ccrtp-devel
[Top][All Lists]
Advanced

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: [Ccrtp-devel] timevalIntervalTo65536 function


From: Federico Montesino Pouzols
Subject: Re: [Ccrtp-devel] timevalIntervalTo65536 function
Date: Wed, 27 Apr 2005 11:55:36 +0200
User-agent: Mutt/1.5.8i

Right, those values of tv_usec higher than 524288 :) would be wrongly
interpreted as negative values. It's also fixed in CVS. Thanks!

On Mon, Apr 25, 2005 at 09:53:26PM +0900, Takegami, Takashi wrote:
> Hello,
> 
>   I have a question in timevalIntervalTo65536 function (rtcppkt.cpp).
>   Doesn't it output wrong value?  t.tv_usec has the value of minus,
> after "t.tv_usec << 12".
> 
>   For example,
>     t.tv_usec = 900000(10) = 00000000000011011011101110100000(2)
>     "t.tv_usec << 12" then, 1101101110111010000000...(2)
>     In this case, t.tv_usec has the value of minus, because t.tv_usec is
> not uint32.
>     So that, timevalIntervalTo65536 function outputs more smaller value
> than the right value.
> 
> 
>   - result += (t.tv_usec << 12) / 125000 * 2;
>   + result += ((unsigned int)(t.tv_usec << 12)) / 125000 * 2;
> 
> 
> Hope this helps.
> -- 
> TAKEGAMI
> 
> 
> _______________________________________________
> Ccrtp-devel mailing list
> address@hidden
> http://lists.gnu.org/mailman/listinfo/ccrtp-devel




reply via email to

[Prev in Thread] Current Thread [Next in Thread]