Re: MSEC_TO_JIFFIES is messed up...

[Davide Libenzi <davidel@xxxxxxxxxxxxxxx>]

On Wed, 12 May 2004, Ingo Molnar wrote:

> 
> * Davide Libenzi <davidel@xxxxxxxxxxxxxxx> wrote:
> 
> > int foo(int i) {
> > 
> > 
> >         return i * 1000 / 1000;
> > }
> 
> try unsigned and you'll see:
> 
>         pushl   %ebp
>         movl    %esp, %ebp
>         movl    8(%ebp), %edx
>         movl    %edx, %eax
>         sall    $2, %eax
>         addl    %edx, %eax
>         leal    0(,%eax,4), %edx
>         addl    %edx, %eax
>         leal    0(,%eax,4), %edx
>         addl    %edx, %eax
>         leal    0(,%eax,8), %edx
>         movl    $274877907, %eax
>         mull    %edx
>         movl    %edx, %eax
>         shrl    $6, %eax
>         leave
>         ret

Yeah, I see.



- Davide