1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
|
<?xml version="1.0" encoding="iso-8859-1"?>
<!-- $Revision: 1.5 $ -->
<appendix xml:id="math.constants" xmlns="http://docbook.org/ns/docbook">
&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) [5.2.0]</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) [5.2.0]</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) [5.2.0]</entry>
</row>
<row>
<entry>M_EULER</entry>
<entry>0.57721566490153286061</entry>
<entry>Euler constant [5.2.0]</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 [5.2.0] were added in PHP 5.2.0.
</para>
</appendix>
<!-- Keep this comment at the end of the file
Local variables:
mode: sgml
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"
sgml-exposed-tags:nil
sgml-local-catalogs:nil
sgml-local-ecat-files:nil
End:
vim600: syn=xml fen fdm=syntax fdl=2 si
vim: et tw=78 syn=sgml
vi: ts=1 sw=1
-->
|
