From: spellucci@mathematik.tu-darmstadt.de (Peter Spellucci)
Newsgroups: sci.math.num-analysis
Subject: Re: Info about calculation of trig/exp functions
Date: 9 Jun 1998 07:37:46 GMT

In article <6lgein$9ls$1@salomon.mchp.siemens.de>,
 martin.kahlert@keksy.mchp.siemens.de (Martin Kahlert) writes:
|> Hi,
|> I would like to find information about fast algorithms 
|> (on computers) to calculate sin/cos/tan/atan/exp/log/sqrt/...
|> Is there info on the net or is there a book about that stuff? 
|> Anything about Pade approx/Tschebyscheff polynomials/
|> best approximation ?
for systems like Intel these methods are of no use. there the
CORDIC scheme and its further enhancements are in use. for some information
see
 * CORDIC algorithms.
 * The original code was published in Docter Dobbs Journal issue ddj9010.
 * The ddj version can be obtained using FTP from SIMTEL and other places.
 *
 * Converted to ANSI-C (with prototypes) by P. Knopper
http://einstein.et.tudelft.nl/~knop/
information of the kind you desire is obtainable from
 http://www.ens-lyon.fr/~jmmuller/book_functions.html
and
Cody, William J., Jr. and William Waite, "Software Manual for the
   Elementary Functions", Englewood Cliffs, NJ: Prentice Hall,
   Inc., 1980   (No ISBN known by me.)
hope this helps
peter