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Re: gsl_sf_ellint_P
- From: Brian Gough <bjg at network-theory dot co dot uk>
- To: Andras Zsenei <zseneia at mail dot cern dot ch>
- Cc: gsl-discuss at sources dot redhat dot com
- Date: Wed, 17 Nov 2004 20:01:09 +0000
- Subject: Re: gsl_sf_ellint_P
- References: <Pine.LNX.4.58.0411111540380.21395@lxplus069.cern.ch>
Andras Zsenei writes:
> I have a question concerning gsl_sf_ellint_P.
>
> In some places (Abramowitz and Stegun, Mathematica) it is defined with
> (1 - nu sin^2theta) in the denominator. However, your definition in the
> Legendre form contains (1 + nu sin^2theta). What is the reason of having a
> + sign instead of a - ?
We use the Carlson form of the integrals (see p66 in the manual for a
reference).
--
regards
Brian Gough
Network Theory Ltd,
Commercial support for GSL --- http://www.network-theory.co.uk/gsl/