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intdiv.xml
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148 lines (146 loc) · 3.83 KB
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<?xml version="1.0" encoding="utf-8"?>
<!-- $Revision$ -->
<!-- EN-Revision: 761d72245071f89a626903c9bcdc6aaff1252d54 Maintainer: iwamot Status: ready -->
<!-- Reviewed: no -->
<refentry xml:id="function.intdiv" xmlns="http://docbook.org/ns/docbook" xmlns:xlink="http://www.w3.org/1999/xlink">
<refnamediv>
<refname>intdiv</refname>
<refpurpose>整数値の除算</refpurpose>
</refnamediv>
<refsect1 role="description">
&reftitle.description;
<methodsynopsis>
<type>int</type><methodname>intdiv</methodname>
<methodparam><type>int</type><parameter>num1</parameter></methodparam>
<methodparam><type>int</type><parameter>num2</parameter></methodparam>
</methodsynopsis>
<para>
<parameter>num1</parameter> を <parameter>num2</parameter> で割った整数商を返します。
</para>
</refsect1>
<refsect1 role="parameters">
&reftitle.parameters;
<variablelist>
<varlistentry>
<term><parameter>num1</parameter></term>
<listitem>
<para>
割られる数。
</para>
</listitem>
</varlistentry>
<varlistentry>
<term><parameter>num2</parameter></term>
<listitem>
<para>
<parameter>num1</parameter> を割る数。
</para>
</listitem>
</varlistentry>
</variablelist>
</refsect1>
<refsect1 role="returnvalues">
&reftitle.returnvalues;
<para>
<parameter>num1</parameter> を <parameter>num2</parameter> で割った整数商。
</para>
</refsect1>
<refsect1 role="errors">
&reftitle.errors;
<para>
<parameter>num2</parameter> が <literal>0</literal> の場合、<classname>DivisionByZeroError</classname>
例外がスローされます。<parameter>num1</parameter> が <constant>PHP_INT_MIN</constant>
で <parameter>num2</parameter> が <literal>-1</literal> の場合、
<classname>ArithmeticError</classname> 例外がスローされます。
</para>
</refsect1>
<refsect1 role="examples">
&reftitle.examples;
<para>
<example>
<title><function>intdiv</function> の例</title>
<programlisting role="php">
<![CDATA[
<?php
var_dump(intdiv(3, 2));
var_dump(intdiv(-3, 2));
var_dump(intdiv(3, -2));
var_dump(intdiv(-3, -2));
var_dump(intdiv(PHP_INT_MAX, PHP_INT_MAX));
var_dump(intdiv(PHP_INT_MIN, PHP_INT_MIN));
?>
]]>
</programlisting>
&example.outputs;
<screen>
<![CDATA[
int(1)
int(-1)
int(-1)
int(1)
int(1)
int(1)
]]>
</screen>
</example>
</para>
<para>
<example>
<title><function>intdiv</function> に不正な除数を使った例</title>
<programlisting role="php">
<![CDATA[
<?php
try {
intdiv(PHP_INT_MIN, -1);
} catch (Error $e) {
echo get_class($e), ': ', $e->getMessage(), PHP_EOL;
}
try
intdiv(1, 0);
} catch (Error $e) {
echo get_class($e), ': ', $e->getMessage(), PHP_EOL;
}
?>
]]>
</programlisting>
&example.outputs;
<screen>
<![CDATA[
ArithmeticError: Division of PHP_INT_MIN by -1 is not an integer
DivisionByZeroError: Division by zero
]]>
</screen>
</example>
</para>
</refsect1>
<refsect1 role="seealso">
&reftitle.seealso;
<para>
<simplelist>
<member><link linkend="language.operators.arithmetic"><literal>/</literal></link> - 浮動小数点数値の除算</member>
<member><link linkend="language.operators.arithmetic"><literal>%</literal></link> - 整数値の剰余</member>
<member><function>fmod</function> - 浮動小数点数値の剰余</member>
</simplelist>
</para>
</refsect1>
</refentry>
<!-- Keep this comment at the end of the file
Local variables:
mode: sgml
sgml-omittag:t
sgml-shorttag:t
sgml-minimize-attributes:nil
sgml-always-quote-attributes:t
sgml-indent-step:1
sgml-indent-data:t
indent-tabs-mode:nil
sgml-parent-document:nil
sgml-default-dtd-file:"~/.phpdoc/manual.ced"
sgml-exposed-tags:nil
sgml-local-catalogs:nil
sgml-local-ecat-files:nil
End:
vim600: syn=xml fen fdm=syntax fdl=2 si
vim: et tw=78 syn=sgml
vi: ts=1 sw=1
-->