sigmasternchen/php-doc-en
1
0
Fork 0
mirror of https://github.com/sigmasternchen/php-doc-en synced 2025-03-16 00:48:54 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions

pi: Document precicion directive's affect, as well as the M_PI constant.

Browse source 
And, some other minor changes.


git-svn-id: https://svn.php.net/repository/phpdoc/en/trunk@67736 c90b9560-bf6c-de11-be94-00142212c4b1
This commit is contained in:
Philip Olson 2002-01-14 09:45:55 +00:00
parent 164fb0aafe
commit d96c681407
1 changed files with 12 additions and 7 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

19
functions/math.xml
View file

@ -1,5 +1,5 @@
<?xml version="1.0" encoding="iso-8859-1"?>
<!-- $Revision: 1.67 $ -->
<!-- $Revision: 1.68 $ -->
<reference id="ref.math">
<title>Mathematical Functions</title>
<titleabbrev>Math</titleabbrev>
@ -118,9 +118,9 @@
</tbody>
</tgroup>
</table>
Only M_PI is available in PHP versions up to and including PHP4RC1.
All other constants are available starting with PHP 4.0. Constants
labelled [4.0.2] were added in PHP 4.0.2.
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>
</sect2>
</sect1>
@ -1177,14 +1177,19 @@ $randval = mt_rand();
</funcprototype>
</funcsynopsis>
<simpara>
Returns an approximation of pi.
Returns an approximation of pi. The returned <type>float</type>
has a precision based on the
<link linkend="ini.precision">precision</link> directive in
<filename>php.ini</filename>, which defaults to <literal>14</literal>.
Also, you can use the <constant>M_PI</constant> constant which yields
identical results to <function>pi</function>.
</simpara>
<para>
<informalexample>
<programlisting>
<![CDATA[
echo pi();
// will echo 3.1415926535898
echo pi(); // 3.1415926535898
echo M_PI; // 3.1415926535898
]]>
</programlisting>
</informalexample>