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Re: gsl_sf_ellint_P


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/


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