Mail Archives: djgpp/1997/02/01/00:07:31
On Thu, 30 Jan 1997 02:15:42 +0000 Paul Shirley
<Paul AT foobar DOT co DOT uk DOT chocolat> writes:
>In article <199701290130 DOT UAA02417 AT delorie DOT com>, DJ Delorie
><dj AT delorie DOT com> writes
>>
>>> function. Anyway, here's my problem; To my understanding the
>following
>>> are 100% equal:
>>>
>>> other_stuff = stuff / 256;
>>> other_stuff = stuff << 8;
>>
>>The second multiplies. Try ">> 8" instead.
>>
>
>And if other_stuff is signed, >>8 and /256 aren't identical either.
>(which might save you some debugging later ;)
Actually they are. If it's signed, then I've noticed gcc shifts in the
sign bit (with sal instead of shl).
...Chambers
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