PHP 4.0 Bug #5139: Subtraction among float-point numbers
| From: | duxy at leyou dot com | Date: | Tue, 20 Jun 2000 07:15:17 +0000 |
| Subject: | PHP 4.0 Bug #5139: Subtraction among float-point numbers | ||
| Groups: | php.dev | ||
| Request: | Send a blank email to php-dev+get-21793@lists.php.net to get a copy of this message | ||
From: duxy@leyou.com
Operating system: FreeBSD3.4
PHP version: 4.0 Beta 3
PHP Bug Type: Scripting Engine problem
Bug description: Subtraction among float-point numbers
The PHP version that I'm using is 4.0 Beta 2. And I find a bug as following:
<?php
echo (692.00-672.68-14.70); #4.6200000000001
echo (692.00-(672.68+14.70));#4.62
?>
The result of the first "echo" is wrong.
BTW, Could you tell me where I can learn more about the implementation of float-point numbers in
PHP?