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Subject: Re: get_ms() bug

Author: Anthony Cozzie

Date: 15:33:18 05/13/04

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On May 13, 2004 at 17:42:01, Eugene Nalimov wrote:

>On May 13, 2004 at 17:37:08, Anthony Cozzie wrote:
>
>>On May 13, 2004 at 16:11:34, Jeff GAZET wrote:
>>
>>>hi,
>>>
>>>All versions of my engine have got a bug since a few hours : you can't set a
>>>fixed depth :-(
>>>
>>>for those who are using something like this :
>>>
>>>int stop_time;
>>>stop_time=get_ms()+1000;
>>>
>>>this is buggy now, as get_ms()>2146589376
>>>and long is 2147483647
>>
>>Always use subtraction:
>>
>>if(get_ms() - start_time > search_time ) do something;
>
>According to the C/C++ standards for signed types compiler can rewrite your
>condition as
>    if(get_ms() > start_time + search_time ) do something;
>
>Thanks,
>Eugene
>
>>anthony

Fortunately I use unsigned ints ;)  The engineer in me deplores wasting a _full
bit_ on something as worthless as the sign.  The physicist in me always gets the
sign wrong anyway . . . .

anthony



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