From: PJ Fanning <fanningpj@apache.org>
Date: Tue, 25 Jan 2022 22:49:03 +0000 (+0000)
Subject: normdist (init work)
X-Git-Tag: REL_5_2_1~151
X-Git-Url: https://source.dussan.org/?a=commitdiff_plain;h=9989999916321c5bd4ad7b3f05106d0aa9a14aa0;p=poi.git

normdist (init work)

git-svn-id: https://svn.apache.org/repos/asf/poi/trunk@1897476 13f79535-47bb-0310-9956-ffa450edef68
---

diff --git a/poi/src/main/java/org/apache/poi/ss/formula/functions/NormDist.java b/poi/src/main/java/org/apache/poi/ss/formula/functions/NormDist.java
index 9d34dcee97..9a9ea03e02 100644
--- a/poi/src/main/java/org/apache/poi/ss/formula/functions/NormDist.java
+++ b/poi/src/main/java/org/apache/poi/ss/formula/functions/NormDist.java
@@ -36,7 +36,7 @@ public final class NormDist extends Fixed4ArgFunction implements FreeRefFunction
 
     static double probability(double x, double mean, double stdev, boolean cumulative) {
         NormalDistribution normalDistribution = new NormalDistribution(mean, stdev);
-        return cumulative ? normalDistribution.cumulativeProbability(x) : normalDistribution.probability(x);
+        return cumulative ? normalDistribution.cumulativeProbability(x) : normalDistribution.density(x);
     }
 
     @Override
diff --git a/poi/src/test/java/org/apache/poi/ss/formula/functions/TestNormDist.java b/poi/src/test/java/org/apache/poi/ss/formula/functions/TestNormDist.java
index 66894e1fc0..1202430183 100644
--- a/poi/src/test/java/org/apache/poi/ss/formula/functions/TestNormDist.java
+++ b/poi/src/test/java/org/apache/poi/ss/formula/functions/TestNormDist.java
@@ -46,8 +46,7 @@ final class TestNormDist {
     @Test
     void testBasic() {
         confirmValue("42", "40", "1.5", true, 0.9087888);
-        //TODO needs investigation
-        //confirmValue("42", "40", "1.5", false, 0.10934);
+        confirmValue("42", "40", "1.5", false, 0.10934);
     }
 
     @Test