#39900 [Opn->Bgs]: intval error

ID: 39900 Updated by: tony2001@php.net Reported By: alexsum at ua dot fm -Status: Open +Status: Bogus Bug Type: *Math Functions Operating System: Windows 2000 XP PHP Version: 5.2.0 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: ------------------------------------------------------------------------ [2006-12-20 12:42:28] alexsum at ua dot fm Description: ------------ why in "echo $n*100-intval($n)*100" output :92 but in "echo intval($n*100-intval($n)*100)" output ^91 Reproduce code: --------------- intval(142.92*100-intval($n)*100) Expected result: ---------------- 92 Actual result: -------------- 91 ------------------------------------------------------------------------ -- Edit this bug report at http://bugs.php.net/?id=39900&edit=1