commit b34e783874339ac1a043f040584d52d54858feaf
author Gilles Sadowski <gilles@harfang.homelinux.org> Sat Jan 27 17:15:53 2018 +0100
committer Gilles Sadowski <gilles@harfang.homelinux.org> Sat Jan 27 17:15:53 2018 +0100
tree c8b4cbfa13582c1826ea3d4e04ea5f1b6df1c1a3
parent 9cadb96cbb82c37187b6b4833c73cc0340c08454

Use "log1p(x)" instead of "log(1 + x)".

commons-statistics-distribution/src/main/java/org/apache/commons/statistics/distribution/TDistribution.java

diff --git a/commons-statistics-distribution/src/main/java/org/apache/commons/statistics/distribution/TDistribution.java b/commons-statistics-distribution/src/main/java/org/apache/commons/statistics/distribution/TDistribution.java
index a579e15..e5baad3 100644
--- a/commons-statistics-distribution/src/main/java/org/apache/commons/statistics/distribution/TDistribution.java
+++ b/commons-statistics-distribution/src/main/java/org/apache/commons/statistics/distribution/TDistribution.java
@@ -77,7 +77,7 @@
     @Override
     public double logDensity(double x) {
         final double nPlus1Over2 = dofOver2 + 0.5;
-        return factor - nPlus1Over2 * Math.log(1 + x * x / degreesOfFreedom);
+        return factor - nPlus1Over2 * Math.log1p(x * x / degreesOfFreedom);
     }
 
     /** {@inheritDoc} */