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Re: gsl_sf_coupling_3j
- From: Brian Gough <bjg at network-theory dot co dot uk>
- To: <jdwright at wesleyan dot edu>
- Cc: <gsl-discuss at sources dot redhat dot com>
- Date: Tue, 21 May 2002 21:54:58 +0100 (BST)
- Subject: Re: gsl_sf_coupling_3j
- References: <1021961016.3ce9e3388be05@mail.wesleyan.edu>
jdwright@wesleyan.edu writes:
> Dear gsl users,
> Does anyone out there have experience using the
> "gsl_sf_coupling_3j" routine of the "gsl_sf_coupling" package? I
> wonder if the call:
> gsl_sf_coupling_3j (two_ja,two_jb,two_jc,two_ma,two_mb,two_mc)
> yields accurate results for large values of two_ja, two_jb, and
> two_jc around 30 with two_ma=0,two_mb=0,two_mc=0.
> Thanks,
> J. David Wright Physics Department Wesleyan University
> jdwright@wesleyan.edu
The result->error term from the full version of the function
gsl_sf_coupling_3j_e() should give an estimate of the error.
If it's not accurate please send a bug report, thanks. The exact
value could be computed to high precision using GP-PARI, which is free
software.
regards
Brian Gough