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gonum / mathext / 28
86%

Build:
DEFAULT BRANCH: master
Ran 11 Aug 2016 02:52PM UTC
Jobs 3
Files 3
Run time 1min
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mathext: add Beta and Lbeta special functions

This CL adds the implementation for the complete Beta and Lbeta
special functions.

Follow the lead of C++17's std::beta(x,y) and cephes.

This CL investigated 2 different implementations, with the following
performances:

BenchmarkBeta-4 	10000000	       221 ns/op
BenchmarkBeta2-4	10000000	       157 ns/op

Beta uses a slower implementation, using:
  exp(lgamma(x)+lgamma(y)-lgamma(x+y))

instead of the faster:
  Γ(a)Γ(b) / Γ(a+b)

The former being numerically more stable at extreme values.

1804 of 2044 relevant lines covered (88.26%)

5.64 hits per line

Jobs
ID Job ID Ran Files Coverage
2 28.2 11 Aug 2016 02:53PM UTC 0
88.26
Travis Job 28.2
3 28.3 11 Aug 2016 02:52PM UTC 0
88.26
Travis Job 28.3
4 28.4 11 Aug 2016 02:52PM UTC 0
88.26
Travis Job 28.4
Source Files on build 28
Detailed source file information is not available for this build.
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