code questions.

[Tony Wetmore]

Scott,

I just tried the following:

   a = (unsigned short) ( a + 1 ) % b;

which appears to work as you expect.  I tried it using gcc 3.4.4 on 
Windows (Cygwin).

Good luck!

--
Tony Wetmore
Raytheon Solipsys


Scott Phuong wrote:
> I see. Well, thank you very much for your help. I appreciate the quick response.
> 
> Scott
> 
> On Mon, Jun 2, 2008 at 7:11 PM, me22 <me22.ca@gmail.com> wrote:
>> On Mon, Jun 2, 2008 at 10:04 PM, Scott Phuong <mycleanjunk@gmail.com> wrote:
>>> Thanks so much for your quick reply. This code is simliar to code in a
>>> third party source code that I have to fix and they do this all over
>>> the place. The question is w/o touching their code is there a way I
>>> can fix this?
>> Switch to a platform with 16-bit ints?
>>
>>> I tried explicitly casting the 1 to an unsigned short
>>> but it doesn't seem to work like this:
>>>
>>> a = (a + (unsigned short) 1) % b.
>>>
>> More evidence that you're hitting integral promotion, so there's
>> basically nothing you can do about it.
>>
>> (Besides make sure a is never that large :P)
>>
> 
>