Special functions not very accurate
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Key: MATH-166
URL: https://issues.apache.org/jira/browse/MATH-166
Project: Commons Math
Issue Type: Bug
Affects Versions: 1.1
Reporter: Lukas Theussl
Priority: Minor
Attachments: MATH-166.patch
The Gamma and Beta functions return values in double precision but the default
epsilon is set to 10e-9. I think that the default should be set to the highest
possible accuracy, as this is what I'd expect to be returned by a double
precision routine. Note that the erf function already uses a call to
Gamma.regularizedGammaP with an epsilon of 1.0e-15.
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