#42803 [Opn->Bgs]: Bad floor and int for float numbers

ID: 42803 Updated by: johannes@php.net Reported By: lacko at spacesystems dot sk -Status: Open +Status: Bogus Bug Type: Unknown/Other Function Operating System: Windows XP PHP Version: 5.2.4 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: ------------------------------------------------------------------------ [2007-09-30 19:49:00] lacko at spacesystems dot sk Description: ------------ Hi, I have problem with float numbers, when I try $number = 40; $number = (float)$number; // (number is float) echo floor($number); // Output is 39 Why? ------------------------------------------------------------------------ -- Edit this bug report at http://bugs.php.net/?id=42803&edit=1