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Re: even.pl solutions
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From:
Bart Lateur
Date:
January 29, 2002 01:11
Subject:
Re: even.pl solutions
Message ID:
ejpc5ugu4mpvpppbflpigjkb1eja0697bi@4ax.com
On Mon, 28 Jan 2002 22:05:47 -0500, Rick Myers wrote:
>> > ~$. is odd if $. is even
>>
>> What is this? Tell me more, I'm lost.
>
>I didn't get that part myself...
Bitwise "not" will invert all bits, including the lowest one. So this
test for even/odd will return complementary results in this case.
In 2's complement, bitwise not on 1 will return -2, bitwise not on 2
will return -3. The sum is always -1 (all bits set).
--
Bart.
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