[commons-statistics] 01/10: Use Math.lop1p

[aherbert]

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aherbert pushed a commit to branch master
in repository https://gitbox.apache.org/repos/asf/commons-statistics.git

commit 174022b6954d49f345d04e66152493a183ca8a3c
Author: aherbert <aherb...@apache.org>
AuthorDate: Wed Jul 21 13:55:53 2021 +0100

    Use Math.lop1p
---
 .../apache/commons/statistics/distribution/ExponentialDistribution.java | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git 
a/commons-statistics-distribution/src/main/java/org/apache/commons/statistics/distribution/ExponentialDistribution.java
 
b/commons-statistics-distribution/src/main/java/org/apache/commons/statistics/distribution/ExponentialDistribution.java
index e076197..dac9bc6 100644
--- 
a/commons-statistics-distribution/src/main/java/org/apache/commons/statistics/distribution/ExponentialDistribution.java
+++ 
b/commons-statistics-distribution/src/main/java/org/apache/commons/statistics/distribution/ExponentialDistribution.java
@@ -109,7 +109,7 @@ public class ExponentialDistribution extends 
AbstractContinuousDistribution {
         } else if (p == 1) {
             ret = Double.POSITIVE_INFINITY;
         } else {
-            ret = -mean * Math.log(1 - p);
+            ret = -mean * Math.log1p(-p);
         }
 
         return ret;