note 97611 added to language.types.float
| From: | inforsci at gmail dot com | Date: | Wed, 28 Apr 2010 06:48:19 +0000 |
| Subject: | note 97611 added to language.types.float | ||
| Groups: | php.notes | ||
| Request: | Send a blank email to php-notes+get-168745@lists.php.net to get a copy of this message | ||
convert 32bit HEX values into IEEE 754 floating point
<?php
$strHex = "C45F82ED";
$bin = str_pad(base_convert($strHex, 16, 2), 32, "0", STR_PAD_LEFT);
$sign = $bin[0];
$exp = bindec(substr($bin, 1, 8)) - 127;
$man = (2 << 22) + bindec(substr($bin, 9, 23));
$dec = $man * pow(2, $exp - 23) * ($sign ? -1 : 1);
echo "Answer = " . $dec . "<BR>\n";
?>
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Server IP: 69.147.83.197
Probable Submitter: 58.9.113.76
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Manual Page -- http://www.php.net/manual/en/language.types.float.php
Edit -- https://master.php.net/note/edit/97611
Del: integrated -- https://master.php.net/note/delete/97611/integrated
Del: useless -- https://master.php.net/note/delete/97611/useless
Del: bad code -- https://master.php.net/note/delete/97611/bad+code
Del: spam -- https://master.php.net/note/delete/97611/spam
Del: non-english -- https://master.php.net/note/delete/97611/non-english
Del: in docs -- https://master.php.net/note/delete/97611/in+docs
Del: other reasons-- https://master.php.net/note/delete/97611
Reject -- https://master.php.net/note/reject/97611
Search -- https://master.php.net/manage/user-notes.php