From: Hubert HOLIN (Hubert.Holin_at_[hidden])
Date: 2001-04-11 16:50:06
Paris (U.E.), le 11/04/2001
--- In boost_at_y..., Peter Schmitteckert (boost) <boost_at_s...> wrote:
> On Tuesday 10 April 2001 22:58, you wrote:
> > I would like to request a review of the following three
> > libraries:
> > 1) Special functions
> I just had a short look at the "Special functions",
> and I would like to suggest to rename the packet.
> This packet define a few extensions to the trigonometric
> functions, which I wouldn't call special functions.
> AFAIK the notion of s"special functions" refers to:
> ->Gamma-, Beta-, incomplete Gamma-, Error-,
> Chi-square- functions, probability functions,
> -> exponential integrals, all kind of Bessel functions,
> -> hypergeometric functions,
> -> elliptic integrals, Cosine & SIne & Dawson integral
> -> sperical harmonics
> & ... more stuff you can find in "Abramowitz & Stegun"
> Best wishes,
Actually, a "special function" is any function one cares to
name... Those in A&S are merely some of the most well-known
(essentially because they are the most usefull).
That being said, calling the file as I did
"special_functions.hpp" is indeed pompously overblown...
I would like the name to stay, however, if only as a place
holder. It is my hope that it will serve as the nucleus of a bona fide
special functions library (note that my implementations there are
simply stop-gap entries of some of the functions I happened to need at
some time or another, including for the quaternions, in addition to
being ridiculously few). Ideally, this will encompass the successor to
A&S (http://dlmf.nist.gov/). That will necessarilly entail the
decomposition into several files, of which this one will be but one
among many. One has to take a first step, anyway. This is just one of
the first steps, also, of a possible numerical section of boost, along
with the "Math Constants Library" soon under review (by another
contributor), and "More Math", and of course with the matrices, or
(multi-)linear algebra, libraries taking shape. One could then also
dream about a boostification of COOOL (http://timna.Mines.EDU/cwpcodes/
In the end, of course, I have no objection to changing the
name, and I am open to any suggestion.
> BTW: Looking at this package I wondered if someone is working
> on Clebsch-Gordon coefficients and 3j, 6j and 9j symbols?
P.S.: Well, wouldn't that be a nice thing to do? ;-)
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