Consistent constant names and values

apache · Oct 23, 2021 · 1a70cb0 · 1a70cb0
1 parent 481e922
commit 1a70cb0
Show file tree

Hide file tree

Showing 2 changed files with 4 additions and 4 deletions.
diff --git a/...ribution/src/main/java/org/apache/commons/statistics/distribution/NormalDistribution.java b/...ribution/src/main/java/org/apache/commons/statistics/distribution/NormalDistribution.java
@@ -29,7 +29,7 @@
  */
 public final class NormalDistribution extends AbstractContinuousDistribution {
     /** 0.5 * ln(2 * pi). Computed to 25-digits precision. */
-    private static final double HALF_LOG_2_PI = 0.9189385332046727417803297;
+    private static final double HALF_LOG_TWO_PI = 0.9189385332046727417803297;
 
     /** Mean of this distribution. */
     private final double mean;
@@ -58,7 +58,7 @@ private NormalDistribution(double mean,
                                double sd) {
         this.mean = mean;
         standardDeviation = sd;
-        logStandardDeviationPlusHalfLog2Pi = Math.log(sd) + HALF_LOG_2_PI;
+        logStandardDeviationPlusHalfLog2Pi = Math.log(sd) + HALF_LOG_TWO_PI;
         // Minimise rounding error by computing sqrt(2 * sd * sd) exactly.
         // Compute using extended precision with care to avoid over/underflow.
         sdSqrt2 = ExtendedPrecision.sqrt2xx(sd);

diff --git a/...ibution/src/main/java/org/apache/commons/statistics/distribution/PoissonDistribution.java b/...ibution/src/main/java/org/apache/commons/statistics/distribution/PoissonDistribution.java
@@ -24,8 +24,8 @@
  * Implementation of the <a href="http://en.wikipedia.org/wiki/Poisson_distribution">Poisson distribution</a>.
  */
 public final class PoissonDistribution extends AbstractDiscreteDistribution {
-    /** 0.5 * ln(2 &pi;). */
-    private static final double HALF_LOG_TWO_PI = 0.5 * Math.log(2 * Math.PI);
+    /** 0.5 * ln(2 * pi). Computed to 25-digits precision. */
+    private static final double HALF_LOG_TWO_PI = 0.9189385332046727417803297;
     /** Default maximum number of iterations. */
     private static final int DEFAULT_MAX_ITERATIONS = 10000000;
     /** Default convergence criterion. */