Sorry, it's my faults. I should change the line
long b = (a & 0xFFFFFFFF);
to
long b = (a & 0xFFFFFFFFL);
--- 09年2月18日，周三, Jiang <webs...@yahoo.cn> 写道：
发件人: Jiang <webs...@yahoo.cn>
主题: [android-developers] Does bitwise operation "& " for the number of contains
bug?
收件人: android-developers@googlegroups.com
日期: 2009,218,周三,4:41下午
Hello guys,
I want to obtain least 32 bits from a number of type long, so I perform bitwise
operation "&" on the number with bits mask 0xFFFFFFFF, but the result is error,
it still contains other bits.
for example:
long a = 0x1234567890abL;
long b = (a & 0xFFFFFFFF);
I expect the value of b is 0x567890abL, but in practice, it is still
0x1234567890abL.
Is this a bug ?
Thanks.
-John.
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