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git-svn-id: https://svn.php.net/repository/phpdoc/en/trunk@89567 c90b9560-bf6c-de11-be94-00142212c4b1
131 lines
3.2 KiB
XML
131 lines
3.2 KiB
XML
<?xml version="1.0" encoding="iso-8859-1"?>
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<!-- $Revision: 1.1 $ -->
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<section id="math.constants">
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&reftitle.constants;
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&extension.constants.core;
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<para>
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<table>
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<title>Math constants</title>
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<tgroup cols="3">
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<thead>
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<row>
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<entry>Constant</entry>
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<entry>Value</entry>
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<entry>Description</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>M_PI</entry>
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<entry>3.14159265358979323846</entry>
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<entry>Pi</entry>
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</row>
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<row>
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<entry>M_E</entry>
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<entry>2.7182818284590452354</entry>
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<entry>e</entry>
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</row>
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<row>
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<entry>M_LOG2E</entry>
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<entry>1.4426950408889634074</entry>
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<entry>log_2 e</entry>
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</row>
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<row>
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<entry>M_LOG10E</entry>
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<entry>0.43429448190325182765</entry>
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<entry>log_10 e</entry>
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</row>
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<row>
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<entry>M_LN2</entry>
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<entry>0.69314718055994530942</entry>
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<entry>log_e 2</entry>
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</row>
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<row>
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<entry>M_LN10</entry>
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<entry>2.30258509299404568402</entry>
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<entry>log_e 10</entry>
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</row>
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<row>
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<entry>M_PI_2</entry>
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<entry>1.57079632679489661923</entry>
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<entry>pi/2</entry>
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</row>
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<row>
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<entry>M_PI_4</entry>
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<entry>0.78539816339744830962</entry>
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<entry>pi/4</entry>
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</row>
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<row>
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<entry>M_1_PI</entry>
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<entry>0.31830988618379067154</entry>
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<entry>1/pi</entry>
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</row>
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<row>
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<entry>M_2_PI</entry>
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<entry>0.63661977236758134308</entry>
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<entry>2/pi</entry>
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</row>
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<row>
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<entry>M_SQRTPI</entry>
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<entry>1.77245385090551602729</entry>
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<entry>sqrt(pi) [4.0.2]</entry>
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</row>
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<row>
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<entry>M_2_SQRTPI</entry>
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<entry>1.12837916709551257390</entry>
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<entry>2/sqrt(pi)</entry>
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</row>
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<row>
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<entry>M_SQRT2</entry>
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<entry>1.41421356237309504880</entry>
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<entry>sqrt(2)</entry>
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</row>
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<row>
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<entry>M_SQRT3</entry>
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<entry>1.73205080756887729352</entry>
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<entry>sqrt(3) [4.0.2]</entry>
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</row>
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<row>
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<entry>M_SQRT1_2</entry>
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<entry>0.70710678118654752440</entry>
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<entry>1/sqrt(2)</entry>
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</row>
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<row>
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<entry>M_LNPI</entry>
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<entry>1.14472988584940017414</entry>
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<entry>log_e(pi) [4.0.2]</entry>
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</row>
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<row>
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<entry>M_EULER</entry>
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<entry>0.57721566490153286061</entry>
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<entry>Euler constant [4.0.2]</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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Only M_PI is available in PHP versions up to and including PHP 4.0.0.
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All other constants are available starting with PHP 4.0.0. Constants
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labeled [4.0.2] were added in PHP 4.0.2.
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</para>
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</section>
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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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