Re: [LAU] building a debian system for audio

On Wed, May 23, 2007 at 04:57:08PM -0500, Jack O'Quin wrote:

> I know less about this than you do, Fons. But, I always seem to end up
> adding a rint() to statements like that. Not because I understand exactly
> what is going on, but because otherwise GCC gives me warning messages
> about casting float to int.
>
> What happens, if you change those lines like this?...
>
> y = (int) rint((x - a) * b + 0.5f);

Tried both floorf (x + 0.5f) which is my standard way of rounding
floats, and rint (x). Same results - the problem remains.

What is even more scary is this: adding a extra printf() _after_ all
the calculations and _after_ a number of other printf() that I have
been using to see what is happening is enough to remove the error -
it modifies the values printed by the previous printf()...
I'm now pretty sure this is the optimiser having an identity
crisis...

-- 
FA
Follie! Follie! Delirio vano è questo !
_______________________________________________
Linux-audio-user mailing list
Linux-audio-user@email-addr-hidden
http://lists.linuxaudio.org/mailman/listinfo.cgi/linux-audio-user