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doc-fr/reference/math/constants.xml
Yannick Torres 97e0cc9247 more PHP => &php;
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2004-06-16 21:08:35 +00:00

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<?xml version="1.0" encoding="iso-8859-1"?>
<!-- $Revision: 1.6 $ -->
<!-- EN-Revision: 1.2 Maintainer: yannick Status: ready -->
<!-- Reviewed: yes -->
<section id="math.constants">
&reftitle.constants;
&extension.constants.core;
<para>
<table>
<title>constantes mathématiques</title>
<tgroup cols="3">
<thead>
<row>
<entry>Constante</entry>
<entry>Valeur</entry>
<entry>Description</entry>
</row>
</thead>
<tbody>
<row>
<entry>M_PI</entry>
<entry>3.14159265358979323846</entry>
<entry>Pi</entry>
</row>
<row>
<entry>M_E</entry>
<entry>2.7182818284590452354</entry>
<entry>e</entry>
</row>
<row>
<entry>M_LOG2E</entry>
<entry>1.4426950408889634074</entry>
<entry>log_2 e</entry>
</row>
<row>
<entry>M_LOG10E</entry>
<entry>0.43429448190325182765</entry>
<entry>log_10 e</entry>
</row>
<row>
<entry>M_LN2</entry>
<entry>0.69314718055994530942</entry>
<entry>log_e 2</entry>
</row>
<row>
<entry>M_LN10</entry>
<entry>2.30258509299404568402</entry>
<entry>log_e 10</entry>
</row>
<row>
<entry>M_PI_2</entry>
<entry>1.57079632679489661923</entry>
<entry>pi/2</entry>
</row>
<row>
<entry>M_PI_4</entry>
<entry>0.78539816339744830962</entry>
<entry>pi/4</entry>
</row>
<row>
<entry>M_1_PI</entry>
<entry>0.31830988618379067154</entry>
<entry>1/pi</entry>
</row>
<row>
<entry>M_2_PI</entry>
<entry>0.63661977236758134308</entry>
<entry>2/pi</entry>
</row>
<row>
<entry>M_SQRTPI</entry>
<entry>1.77245385090551602729</entry>
<entry>sqrt(pi) [4.0.2]</entry>
</row>
<row>
<entry>M_2_SQRTPI</entry>
<entry>1.12837916709551257390</entry>
<entry>2/sqrt(pi)</entry>
</row>
<row>
<entry>M_SQRT2</entry>
<entry>1.41421356237309504880</entry>
<entry>sqrt(2)</entry>
</row>
<row>
<entry>M_SQRT3</entry>
<entry>1.73205080756887729352</entry>
<entry>sqrt(3) [4.0.2]</entry>
</row>
<row>
<entry>M_SQRT1_2</entry>
<entry>0.70710678118654752440</entry>
<entry>1/sqrt(2)</entry>
</row>
<row>
<entry>M_LNPI</entry>
<entry>1.14472988584940017414</entry>
<entry>log_e(pi) [4.0.2]</entry>
</row>
<row>
<entry>M_EULER</entry>
<entry>0.57721566490153286061</entry>
<entry>Euler constant [4.0.2]</entry>
</row>
</tbody>
</tgroup>
</table>
Seule M_PI est disponible dans les verisons de &php; jusqu'à 4.0.0.
Toutes les autres constantes on été ajoutées à partir de &php; 4.0.0,
et les autres ont été indiquées avec [4.0.2].
</para>
</section>
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