feat: Add negative binomial distribution (#113)

* distributions: add negative binomial distribution * distributions::negative_binomial: rustfmt * distributions::negative_binomial: minor doc fixes * distributions::negative_binomial: choose more interesting CDF test values * Address PR comments * distributions::negative_binomial: floor x in CDF calculation which allows the test_discrete tests to pass * distributions::negative_binomial: Minor cleanup
statrs-dev · Jul 6, 2020 · 660eb9e · 660eb9e
1 parent 72c767f
commit 660eb9e
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Showing 3 changed files with 470 additions and 1 deletion.
diff --git a/src/distribution/mod.rs b/src/distribution/mod.rs
@@ -16,6 +16,7 @@ pub use self::erlang::Erlang;
 pub use self::exponential::Exponential;
 pub use self::fisher_snedecor::FisherSnedecor;
 pub use self::gamma::Gamma;
+pub use self::negative_binomial::NegativeBinomial;
 pub use self::geometric::Geometric;
 pub use self::hypergeometric::Hypergeometric;
 pub use self::inverse_gamma::InverseGamma;
@@ -53,6 +54,7 @@ mod log_normal;
 mod multinomial;
 mod multivariate_normal;
 mod normal;
+mod negative_binomial;
 mod pareto;
 mod poisson;
 mod students_t;