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115 lines
3.1 KiB
XML
115 lines
3.1 KiB
XML
<?xml version="1.0" encoding="utf-8"?>
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<!-- $Revision$ -->
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<!-- EN-Revision: 2b7eebaaf61adf4b14a18a046f1a6c2b61cc8e72 Maintainer: samesch Status: ready -->
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<!-- Reviewed: no -->
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<refentry xml:id="function.fdiv" xmlns="http://docbook.org/ns/docbook">
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<refnamediv>
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<refname>fdiv</refname>
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<refpurpose>Dividiert zwei Zahlen gemäß IEEE 754</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>float</type><methodname>fdiv</methodname>
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<methodparam><type>float</type><parameter>num1</parameter></methodparam>
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<methodparam><type>float</type><parameter>num2</parameter></methodparam>
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</methodsynopsis>
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<para>
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Gibt das Ergebnis der Gleitkomma-Division von <parameter>num1</parameter>
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durch <parameter>num2</parameter> zurück. Wenn
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<parameter>num2</parameter> gleich Null ist, dann wird entweder
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<constant>INF</constant>, -<constant>INF</constant> oder
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<constant>NAN</constant> zurückgegeben.
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</para>
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<para>
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Es ist zu beachten, dass <constant>NAN</constant> bei Vergleichen niemals
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gleich (<code>==</code>) oder identisch (<code>===</code>) mit irgendeinem
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Wert, einschließlich sich selbst, ist.
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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>num1</parameter></term>
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<listitem>
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<para>
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Der Dividend (Zähler).
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</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term><parameter>num2</parameter></term>
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<listitem>
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<para>
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Der Divisor (Nenner).
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</para>
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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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Das Ergebnis von <parameter>num1</parameter>/<parameter>num2</parameter>
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als Gleitkommazahl.
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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>Beispiel für die Verwendung von <function>fdiv</function></title>
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<programlisting role="php">
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<![CDATA[
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<?php
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var_dump(fdiv(5.7, 1.3)); // float(4.384615384615385)
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var_dump(fdiv(4, 2)); // float(2)
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var_dump(fdiv(1.0, 0.0)); // float(INF)
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var_dump(fdiv(-1.0, 0.0)); // float(-INF)
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var_dump(fdiv(0.0, 0.0)); // float(NAN)
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?>
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]]>
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</programlisting>
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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>
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Divisions-Operator
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<link linkend="language.operators.arithmetic"><literal>/</literal></link>
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</member>
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<member><function>intdiv</function> - Integer-Division</member>
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<member><function>fmod</function></member>
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<member><function>fpow</function></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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