#38225 [Opn->Bgs]: ">>" gives unexpected results
| From: | nlopess@php.net | Date: | Mon, 14 Aug 2006 22:14:16 +0000 |
| Subject: | #38225 [Opn->Bgs]: ">>" gives unexpected results | ||
| References: | 1 | Groups: | php.bugs |
| Request: | Send a blank email to php-bugs+get-100797@lists.php.net to get a copy of this message | ||
ID: 38225
Updated by: nlopess@php.net
Reported By: bretschneider at cleverbridge dot com
-Status: Open
+Status: Bogus
Bug Type: Math related
Operating System: Linux 2.6.12-1.1381_FC3
PHP Version: 5.1.4
New Comment:
I can't reproduce anything. I get the same results with PHP and C (gcc
3.4).
Previous Comments:
------------------------------------------------------------------------
[2006-07-26 15:41:38] bretschneider at cleverbridge dot com
Description:
------------
">>" gives unexpected results
Reproduce code:
---------------
$x = 0x00FFFF00;
printf("0x%8X\n", ($x >> 8)); // I get "0x FFFF"
printf("0x%8X\n", ($x << 8) >> 8); // I get 0xFFFFFF00 (bad)
printf("0x%8X\n", ($x << 0) >> 8); // I get 0xFFFFFFFF (bad)
$x = 0xFFFFFFFF;
printf("0x%8X\n", ($x >> 8) << 8); // I get 0xFFFFFF00 (bad)
Expected result:
----------------
0x FFFF
0x FFFF00
0x FFFFFF
0x FFFF00
Actual result:
--------------
0x FFFF
0xFFFFFF00
0xFFFFFFFF
0xFFFFFF00
------------------------------------------------------------------------
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Edit this bug report at http://bugs.php.net/?id=38225&edit=1