ID: 30330
Updated by: [EMAIL PROTECTED]
Reported By: dbauleo at terra dot com dot br
-Status: Open
+Status: Bogus
Bug Type: Math related
Operating System: Windows 2000
PHP Version: 4.3.9
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.
Thank you for your interest in PHP.
.
Previous Comments:
------------------------------------------------------------------------
[2004-10-05 19:46:53] dbauleo at terra dot com dot br
Description:
------------
I used the fmod() function with float numbers, and it was an exact
division, so it was supposed to return 0, instead of it, the Y value
was returned.
Reproduce code:
---------------
<?php
echo fmod(396456.06, 56636.58);
?>
Expected result:
----------------
fmod(396456.06, 56636.58) = 0
Actual result:
--------------
fmod(396456.06, 56636.58) = 56636.58
function f_mod($x,$y)
{
$i = floor($x / $y);
$a = $x - $i * $y;
return $a;
}
f_mod(396456.06, 56636.58) = 0
------------------------------------------------------------------------
--
Edit this bug report at http://bugs.php.net/?id=30330&edit=1
