ID: 43447 Updated by: [EMAIL PROTECTED] Reported By: jumo at gmx dot de -Status: Open +Status: Bogus Bug Type: *General Issues Operating System: Ubuntu Linux PHP Version: 5.2.5 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: ------------------------------------------------------------------------ [2007-11-29 12:08:02] jumo at gmx dot de Description: ------------ the comparison in a special for-loop is not correct. Reproduce code: --------------- <?php for($i = 400.84; $i < 400.88; $i = $i + 0.01) { echo $i; echo "<br>"; } ?> Expected result: ---------------- 400.84<br> 400.85<br> 400.86<br> 400.87<br> Actual result: -------------- 400.84<br> 400.85<br> 400.86<br> 400.87<br> 400.88<br> ------------------------------------------------------------------------ -- Edit this bug report at http://bugs.php.net/?id=43447&edit=1
