From: courtois at nouvo dot com
Operating system: XP
PHP version: 5.2.9
PHP Bug Type: Strings related
Bug description: sprintf error when multiplying float and displaying digit
Description:
------------
This a followup to bug #48455 which has been closed.
I observed same bug with different values.
I'm affraid rasmus' answer is incorrect.
3498 is represented with 12 bits. A float holds 24 bits which is far
enough to contain 3498 without any single bit of precision loss.
Anyway, the same program in C works fine:
#include <stdio.h>
main()
{
float f;
f=34.98*100;
printf("%6d %f\n",(int)f,f);
}
thus the problem is NOT with the float representation.
Moreover the following script should return twice the same thing:
$x=34.98*100;
print "x:".$x." sprintf:".sprintf('%d',$x);
but the unexpected result is:
x:3498 sprintf:3497
If the first conversion from float to string works fine, why doesn't the
second conversion work ?
--
Edit bug report at http://bugs.php.net/?id=48462&edit=1
--
Try a CVS snapshot (PHP 5.2):
http://bugs.php.net/fix.php?id=48462&r=trysnapshot52
Try a CVS snapshot (PHP 5.3):
http://bugs.php.net/fix.php?id=48462&r=trysnapshot53
Try a CVS snapshot (PHP 6.0):
http://bugs.php.net/fix.php?id=48462&r=trysnapshot60
Fixed in CVS:
http://bugs.php.net/fix.php?id=48462&r=fixedcvs
Fixed in CVS and need be documented:
http://bugs.php.net/fix.php?id=48462&r=needdocs
Fixed in release:
http://bugs.php.net/fix.php?id=48462&r=alreadyfixed
Need backtrace:
http://bugs.php.net/fix.php?id=48462&r=needtrace
Need Reproduce Script:
http://bugs.php.net/fix.php?id=48462&r=needscript
Try newer version:
http://bugs.php.net/fix.php?id=48462&r=oldversion
Not developer issue:
http://bugs.php.net/fix.php?id=48462&r=support
Expected behavior:
http://bugs.php.net/fix.php?id=48462&r=notwrong
Not enough info:
http://bugs.php.net/fix.php?id=48462&r=notenoughinfo
Submitted twice:
http://bugs.php.net/fix.php?id=48462&r=submittedtwice
register_globals:
http://bugs.php.net/fix.php?id=48462&r=globals
PHP 4 support discontinued: http://bugs.php.net/fix.php?id=48462&r=php4
Daylight Savings: http://bugs.php.net/fix.php?id=48462&r=dst
IIS Stability:
http://bugs.php.net/fix.php?id=48462&r=isapi
Install GNU Sed:
http://bugs.php.net/fix.php?id=48462&r=gnused
Floating point limitations:
http://bugs.php.net/fix.php?id=48462&r=float
No Zend Extensions:
http://bugs.php.net/fix.php?id=48462&r=nozend
MySQL Configuration Error:
http://bugs.php.net/fix.php?id=48462&r=mysqlcfg
