ID: 39680
User updated by: diefans at googlemail dot com
Reported By: diefans at googlemail dot com
Status: Bogus
Bug Type: *Math Functions
Operating System: Linux
PHP Version: 5.2.0
New Comment:
So all versions prior 5.2.0 are buggy - right?
Previous Comments:
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[2006-11-29 11:30:22] [EMAIL PROTECTED]
The logic behind this conversion is quite plain:
if (double > LONG_MAX) {
long = (unsigned long) double;
} else {
long = (long) double;
}
You can try to compile a simple program in C and see that the result is
the same.
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[2006-11-29 10:19:36] diefans at googlemail dot com
Description:
------------
since version 5.2.0 when I cast a negative float smaller than
-2147483648 into an int all bits are lost and the minimum Integer value
is returned. For positive floats larger than the max integer value all
is fine.
It is not possible to perform bitwise calculations with negative
overflowing values since all usable information is lost.
Reproduce code:
---------------
echo (int) -40000000000;
echo (int) 40000000000;
Expected result:
----------------
-1345294336
1345294336
Actual result:
--------------
-2147483648
1345294336
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Edit this bug report at http://bugs.php.net/?id=39680&edit=1
