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constants seperated from reference and adde here

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git-svn-id: https://svn.php.net/repository/phpdoc/en/trunk@89567 c90b9560-bf6c-de11-be94-00142212c4b1
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Friedhelm Betz 2002-07-23 09:37:59 +00:00
parent 6e58856ea0
commit c06ec6851a
2 changed files with 157 additions and 112 deletions
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131
reference/math/constants.xml Normal file
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<?xml version="1.0" encoding="iso-8859-1"?>
<!-- $Revision: 1.1 $ -->
<section id="math.constants">
&reftitle.constants;
&extension.constants.core;
<para>
<table>
<title>Math constants</title>
<tgroup cols="3">
<thead>
<row>
<entry>Constant</entry>
<entry>Value</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>
Only M_PI is available in PHP versions up to and including PHP 4.0.0.
All other constants are available starting with PHP 4.0.0. Constants
labeled [4.0.2] were added in PHP 4.0.2.
</para>
</section>
<!-- Keep this comment at the end of the file
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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:"../../../manual.ced"
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-->

138
reference/math/reference.xml
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<?xml version="1.0" encoding="iso-8859-1"?>
<!-- $Revision: 1.3 $ -->
<!-- $Revision: 1.4 $ -->
<reference id="ref.math">
<title>Mathematical Functions</title>
<titleabbrev>Math</titleabbrev>
@ -9,121 +9,35 @@
&reftitle.intro;
<para>
These math functions will only handle values within the range of
the <type>integer</type> and <type>float</type> types on your computer.
(this corresponds currently to the C types long resp. double)
the <type>integer</type> and <type>float</type> types on your computer
(this corresponds currently to the C types long resp. double).
If you need to handle bigger numbers, take a look at the <link
linkend="ref.bc">arbitrary precision math functions</link>.
</para>
<section id="math.constants">
&reftitle.constants;
<para>
The following values are defined as constants in PHP by the math
extension:
<table>
<title>Math constants</title>
<tgroup cols="3">
<thead>
<row>
<entry>Constant</entry>
<entry>Value</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>
Only M_PI is available in PHP versions up to and including PHP 4.0.0.
All other constants are available starting with PHP 4.0.0. Constants
labeled [4.0.2] were added in PHP 4.0.2.
</para>
</section>
</section>
<section id="math.requirenments">
&reftitle.required;
&no.requirement;
</section>
<section id="math.installation">
&reftitle.install;
&no.install;
</section>
<section id="math.configuration">
&reftitle.runtime;
&no.config;
</section>
<section id="math.resources">
&reftitle.resources;
&no.resource;
</section>
&reference.math.constants;
</partintro>
&reference.math.functions;