28
86%

Ran 11 Aug 2016 02:52PM UTC

Jobs 3

Files 3

Run time 1min

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Build # 28

Build Type

push

travis-ci

Committed by

sbinet

Commit Message

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.

Run Details

1804 of 2044 relevant lines covered (88.26%)

5.64 hits per line

Jobs

ID	Job ID	Ran	Coverage
2	28.2	11 Aug 2016 02:53PM UTC	88.26	Travis Job 28.2
3	28.3	11 Aug 2016 02:52PM UTC	88.26	Travis Job 28.3
4	28.4	11 Aug 2016 02:52PM UTC	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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