From 28c30e9190a9c2710a4e80a8adc650ca85ce128b Mon Sep 17 00:00:00 2001
From: Gilles Sadowski <erans@apache.org>
Date: Thu, 13 Dec 2012 12:47:07 +0000
Subject: [PATCH] Unused argument (found by PMD).

git-svn-id: https://svn.apache.org/repos/asf/commons/proper/math/trunk@1421263 13f79535-47bb-0310-9956-ffa450edef68
---
 .../optim/nonlinear/scalar/noderiv/CMAESOptimizer.java      | 6 ++----
 .../commons/math3/optimization/direct/CMAESOptimizer.java   | 6 ++----
 2 files changed, 4 insertions(+), 8 deletions(-)

diff --git a/src/main/java/org/apache/commons/math3/optim/nonlinear/scalar/noderiv/CMAESOptimizer.java b/src/main/java/org/apache/commons/math3/optim/nonlinear/scalar/noderiv/CMAESOptimizer.java
index 404941bb9..06b83972b 100644
--- a/src/main/java/org/apache/commons/math3/optim/nonlinear/scalar/noderiv/CMAESOptimizer.java
+++ b/src/main/java/org/apache/commons/math3/optim/nonlinear/scalar/noderiv/CMAESOptimizer.java
@@ -431,7 +431,7 @@ public class CMAESOptimizer
             if (diagonalOnly <= 0) {
                 updateCovariance(hsig, bestArx, arz, arindex, xold);
             } else {
-                updateCovarianceDiagonalOnly(hsig, bestArz, xold);
+                updateCovarianceDiagonalOnly(hsig, bestArz);
             }
             // Adapt step size sigma - Eq. (5)
             sigma *= Math.exp(Math.min(1, (normps/chiN - 1) * cs / damps));
@@ -663,11 +663,9 @@ public class CMAESOptimizer
      * @param hsig Flag indicating a small correction.
      * @param bestArz Fitness-sorted matrix of the gaussian random values of the
      * current offspring.
-     * @param xold xmean matrix of the previous generation.
      */
     private void updateCovarianceDiagonalOnly(boolean hsig,
-                                              final RealMatrix bestArz,
-                                              final RealMatrix xold) {
+                                              final RealMatrix bestArz) {
         // minor correction if hsig==false
         double oldFac = hsig ? 0 : ccov1Sep * cc * (2 - cc);
         oldFac += 1 - ccov1Sep - ccovmuSep;
diff --git a/src/main/java/org/apache/commons/math3/optimization/direct/CMAESOptimizer.java b/src/main/java/org/apache/commons/math3/optimization/direct/CMAESOptimizer.java
index 41497074c..147c8ae51 100644
--- a/src/main/java/org/apache/commons/math3/optimization/direct/CMAESOptimizer.java
+++ b/src/main/java/org/apache/commons/math3/optimization/direct/CMAESOptimizer.java
@@ -550,7 +550,7 @@ public class CMAESOptimizer
             if (diagonalOnly <= 0) {
                 updateCovariance(hsig, bestArx, arz, arindex, xold);
             } else {
-                updateCovarianceDiagonalOnly(hsig, bestArz, xold);
+                updateCovarianceDiagonalOnly(hsig, bestArz);
             }
             // Adapt step size sigma - Eq. (5)
             sigma *= Math.exp(Math.min(1, (normps/chiN - 1) * cs / damps));
@@ -790,11 +790,9 @@ public class CMAESOptimizer
      * @param hsig Flag indicating a small correction.
      * @param bestArz Fitness-sorted matrix of the gaussian random values of the
      * current offspring.
-     * @param xold xmean matrix of the previous generation.
      */
     private void updateCovarianceDiagonalOnly(boolean hsig,
-                                              final RealMatrix bestArz,
-                                              final RealMatrix xold) {
+                                              final RealMatrix bestArz) {
         // minor correction if hsig==false
         double oldFac = hsig ? 0 : ccov1Sep * cc * (2 - cc);
         oldFac += 1 - ccov1Sep - ccovmuSep;