mirror of
https://github.com/sigmasternchen/php-doc-en
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7d8389d5bd
git-svn-id: https://svn.php.net/repository/phpdoc/en/trunk@169153 c90b9560-bf6c-de11-be94-00142212c4b1
53 lines
1.6 KiB
XML
53 lines
1.6 KiB
XML
<?xml version="1.0" encoding="iso-8859-1"?>
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<!-- $Revision: 1.5 $ -->
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<!-- splitted from ./en/functions/math.xml, last change in rev 1.63 -->
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<refentry id='function.expm1'>
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<refnamediv>
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<refname>expm1</refname>
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<refpurpose>
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Returns exp(number) - 1, computed in a way that is accurate even
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when the value of number is close to zero
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</refpurpose>
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</refnamediv>
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<refsect1>
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<title>Description</title>
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<methodsynopsis>
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<type>float</type><methodname>expm1</methodname>
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<methodparam><type>float</type><parameter>number</parameter></methodparam>
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</methodsynopsis>
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&warn.experimental.func;
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<para>
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<function>expm1</function> returns the equivalent to
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'exp(<parameter>number</parameter>) - 1' computed in a way that is
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accurate even if the value of <parameter>number</parameter> is near zero,
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a case where 'exp (<parameter>number</parameter>) - 1' would be
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inaccurate due to subtraction of two numbers that are nearly equal.
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</para>
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¬e.no-windows;
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<para>
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See also <function>log1p</function> and
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<function>exp</function>.
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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:"../../../../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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