note 89880 deleted from language.types.float by joey
| From: | joey@php.net | Date: | Wed, 28 Dec 2011 12:24:19 +0000 |
| Subject: | note 89880 deleted from language.types.float by joey | ||
| References: | 1 | Groups: | php.notes |
| Request: | Send a blank email to php-notes+get-185265@lists.php.net to get a copy of this message | ||
Note Submitter: mriviera at videostrip dot com
----
Converting IEEE754 64 bit binary to PHP float:
<?php
$v = hexdec('402E1CAC083126E9');
$x = (($v & ((1 << 52) - 1)) + ( 1 << 52)) * ($v >> 63 | 1);
$exp = ($v >> 52 & 0x7FF) - 1075;
$float = $x * pow(2, $exp);
?>