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[Bug-gsl] lambert W function


From: Katrin Wolff
Subject: [Bug-gsl] lambert W function
Date: Wed, 25 Apr 2007 17:35:34 +0200

Hi,

The Lambert W(x) function gives errors for some values x around 1.6. If I 
re-insert the value into the function with high precision the error persists, 
if I truncate after the 16th digit and fill up with zeros it does not. The 
error message is

gsl: lambert.c:224: ERROR: gsl_sf_lambert_W0_e(x, &result)
Default GSL error handler invoked.
doitflag.sh: line 5: 21853 Abort trap

and example values to produce it are

1.6014351509876314505476102567627094686031341552734
1.6849341956993197921832461361191235482692718505859


Cheers,
Katrin
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