayFromZero : +9.5 -> +10
HalfAwayFromZero : -3.5 -> -4
HalfTowardsZero : +8.5 -> +8
HalfTowardsZero : +9.5 -> +9
HalfTowardsZero : -3.5 -> -3
HalfEven : +8.5 -> +8
HalfEven : +9.5 -> +10
HalfEven : -3.5 -> -4
HalfOdd : +8.5 -> +9
HalfOdd : +9.5 -> +9
HalfOdd : -3.5 -> -3
TowardsZero : +8.5 -> +8
TowardsZero : +9.5 -> +9
TowardsZero : -3.5 -> -3
AwayFromZero : +8.5 -> +9
AwayFromZero : +9.5 -> +10
AwayFromZero : -3.5 -> -4
NegativeInfinity : +8.5 -> +8
NegativeInfinity : +9.5 -> +9
NegativeInfinity : -3.5 -> -4
PositiveInfinity : +8.5 -> +9
PositiveInfinity : +9.5 -> +10
PositiveInfinity : -3.5 -> -3
]]>
</screen>
</example>
</para>
</refsect1>

Expand Down