Re: must go faster!
From: Severian (severian_at_chlamydia-is-not-a-flower.com)
Date: 03/18/05
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Date: Fri, 18 Mar 2005 13:27:49 GMT
On Fri, 18 Mar 2005 09:31:11 +0100, "Bruno van Dooren"
<microvax@hotmail.com> wrote:
<snip>
>dividing an integer by 2 however is often replaced by shifting the bits 1
>position to the right, because it is faster and it has the exact same
>result.
In standard C and C++, this is necessarily true only for unsigned
values!
The result of right-shifting a signed quantity is
implementation-defined.
-- Sev
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