ID: 50975 Updated by: ras...@php.net Reported By: dmgx dot michael at gmail dot com -Status: Open +Status: Bogus Bug Type: *Math Functions Operating System: Windows & Linux PHP Version: 5.3.1 New Comment:
Floating point values have a limited precision. Hence a value might not have the same string representation after any processing. That also includes writing a floating point value in your script and directly printing it without any mathematical operations. If you would like to know more about "floats" and what IEEE 754 is, read this: http://docs.sun.com/source/806-3568/ncg_goldberg.html Thank you for your interest in PHP. . Previous Comments: ------------------------------------------------------------------------ [2010-02-09 16:43:00] dmgx dot michael at gmail dot com Description: ------------ What is 34.2 - 33.98? I don't think the answer needs 15 digits. Reproduce code: --------------- <?php echo 34.2 - 33.98 ?> Expected result: ---------------- 0.22 Actual result: -------------- 0.22000000000001 ------------------------------------------------------------------------ -- Edit this bug report at http://bugs.php.net/?id=50975&edit=1
