From:	night DOT walker AT tiscalinet DOT it
Message-ID:	<38E3B107.52690C10@tiscalinet.it>
Date:	Thu, 30 Mar 2000 21:54:47 +0200
X-Mailer:	Mozilla 4.7 [en] (WinNT; I)
X-Accept-Language:	en,pdf
MIME-Version:	1.0
To:	DJ Delorie <djgpp AT delorie DOT com>
Subject:	Allegro and interrupts: Again!
Reply-To:	djgpp AT delorie DOT com

>>I must call sin() inside a timer function (i can't use a LUT,
>>would be too inaccurate...)

Damian Yerrick wrote:
>Would cubic interpolation on a lookup table with 1,024 entries be too
inaccurate?

Of course not! That would be PERFECT!!!
........
WHAT is a cubic interpolation?  :-)


Hans-Bernard Broeker wrote:
>...you can always lookup the size of the sin() function...
How?
Allegro uses a fake function... I can't add a fake func on a library
func...
I have to compile my own sin() from the libm src?

Grendel wrote:
>...the code executed in a timer function should be as little as
possible...
Yeah I know, but i need to update a sinusoid graph with a very accurate
timing...
A polling loop would lose steps when doing something slow (like the
screen refresh)
I've already tried it.

However thanx to all for the feedback and for keeping helping newbies...

- Raw text -