From: Filip Floegel <floegel@itp.uni-hannover.de>
To: gsl-discuss@sources.redhat.com
Subject: gsl_sf_coupling_3j
Date: Wed, 02 Oct 2002 08:46:00 -0000 [thread overview]
Message-ID: <20021002154552.GA19031@itp.uni-hannover.de> (raw)
hello gsl community,
gsl_sf_coupling_3j doesn't work properly for large
angular mementa like j1=j2=j3=40 m1=m2=m3=0 !!!
gsl_sf_coupling_3j_e(80,80,80,0,0,0,&result)
which correspond to j1=j2=j3=40 m1=m2=m3=0
gives me:
result.val = 0.0625
result.err = 0.172766
mathematica gives me:
N[ThreeJSymbol[{40,0},{40,0},{40,0}]] = 0.0149685
my guess is that gamma.c which is used for calculating fractional
numbers probably diverges for large integers.
cheers,
ff
--
+---------------------------------------------------------------+
| dipl.phys. Filip Floegel e-mail:floegel@itp.uni-hannover.de |
| ITP/Universitaet Hannover phone: 0511/762-3381 |
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+---------------------------------------------------------------+
next reply other threads:[~2002-10-02 15:46 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-10-02 8:46 Filip Floegel [this message]
2002-10-03 13:21 ` gsl_sf_coupling_3j Brian Gough
2002-10-09 12:04 Abramowitz and Stegun (1964) online Brian Gough
2002-10-15 6:55 ` gsl_sf_coupling_3j Serge Winitzki
2002-12-31 9:55 gsl_sf_coupling_3j jdwright
2002-05-21 7:39 ` gsl_sf_coupling_3j jdwright
2002-12-31 9:55 ` gsl_sf_coupling_3j Brian Gough
2002-05-21 14:14 ` gsl_sf_coupling_3j Brian Gough
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