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From t.@apache.org
Subject [81/82] [math] Update for next development iteration: commons-math4
Date Mon, 16 Feb 2015 22:40:51 GMT
http://git-wip-us.apache.org/repos/asf/commons-math/blob/e4e1ac23/README.md
----------------------------------------------------------------------
diff --git a/README.md b/README.md
index 73cafa4..08172f4 100644
--- a/README.md
+++ b/README.md
@@ -62,7 +62,7 @@ Alternatively you can pull it from the central Maven repositories:
 <dependency>
   <groupId>org.apache.commons</groupId>
   <artifactId>commons-math3</artifactId>
-  <version>3.4</version>
+  <version>3.4.1</version>
 </dependency>
 ```
 

http://git-wip-us.apache.org/repos/asf/commons-math/blob/e4e1ac23/build.xml
----------------------------------------------------------------------
diff --git a/build.xml b/build.xml
index 09177b0..8072d8e 100644
--- a/build.xml
+++ b/build.xml
@@ -44,13 +44,13 @@
   <property name="component.name"          value="commons-math"/>
 
   <!-- The primary package name of this component -->
-  <property name="component.package"       value="org.apache.commons.math3"/>
+  <property name="component.package"       value="org.apache.commons.math4"/>
 
   <!-- The title of this component -->
   <property name="component.title"         value="Commons MATH"/>
 
   <!-- The current version number of this component -->
-  <property name="component.version"       value="3.1-SNAPSHOT"/>
+  <property name="component.version"       value="4.0-SNAPSHOT"/>
 
   <!-- The base directory for component sources -->
   <property name="source.home"             value="src/main/java"/>
@@ -203,7 +203,7 @@
                <classpath refid="test.classpath"/>
                <!-- If test.entry is defined, run a single test, otherwise run all valid tests -->
                <!-- N.B. test.entry must be the full path to the test class, for example:
-               ant test -Dtest.entry=org.apache.commons.math3.util.FastMathTestPerformance
+               ant test -Dtest.entry=org.apache.commons.math4.util.FastMathTestPerformance
                -->
                <test name="${test.entry}" todir="${test.reports}" if="test.entry"/>
                <batchtest todir="${test.reports}" unless="test.entry">

http://git-wip-us.apache.org/repos/asf/commons-math/blob/e4e1ac23/clirr-ignored.xml
----------------------------------------------------------------------
diff --git a/clirr-ignored.xml b/clirr-ignored.xml
index 297b0de..1e90cae 100644
--- a/clirr-ignored.xml
+++ b/clirr-ignored.xml
@@ -19,166 +19,166 @@
 <differences>
 
   <difference>
-    <className>org/apache/commons/math3/geometry/partitioning/Region</className>
+    <className>org/apache/commons/math4/geometry/partitioning/Region</className>
     <differenceType>7005</differenceType> <!-- Method Argument Type changed -->
-    <method>org.apache.commons.math3.geometry.partitioning.Region$Location checkPoint(org.apache.commons.math3.geometry.Vector)</method>
-    <to>org.apache.commons.math3.geometry.partitioning.Region$Location checkPoint(org.apache.commons.math3.geometry.Point)</to>
+    <method>org.apache.commons.math4.geometry.partitioning.Region$Location checkPoint(org.apache.commons.math4.geometry.Vector)</method>
+    <to>org.apache.commons.math4.geometry.partitioning.Region$Location checkPoint(org.apache.commons.math4.geometry.Point)</to>
   </difference>
   <difference>
-    <className>org/apache/commons/math3/geometry/partitioning/Region</className>
+    <className>org/apache/commons/math4/geometry/partitioning/Region</className>
     <differenceType>7012</differenceType> <!-- Method Added to Interface -->
     <method>boolean isFull()</method>
   </difference>
   <difference>
-    <className>org/apache/commons/math3/geometry/partitioning/Region</className>
+    <className>org/apache/commons/math4/geometry/partitioning/Region</className>
     <differenceType>7012</differenceType> <!-- Method Added to Interface -->
-    <method>boolean isFull(org.apache.commons.math3.geometry.partitioning.BSPTree)</method>
+    <method>boolean isFull(org.apache.commons.math4.geometry.partitioning.BSPTree)</method>
   </difference>
   <difference>
-    <className>org/apache/commons/math3/geometry/partitioning/Region</className>
+    <className>org/apache/commons/math4/geometry/partitioning/Region</className>
     <differenceType>7012</differenceType> <!-- Method Added to Interface -->
-    <method>org.apache.commons.math3.geometry.partitioning.BoundaryProjection projectToBoundary(org.apache.commons.math3.geometry.Point)</method>
+    <method>org.apache.commons.math4.geometry.partitioning.BoundaryProjection projectToBoundary(org.apache.commons.math4.geometry.Point)</method>
   </difference>
   <difference>
-    <className>org/apache/commons/math3/geometry/partitioning/Region</className>
+    <className>org/apache/commons/math4/geometry/partitioning/Region</className>
     <differenceType>7006</differenceType> <!-- Method Return Type changed -->
-    <method>org.apache.commons.math3.geometry.Vector getBarycenter()</method>
-    <to>org.apache.commons.math3.geometry.Point</to>
+    <method>org.apache.commons.math4.geometry.Vector getBarycenter()</method>
+    <to>org.apache.commons.math4.geometry.Point</to>
   </difference>
   <difference>
-    <className>org/apache/commons/math3/geometry/partitioning/Hyperplane</className>
+    <className>org/apache/commons/math4/geometry/partitioning/Hyperplane</className>
     <differenceType>7012</differenceType> <!-- Method Added to Interface -->
     <method>double getTolerance()</method>
   </difference>
   <difference>
-    <className>org/apache/commons/math3/geometry/partitioning/Hyperplane</className>
+    <className>org/apache/commons/math4/geometry/partitioning/Hyperplane</className>
     <differenceType>7012</differenceType> <!-- Method Added to Interface -->
-    <method>org.apache.commons.math3.geometry.Point project(org.apache.commons.math3.geometry.Point)</method>
+    <method>org.apache.commons.math4.geometry.Point project(org.apache.commons.math4.geometry.Point)</method>
   </difference>
   <difference>
-    <className>org/apache/commons/math3/geometry/partitioning/Hyperplane</className>
+    <className>org/apache/commons/math4/geometry/partitioning/Hyperplane</className>
     <differenceType>7005</differenceType> <!-- Method Argument Type changed -->
-    <method>double getOffset(org.apache.commons.math3.geometry.Vector)</method>
-    <to>double getOffset(org.apache.commons.math3.geometry.Point)</to>
+    <method>double getOffset(org.apache.commons.math4.geometry.Vector)</method>
+    <to>double getOffset(org.apache.commons.math4.geometry.Point)</to>
   </difference>
   <difference>
-    <className>org/apache/commons/math3/geometry/partitioning/Embedding</className>
+    <className>org/apache/commons/math4/geometry/partitioning/Embedding</className>
     <differenceType>7005</differenceType> <!-- Method Argument Type changed -->
-    <method>org.apache.commons.math3.geometry.Vector toSpace(org.apache.commons.math3.geometry.Vector)</method>
-    <to>org.apache.commons.math3.geometry.Vector toSpace(org.apache.commons.math3.geometry.Point)</to>
+    <method>org.apache.commons.math4.geometry.Vector toSpace(org.apache.commons.math4.geometry.Vector)</method>
+    <to>org.apache.commons.math4.geometry.Vector toSpace(org.apache.commons.math4.geometry.Point)</to>
   </difference>
   <difference>
-    <className>org/apache/commons/math3/geometry/partitioning/Embedding</className>
+    <className>org/apache/commons/math4/geometry/partitioning/Embedding</className>
     <differenceType>7006</differenceType> <!-- Method Return Type changed -->
-    <method>org.apache.commons.math3.geometry.Vector toSpace(org.apache.commons.math3.geometry.Vector)</method>
-    <to>org.apache.commons.math3.geometry.Point</to>
+    <method>org.apache.commons.math4.geometry.Vector toSpace(org.apache.commons.math4.geometry.Vector)</method>
+    <to>org.apache.commons.math4.geometry.Point</to>
   </difference>
   <difference>
-    <className>org/apache/commons/math3/geometry/partitioning/Embedding</className>
+    <className>org/apache/commons/math4/geometry/partitioning/Embedding</className>
     <differenceType>7006</differenceType> <!-- Method Return Type changed -->
-    <method>org.apache.commons.math3.geometry.Vector toSubSpace(org.apache.commons.math3.geometry.Vector)</method>
-    <to>org.apache.commons.math3.geometry.Point</to>
+    <method>org.apache.commons.math4.geometry.Vector toSubSpace(org.apache.commons.math4.geometry.Vector)</method>
+    <to>org.apache.commons.math4.geometry.Point</to>
   </difference>
   <difference>
-    <className>org/apache/commons/math3/geometry/partitioning/Transform</className>
+    <className>org/apache/commons/math4/geometry/partitioning/Transform</className>
     <differenceType>7005</differenceType> <!-- Method Argument Type changed -->
-    <method>org.apache.commons.math3.geometry.Vector apply(org.apache.commons.math3.geometry.Vector)</method>
-    <to>org.apache.commons.math3.geometry.Vector apply(org.apache.commons.math3.geometry.Point)</to>
+    <method>org.apache.commons.math4.geometry.Vector apply(org.apache.commons.math4.geometry.Vector)</method>
+    <to>org.apache.commons.math4.geometry.Vector apply(org.apache.commons.math4.geometry.Point)</to>
   </difference>
   <difference>
-    <className>org/apache/commons/math3/geometry/partitioning/Transform</className>
+    <className>org/apache/commons/math4/geometry/partitioning/Transform</className>
     <differenceType>7006</differenceType> <!-- Method Return Type changed -->
-    <method>org.apache.commons.math3.geometry.Vector apply(org.apache.commons.math3.geometry.Vector)</method>
-    <to>org.apache.commons.math3.geometry.Point</to>
+    <method>org.apache.commons.math4.geometry.Vector apply(org.apache.commons.math4.geometry.Vector)</method>
+    <to>org.apache.commons.math4.geometry.Point</to>
   </difference>
   <difference>
-    <className>org/apache/commons/math3/geometry/partitioning/AbstractRegion</className>
+    <className>org/apache/commons/math4/geometry/partitioning/AbstractRegion</className>
     <differenceType>7005</differenceType> <!-- Method Argument Type changed -->
-    <method>AbstractRegion(org.apache.commons.math3.geometry.partitioning.BSPTree)</method>
+    <method>AbstractRegion(org.apache.commons.math4.geometry.partitioning.BSPTree)</method>
     <to>AbstractRegion(double)</to>
   </difference>
   <difference>
-    <className>org/apache/commons/math3/geometry/partitioning/AbstractRegion</className>
+    <className>org/apache/commons/math4/geometry/partitioning/AbstractRegion</className>
     <differenceType>7004</differenceType> <!-- Method Argument Count Changed -->
     <method>AbstractRegion(java.util.Collection)</method>
   </difference>
   <difference>
-    <className>org/apache/commons/math3/geometry/partitioning/AbstractRegion</className>
+    <className>org/apache/commons/math4/geometry/partitioning/AbstractRegion</className>
     <differenceType>7004</differenceType> <!-- Method Argument Count Changed -->
     <method>AbstractRegion()</method>
   </difference>
   <difference>
-    <className>org/apache/commons/math3/geometry/partitioning/AbstractRegion</className>
+    <className>org/apache/commons/math4/geometry/partitioning/AbstractRegion</className>
     <differenceType>7004</differenceType> <!-- Method Argument Count Changed -->
-    <method>AbstractRegion(org.apache.commons.math3.geometry.partitioning.Hyperplane[])</method>
+    <method>AbstractRegion(org.apache.commons.math4.geometry.partitioning.Hyperplane[])</method>
   </difference>
   <difference>
-    <className>org/apache/commons/math3/geometry/partitioning/AbstractRegion</className>
+    <className>org/apache/commons/math4/geometry/partitioning/AbstractRegion</className>
     <differenceType>7009</differenceType> <!-- Method is now Less Accessible -->
-    <method>AbstractRegion(org.apache.commons.math3.geometry.partitioning.Hyperplane[])</method>
+    <method>AbstractRegion(org.apache.commons.math4.geometry.partitioning.Hyperplane[])</method>
   </difference>
   <difference>
-    <className>org/apache/commons/math3/geometry/partitioning/AbstractRegion</className>
+    <className>org/apache/commons/math4/geometry/partitioning/AbstractRegion</className>
     <differenceType>7006</differenceType> <!-- Method Return Type changed -->
-    <method>org.apache.commons.math3.geometry.Vector getBarycenter()</method>
-    <to>org.apache.commons.math3.geometry.Point</to>
+    <method>org.apache.commons.math4.geometry.Vector getBarycenter()</method>
+    <to>org.apache.commons.math4.geometry.Point</to>
   </difference>
 
   <difference>
-    <className>org/apache/commons/math3/geometry/euclidean/threed/Plane</className>
+    <className>org/apache/commons/math4/geometry/euclidean/threed/Plane</className>
     <differenceType>7005</differenceType> <!-- Method Argument Type changed -->
-    <method>org.apache.commons.math3.geometry.Vector toSpace(org.apache.commons.math3.geometry.Vector)</method>
-    <to>org.apache.commons.math3.geometry.Vector toSpace(org.apache.commons.math3.geometry.Point)</to>
+    <method>org.apache.commons.math4.geometry.Vector toSpace(org.apache.commons.math4.geometry.Vector)</method>
+    <to>org.apache.commons.math4.geometry.Vector toSpace(org.apache.commons.math4.geometry.Point)</to>
   </difference>
   <difference>
-    <className>org/apache/commons/math3/geometry/euclidean/threed/Plane</className>
+    <className>org/apache/commons/math4/geometry/euclidean/threed/Plane</className>
     <differenceType>7006</differenceType> <!-- Method Return Type changed -->
-    <method>org.apache.commons.math3.geometry.Vector toSpace(org.apache.commons.math3.geometry.Vector)</method>
-    <to>org.apache.commons.math3.geometry.euclidean.threed.Vector3D</to>
+    <method>org.apache.commons.math4.geometry.Vector toSpace(org.apache.commons.math4.geometry.Vector)</method>
+    <to>org.apache.commons.math4.geometry.euclidean.threed.Vector3D</to>
   </difference>
   <difference>
-    <className>org/apache/commons/math3/geometry/euclidean/threed/Plane</className>
+    <className>org/apache/commons/math4/geometry/euclidean/threed/Plane</className>
     <differenceType>7006</differenceType> <!-- Method Return Type changed -->
-    <method>org.apache.commons.math3.geometry.Vector toSubSpace(org.apache.commons.math3.geometry.Vector)</method>
-    <to>org.apache.commons.math3.geometry.euclidean.twod.Vector2D</to>
+    <method>org.apache.commons.math4.geometry.Vector toSubSpace(org.apache.commons.math4.geometry.Vector)</method>
+    <to>org.apache.commons.math4.geometry.euclidean.twod.Vector2D</to>
   </difference>
   <difference>
-    <className>org/apache/commons/math3/geometry/euclidean/threed/Line</className>
+    <className>org/apache/commons/math4/geometry/euclidean/threed/Line</className>
     <differenceType>7005</differenceType> <!-- Method Argument Type changed -->
-    <method>org.apache.commons.math3.geometry.Vector toSpace(org.apache.commons.math3.geometry.Vector)</method>
-    <to>org.apache.commons.math3.geometry.Vector toSpace(org.apache.commons.math3.geometry.Point)</to>
+    <method>org.apache.commons.math4.geometry.Vector toSpace(org.apache.commons.math4.geometry.Vector)</method>
+    <to>org.apache.commons.math4.geometry.Vector toSpace(org.apache.commons.math4.geometry.Point)</to>
   </difference>
   <difference>
-    <className>org/apache/commons/math3/geometry/euclidean/threed/Line</className>
+    <className>org/apache/commons/math4/geometry/euclidean/threed/Line</className>
     <differenceType>7006</differenceType> <!-- Method Return Type changed -->
-    <method>org.apache.commons.math3.geometry.Vector toSpace(org.apache.commons.math3.geometry.Vector)</method>
-    <to>org.apache.commons.math3.geometry.euclidean.threed.Vector3D</to>
+    <method>org.apache.commons.math4.geometry.Vector toSpace(org.apache.commons.math4.geometry.Vector)</method>
+    <to>org.apache.commons.math4.geometry.euclidean.threed.Vector3D</to>
   </difference>
   <difference>
-    <className>org/apache/commons/math3/geometry/euclidean/threed/Line</className>
+    <className>org/apache/commons/math4/geometry/euclidean/threed/Line</className>
     <differenceType>7006</differenceType> <!-- Method Return Type changed -->
-    <method>org.apache.commons.math3.geometry.Vector toSubSpace(org.apache.commons.math3.geometry.Vector)</method>
-    <to>org.apache.commons.math3.geometry.euclidean.oned.Vector1D</to>
+    <method>org.apache.commons.math4.geometry.Vector toSubSpace(org.apache.commons.math4.geometry.Vector)</method>
+    <to>org.apache.commons.math4.geometry.euclidean.oned.Vector1D</to>
   </difference>
 
 
   <difference>
-    <className>org/apache/commons/math3/geometry/euclidean/twod/Line</className>
+    <className>org/apache/commons/math4/geometry/euclidean/twod/Line</className>
     <differenceType>7005</differenceType> <!-- Method Argument Type changed -->
-    <method>org.apache.commons.math3.geometry.Vector toSpace(org.apache.commons.math3.geometry.Vector)</method>
-    <to>org.apache.commons.math3.geometry.Vector toSpace(org.apache.commons.math3.geometry.Point)</to>
+    <method>org.apache.commons.math4.geometry.Vector toSpace(org.apache.commons.math4.geometry.Vector)</method>
+    <to>org.apache.commons.math4.geometry.Vector toSpace(org.apache.commons.math4.geometry.Point)</to>
   </difference>
   <difference>
-    <className>org/apache/commons/math3/geometry/euclidean/twod/Line</className>
+    <className>org/apache/commons/math4/geometry/euclidean/twod/Line</className>
     <differenceType>7006</differenceType> <!-- Method Return Type changed -->
-    <method>org.apache.commons.math3.geometry.Vector toSpace(org.apache.commons.math3.geometry.Vector)</method>
-    <to>org.apache.commons.math3.geometry.euclidean.twod.Vector2D</to>
+    <method>org.apache.commons.math4.geometry.Vector toSpace(org.apache.commons.math4.geometry.Vector)</method>
+    <to>org.apache.commons.math4.geometry.euclidean.twod.Vector2D</to>
   </difference>
   <difference>
-    <className>org/apache/commons/math3/geometry/euclidean/twod/Line</className>
+    <className>org/apache/commons/math4/geometry/euclidean/twod/Line</className>
     <differenceType>7006</differenceType> <!-- Method Return Type changed -->
-    <method>org.apache.commons.math3.geometry.Vector toSubSpace(org.apache.commons.math3.geometry.Vector)</method>
-    <to>org.apache.commons.math3.geometry.euclidean.oned.Vector1D</to>
+    <method>org.apache.commons.math4.geometry.Vector toSubSpace(org.apache.commons.math4.geometry.Vector)</method>
+    <to>org.apache.commons.math4.geometry.euclidean.oned.Vector1D</to>
   </difference>
 
 

http://git-wip-us.apache.org/repos/asf/commons-math/blob/e4e1ac23/findbugs-exclude-filter.xml
----------------------------------------------------------------------
diff --git a/findbugs-exclude-filter.xml b/findbugs-exclude-filter.xml
index b971772..6659ad5 100644
--- a/findbugs-exclude-filter.xml
+++ b/findbugs-exclude-filter.xml
@@ -26,12 +26,12 @@
   <!--  the following equality tests are part of the reference algorithms -->
   <!--  which already know about limited precision of the double numbers -->
   <Match>
-    <Class name="org.apache.commons.math3.analysis.solvers.BaseSecantSolver" />
+    <Class name="org.apache.commons.math4.analysis.solvers.BaseSecantSolver" />
     <Method name="doSolve" params="" returns="double" />
     <Bug pattern="FE_FLOATING_POINT_EQUALITY" />
   </Match>
   <Match>
-    <Class name="org.apache.commons.math3.distribution.SaddlePointExpansion" />
+    <Class name="org.apache.commons.math4.distribution.SaddlePointExpansion" />
     <Or>
       <Method name="getDeviancePart" params="double,double" returns="double" />
       <Method name="getStirlingError" params="double" returns="double" />
@@ -39,91 +39,91 @@
     <Bug pattern="FE_FLOATING_POINT_EQUALITY" />
   </Match>
   <Match>
-    <Class name="org.apache.commons.math3.optimization.univariate.BrentOptimizer" />
+    <Class name="org.apache.commons.math4.optimization.univariate.BrentOptimizer" />
     <Method name="localMin" params="boolean,double,double,double,double,double" returns="double" />
     <Bug pattern="FE_FLOATING_POINT_EQUALITY" />
   </Match>
   <Match>
-    <Class name="org.apache.commons.math3.optim.univariate.BrentOptimizer" />
+    <Class name="org.apache.commons.math4.optim.univariate.BrentOptimizer" />
     <Method name="localMin" params="boolean,double,double,double,double,double" returns="double" />
     <Bug pattern="FE_FLOATING_POINT_EQUALITY" />
   </Match>
   <Match>
-    <Class name="org.apache.commons.math3.analysis.solvers.BrentSolver" />
+    <Class name="org.apache.commons.math4.analysis.solvers.BrentSolver" />
     <Method name="brent" params="double,double,double,double" returns="double" />
     <Bug pattern="FE_FLOATING_POINT_EQUALITY" />
   </Match>
   <Match>
-    <Class name="org.apache.commons.math3.analysis.solvers.MullerSolver" />
+    <Class name="org.apache.commons.math4.analysis.solvers.MullerSolver" />
     <Or>
       <Method name="solve"  params="double,double,double,double" returns="double" />
     </Or>
     <Bug pattern="FE_FLOATING_POINT_EQUALITY" />
   </Match>
   <Match>
-    <Class name="org.apache.commons.math3.analysis.solvers.MullerSolver2" />
+    <Class name="org.apache.commons.math4.analysis.solvers.MullerSolver2" />
     <Or>
       <Method name="doSolve"  params="" returns="double" />
     </Or>
     <Bug pattern="FE_FLOATING_POINT_EQUALITY" />
   </Match>
   <Match>
-    <Class name="org.apache.commons.math3.linear.EigenDecomposition" />
+    <Class name="org.apache.commons.math4.linear.EigenDecomposition" />
     <Method name="findEigenVectors" params="double[][]" returns="void" />
     <Bug pattern="FE_FLOATING_POINT_EQUALITY" />
   </Match>
   <Match>
     <Or>
-      <Class name="org.apache.commons.math3.optim.nonlinear.scalar.noderiv.BOBYQAOptimizer" />
-      <Class name="org.apache.commons.math3.optimization.direct.BOBYQAOptimizer" />
+      <Class name="org.apache.commons.math4.optim.nonlinear.scalar.noderiv.BOBYQAOptimizer" />
+      <Class name="org.apache.commons.math4.optimization.direct.BOBYQAOptimizer" />
     </Or>
     <Method name="altmov" params="int,double" returns="double[]" />
     <Bug pattern="FE_FLOATING_POINT_EQUALITY" />
   </Match>
   <Match>
-    <Class name="org.apache.commons.math3.optim.nonlinear.scalar.noderiv.CMAESOptimizer" />
-    <Method name="doOptimize" params="" returns="org.apache.commons.math3.optim.PointValuePair" />
+    <Class name="org.apache.commons.math4.optim.nonlinear.scalar.noderiv.CMAESOptimizer" />
+    <Method name="doOptimize" params="" returns="org.apache.commons.math4.optim.PointValuePair" />
     <Bug pattern="FE_FLOATING_POINT_EQUALITY" />
   </Match>
   
   <!-- The following equality test is intentional and needed for semantic purposes -->
   <Match>
     <Or>
-      <Class name="org.apache.commons.math3.geometry.euclidean.oned.Vector1D" />
-      <Class name="org.apache.commons.math3.geometry.euclidean.twod.Vector2D" />
-      <Class name="org.apache.commons.math3.geometry.euclidean.threed.Vector3D" />
+      <Class name="org.apache.commons.math4.geometry.euclidean.oned.Vector1D" />
+      <Class name="org.apache.commons.math4.geometry.euclidean.twod.Vector2D" />
+      <Class name="org.apache.commons.math4.geometry.euclidean.threed.Vector3D" />
     </Or>
     <Method name="equals" params="java.lang.Object" returns="boolean" />
     <Bug pattern="FE_FLOATING_POINT_EQUALITY" />
   </Match>
   <Match>
-    <Class name="org.apache.commons.math3.optimization.linear.LinearConstraint" />
+    <Class name="org.apache.commons.math4.optimization.linear.LinearConstraint" />
     <Method name="equals" params="java.lang.Object" returns="boolean" />
     <Bug pattern="FE_FLOATING_POINT_EQUALITY" />
   </Match>
   <Match>
-    <Class name="org.apache.commons.math3.optim.linear.LinearConstraint" />
+    <Class name="org.apache.commons.math4.optim.linear.LinearConstraint" />
     <Method name="equals" params="java.lang.Object" returns="boolean" />
     <Bug pattern="FE_FLOATING_POINT_EQUALITY" />
   </Match>
 
   <!-- The following equality test is intentional and needed for rounding purposes -->
   <Match>
-    <Class name="org.apache.commons.math3.util.Precision" />
+    <Class name="org.apache.commons.math4.util.Precision" />
     <Method name="roundUnscaled" params="double,double,int" returns="double" />
     <Bug pattern="FE_FLOATING_POINT_EQUALITY" />
   </Match>
 
   <!-- The following equality test is intentional for division protection -->
   <Match>
-    <Class name="org.apache.commons.math3.analysis.interpolation.LoessInterpolator" />
+    <Class name="org.apache.commons.math4.analysis.interpolation.LoessInterpolator" />
     <Method name="smooth" params="double[],double[]" returns="double[]" />
     <Bug pattern="FE_FLOATING_POINT_EQUALITY" />
   </Match>
 
   <!-- The following equality test is intentional for infinity detection -->
   <Match>
-    <Class name="org.apache.commons.math3.util.FastMath" />
+    <Class name="org.apache.commons.math4.util.FastMath" />
     <Method name="atan2" params="double,double" returns="double" />
     <Bug pattern="FE_FLOATING_POINT_EQUALITY" />
   </Match>
@@ -134,8 +134,8 @@
    -->
   <Match>
     <Or>
-      <Class name="org.apache.commons.math3.optim.nonlinear.scalar.noderiv.BOBYQAOptimizer" />
-      <Class name="org.apache.commons.math3.optimization.direct.BOBYQAOptimizer" />
+      <Class name="org.apache.commons.math4.optim.nonlinear.scalar.noderiv.BOBYQAOptimizer" />
+      <Class name="org.apache.commons.math4.optimization.direct.BOBYQAOptimizer" />
     </Or>
     <Or>
       <Method name="bobyqb" params="double[],double[]" returns="double" />
@@ -148,7 +148,7 @@
        (to be removed in 4.0)
     -->
   <Match>
-    <Class name="org.apache.commons.math3.optimization.general.AbstractLeastSquaresOptimizer" />
+    <Class name="org.apache.commons.math4.optimization.general.AbstractLeastSquaresOptimizer" />
     <Or>
       <Field name="weightedResidualJacobian" />
       <Field name="weightedResiduals" />
@@ -158,54 +158,54 @@
 
   <!-- Spurious: Findbugs confused by final local variables -->
   <Match>
-    <Class name="org.apache.commons.math3.util.FastMath" />
+    <Class name="org.apache.commons.math4.util.FastMath" />
     <Method name="atan" params="double,double,boolean" returns="double" />
     <Bug pattern="DLS_DEAD_LOCAL_STORE" />
   </Match>
 
   <!-- the following expositions of internal representation are intentional and documented -->
   <Match>
-    <Class name="org.apache.commons.math3.stat.regression.RegressionResults"/>
+    <Class name="org.apache.commons.math4.stat.regression.RegressionResults"/>
     <Method name="&lt;init>" params="double[],double[][],boolean,long,int,double,double,double,boolean,boolean" returns="void" />
     <Bug pattern="EI_EXPOSE_REP2" />
   </Match>
   <Match>
-    <Class name="org.apache.commons.math3.stat.descriptive.AbstractUnivariateStatistic"/>
+    <Class name="org.apache.commons.math4.stat.descriptive.AbstractUnivariateStatistic"/>
     <Method name="getDataRef" params="" returns="double[]" />
     <Bug pattern="EI_EXPOSE_REP" />
   </Match>
   <Match>
-    <Class name="org.apache.commons.math3.optimization.PointValuePair"/>
+    <Class name="org.apache.commons.math4.optimization.PointValuePair"/>
     <Method name="getPointRef" params="" returns="double[]" />
     <Bug pattern="EI_EXPOSE_REP" />
   </Match>
   <Match>
-    <Class name="org.apache.commons.math3.optim.PointValuePair"/>
+    <Class name="org.apache.commons.math4.optim.PointValuePair"/>
     <Method name="getPointRef" params="" returns="double[]" />
     <Bug pattern="EI_EXPOSE_REP" />
   </Match>
   <Match>
-    <Class name="org.apache.commons.math3.optimization.PointValuePair"/>
+    <Class name="org.apache.commons.math4.optimization.PointValuePair"/>
     <Method name="&lt;init>" params="double[],double,boolean" returns="void" />
     <Bug pattern="EI_EXPOSE_REP2" />
   </Match>
   <Match>
-    <Class name="org.apache.commons.math3.optim.PointValuePair"/>
+    <Class name="org.apache.commons.math4.optim.PointValuePair"/>
     <Method name="&lt;init>" params="double[],double,boolean" returns="void" />
     <Bug pattern="EI_EXPOSE_REP2" />
   </Match>
   <!-- Serialization is handled by an internal class -->
   <Match>
     <Or>
-      <Class name="org.apache.commons.math3.optim.PointValuePair"/>
-      <Class name="org.apache.commons.math3.optim.PointVectorValuePair"/>
-      <Class name="org.apache.commons.math3.optimization.PointValuePair"/>
-      <Class name="org.apache.commons.math3.optimization.PointVectorValuePair"/>      
+      <Class name="org.apache.commons.math4.optim.PointValuePair"/>
+      <Class name="org.apache.commons.math4.optim.PointVectorValuePair"/>
+      <Class name="org.apache.commons.math4.optimization.PointValuePair"/>
+      <Class name="org.apache.commons.math4.optimization.PointVectorValuePair"/>      
     </Or>
     <Bug pattern="SE_NO_SUITABLE_CONSTRUCTOR" />
   </Match>
   <Match>
-    <Class name="org.apache.commons.math3.optimization.PointVectorValuePair"/>
+    <Class name="org.apache.commons.math4.optimization.PointVectorValuePair"/>
     <Or>
       <Method name="getPointRef" params="" returns="double[]" />
       <Method name="getValueRef" params="" returns="double[]" />
@@ -213,7 +213,7 @@
     <Bug pattern="EI_EXPOSE_REP" />
   </Match>
   <Match>
-    <Class name="org.apache.commons.math3.optim.PointVectorValuePair"/>
+    <Class name="org.apache.commons.math4.optim.PointVectorValuePair"/>
     <Or>
       <Method name="getPointRef" params="" returns="double[]" />
       <Method name="getValueRef" params="" returns="double[]" />
@@ -221,22 +221,22 @@
     <Bug pattern="EI_EXPOSE_REP" />
   </Match>
   <Match>
-    <Class name="org.apache.commons.math3.optimization.PointVectorValuePair"/>
+    <Class name="org.apache.commons.math4.optimization.PointVectorValuePair"/>
     <Method name="&lt;init>" params="double[],double[][],boolean" returns="void" />
     <Bug pattern="EI_EXPOSE_REP2" />
   </Match>
   <Match>
-    <Class name="org.apache.commons.math3.optim.PointVectorValuePair"/>
+    <Class name="org.apache.commons.math4.optim.PointVectorValuePair"/>
     <Method name="&lt;init>" params="double[],double[][],boolean" returns="void" />
     <Bug pattern="EI_EXPOSE_REP2" />
   </Match>
   <Match>
-    <Class name="org.apache.commons.math3.ode.sampling.DummyStepInterpolator"/>
+    <Class name="org.apache.commons.math4.ode.sampling.DummyStepInterpolator"/>
     <Method name="&lt;init>" params="double[],double[],boolean" returns="void" />
     <Bug pattern="EI_EXPOSE_REP2" />
   </Match>
   <Match>
-    <Class name="org.apache.commons.math3.ode.sampling.AbstractStepInterpolator"/>
+    <Class name="org.apache.commons.math4.ode.sampling.AbstractStepInterpolator"/>
     <Or>
       <Method name="getInterpolatedState" params="" returns="double[]" />
       <Method name="getInterpolatedDerivatives" params="" returns="double[]" />
@@ -244,47 +244,47 @@
     <Bug pattern="EI_EXPOSE_REP" />
   </Match>
   <Match>
-    <Class name="org.apache.commons.math3.ode.sampling.NordsieckStepInterpolator"/>
-    <Method name="reinitialize" params="double,double,double[],org.apache.commons.math3.linear.Array2DRowRealMatrix" returns="void" />
+    <Class name="org.apache.commons.math4.ode.sampling.NordsieckStepInterpolator"/>
+    <Method name="reinitialize" params="double,double,double[],org.apache.commons.math4.linear.Array2DRowRealMatrix" returns="void" />
     <Bug pattern="EI_EXPOSE_REP2" />
   </Match>
   <Match>
-    <Class name="org.apache.commons.math3.ode.sampling.NordsieckStepInterpolator"/>
+    <Class name="org.apache.commons.math4.ode.sampling.NordsieckStepInterpolator"/>
     <Method name="getInterpolatedStateVariation" params="" returns="double[]" />
     <Bug pattern="EI_EXPOSE_REP" />
   </Match>
   <Match>
-    <Class name="org.apache.commons.math3.linear.Array2DRowRealMatrix"/>
+    <Class name="org.apache.commons.math4.linear.Array2DRowRealMatrix"/>
     <Method name="&lt;init>" params="double[][],boolean" returns="void" />
     <Bug pattern="EI_EXPOSE_REP2" />
   </Match>
   <Match>
-    <Class name="org.apache.commons.math3.linear.Array2DRowRealMatrix"/>
+    <Class name="org.apache.commons.math4.linear.Array2DRowRealMatrix"/>
     <Method name="getDataRef" params="" returns="double[][]" />
     <Bug pattern="EI_EXPOSE_REP" />
   </Match>
   <Match>
-    <Class name="org.apache.commons.math3.linear.BlockFieldMatrix"/>
-    <Method name="&lt;init>" params="int,int,org.apache.commons.math3.FieldElement[][],boolean" returns="void" />
+    <Class name="org.apache.commons.math4.linear.BlockFieldMatrix"/>
+    <Method name="&lt;init>" params="int,int,org.apache.commons.math4.FieldElement[][],boolean" returns="void" />
     <Bug pattern="EI_EXPOSE_REP2" />
   </Match>
   <Match>
-    <Class name="org.apache.commons.math3.linear.Array2DRowFieldMatrix"/>
-    <Method name="&lt;init>" params="org.apache.commons.math3.Field,org.apache.commons.math3.FieldElement[][],boolean" returns="void" />
+    <Class name="org.apache.commons.math4.linear.Array2DRowFieldMatrix"/>
+    <Method name="&lt;init>" params="org.apache.commons.math4.Field,org.apache.commons.math4.FieldElement[][],boolean" returns="void" />
     <Bug pattern="EI_EXPOSE_REP2" />
   </Match>
   <Match>
-    <Class name="org.apache.commons.math3.linear.Array2DRowFieldMatrix"/>
-    <Method name="getDataRef" params="" returns="org.apache.commons.math3.FieldElement[][]" />
+    <Class name="org.apache.commons.math4.linear.Array2DRowFieldMatrix"/>
+    <Method name="getDataRef" params="" returns="org.apache.commons.math4.FieldElement[][]" />
     <Bug pattern="EI_EXPOSE_REP" />
   </Match>
   <Match>
-    <Class name="org.apache.commons.math3.linear.BlockRealMatrix"/>
+    <Class name="org.apache.commons.math4.linear.BlockRealMatrix"/>
     <Method name="&lt;init>" params="int,int,double[][],boolean" returns="void" />
     <Bug pattern="EI_EXPOSE_REP2" />
   </Match>
   <Match>
-    <Class name="org.apache.commons.math3.util.ResizableDoubleArray"/>
+    <Class name="org.apache.commons.math4.util.ResizableDoubleArray"/>
     <Or>
       <Method name="getValues"         params="" returns="double[]" />
       <Method name="getInternalValues" params="" returns="double[]" />
@@ -292,47 +292,47 @@
     <Bug pattern="EI_EXPOSE_REP" />
   </Match>
   <Match>
-    <Class name="org.apache.commons.math3.linear.ArrayRealVector"/>
+    <Class name="org.apache.commons.math4.linear.ArrayRealVector"/>
     <Method name="getDataRef" params="" returns="double[]" />
     <Bug pattern="EI_EXPOSE_REP" />
   </Match>
   <Match>
-    <Class name="org.apache.commons.math3.linear.ArrayFieldVector"/>
-    <Method name="getDataRef" params="" returns="org.apache.commons.math3.FieldElement[]" />
+    <Class name="org.apache.commons.math4.linear.ArrayFieldVector"/>
+    <Method name="getDataRef" params="" returns="org.apache.commons.math4.FieldElement[]" />
     <Bug pattern="EI_EXPOSE_REP" />
   </Match>
   <Match>
-    <Class name="org.apache.commons.math3.linear.DiagonalMatrix"/>
+    <Class name="org.apache.commons.math4.linear.DiagonalMatrix"/>
     <Method name="getDataRef" params="" returns="double[]" />
     <Bug pattern="EI_EXPOSE_REP" />
   </Match>
   <!-- The equals method for RealVector intentionally throws an exception -->
   <Match>
-    <Class name="org.apache.commons.math3.linear.RealVector"/>
+    <Class name="org.apache.commons.math4.linear.RealVector"/>
     <Bug pattern="EQ_UNUSUAL" />
   </Match>
   <Match>
-    <Class name="org.apache.commons.math3.stat.clustering.EuclideanIntegerPoint"/>
+    <Class name="org.apache.commons.math4.stat.clustering.EuclideanIntegerPoint"/>
     <Method name="&lt;init>" params="int[]" returns="void" />
     <Bug pattern="EI_EXPOSE_REP2" />
   </Match>
   <Match>
-    <Class name="org.apache.commons.math3.stat.clustering.EuclideanIntegerPoint"/>
+    <Class name="org.apache.commons.math4.stat.clustering.EuclideanIntegerPoint"/>
     <Method name="getPoint" params="" returns="int[]" />
     <Bug pattern="EI_EXPOSE_REP" />
   </Match>
   <Match>
     <Or>
-      <Class name="org.apache.commons.math3.stat.clustering.EuclideanDoublePoint"/>
-      <Class name="org.apache.commons.math3.ml.clustering.DoublePoint"/>      
+      <Class name="org.apache.commons.math4.stat.clustering.EuclideanDoublePoint"/>
+      <Class name="org.apache.commons.math4.ml.clustering.DoublePoint"/>      
     </Or>
     <Method name="&lt;init>" params="double[]" returns="void" />
     <Bug pattern="EI_EXPOSE_REP2" />
   </Match>
   <Match>
     <Or>
-      <Class name="org.apache.commons.math3.stat.clustering.EuclideanDoublePoint"/>
-      <Class name="org.apache.commons.math3.ml.clustering.DoublePoint"/>      
+      <Class name="org.apache.commons.math4.stat.clustering.EuclideanDoublePoint"/>
+      <Class name="org.apache.commons.math4.ml.clustering.DoublePoint"/>      
     </Or>
     <Method name="getPoint" params="" returns="double[]" />
     <Bug pattern="EI_EXPOSE_REP" />
@@ -340,44 +340,44 @@
 
   <!-- The following cases are intentional unit tests for null parameters -->
   <Match>
-    <Class name="org.apache.commons.math3.stat.StatUtilsTest" />
+    <Class name="org.apache.commons.math4.stat.StatUtilsTest" />
     <Method name="testPercentile" params="" returns="void" />
     <Bug pattern="NP_NULL_PARAM_DEREF_NONVIRTUAL" />
   </Match>
   <Match>
-    <Class name="org.apache.commons.math3.analysis.UnivariateRealSolverFactoryImplTest" />
+    <Class name="org.apache.commons.math4.analysis.UnivariateRealSolverFactoryImplTest" />
     <Method name="testNewNewtonSolverNull" params="" returns="void" />
     <Bug pattern="NP_NULL_PARAM_DEREF_ALL_TARGETS_DANGEROUS" />
   </Match>
   <Match>
-    <Class name="org.apache.commons.math3.stat.regression.OLSMultipleLinearRegressionTest" />
+    <Class name="org.apache.commons.math4.stat.regression.OLSMultipleLinearRegressionTest" />
     <Method name="cannotAddNullYSampleData" params="" returns="void" />
     <Bug pattern="NP_NULL_PARAM_DEREF_ALL_TARGETS_DANGEROUS" />
   </Match>
   
   <!-- IntDoublePair intentionally implements Comparable inconsistently with equals -->
   <Match>
-    <Class name="org.apache.commons.math3.stat.ranking.NaturalRanking$IntDoublePair" />
+    <Class name="org.apache.commons.math4.stat.ranking.NaturalRanking$IntDoublePair" />
     <Bug pattern="EQ_COMPARETO_USE_OBJECT_EQUALS" />
   </Match>
 
   <!-- False positive warning from findbugs, the integer division result cast to double is correct here -->
   <Match>
-    <Class name="org.apache.commons.math3.stat.inference.MannWhitneyUTest" />
+    <Class name="org.apache.commons.math4.stat.inference.MannWhitneyUTest" />
     <Method name="mannWhitneyU" params="double[],double[]" returns="double" />
     <Bug pattern="ICAST_IDIV_CAST_TO_DOUBLE" />
   </Match>
 
   <!-- The following switch fall-through is intended. -->
   <Match>
-    <Class name="org.apache.commons.math3.ml.neuralnet.twod.NeuronSquareMesh2D" />
+    <Class name="org.apache.commons.math4.ml.neuralnet.twod.NeuronSquareMesh2D" />
     <Method name="createLinks" />
     <Bug pattern="SF_SWITCH_FALLTHROUGH" />
   </Match>
   
   <!-- Integer division results cast to double are intentional. -->
   <Match>
-    <Class name="org.apache.commons.math3.special.BesselJ" />
+    <Class name="org.apache.commons.math4.special.BesselJ" />
     <Method name="rjBesl" />
     <Bug pattern="ICAST_IDIV_CAST_TO_DOUBLE" />
   </Match>

http://git-wip-us.apache.org/repos/asf/commons-math/blob/e4e1ac23/pom.xml
----------------------------------------------------------------------
diff --git a/pom.xml b/pom.xml
index fbc5508..a36e84e 100644
--- a/pom.xml
+++ b/pom.xml
@@ -23,8 +23,8 @@
   </parent>
   <modelVersion>4.0.0</modelVersion>
   <groupId>org.apache.commons</groupId>
-  <artifactId>commons-math3</artifactId>
-  <version>3.5-SNAPSHOT</version>
+  <artifactId>commons-math4</artifactId>
+  <version>4.0-SNAPSHOT</version>
   <name>Apache Commons Math</name>
 
   <inceptionYear>2003</inceptionYear>
@@ -359,6 +359,8 @@
     <!-- Do not change: "math" is the name of the component even if the
          name of the base package evolves with major release numbers
          (see "commons.osgi.symbolicName", below). -->
+    <!-- TODO: when releasing 4.0, the properties below need to be updated, and
+         the 3.x release artifacts need to be put int commons.release.3  -->
     <commons.componentid>math</commons.componentid>
     <!-- This value must reflect the current name of the base package. -->
     <commons.osgi.symbolicName>org.apache.commons.math3</commons.osgi.symbolicName>
@@ -484,7 +486,7 @@
                     <attribute name="X-Compile-Target-JDK" value="${maven.compiler.target}" />
                   </manifest>
                   <fileset dir="${project.build.directory}/test-classes"
-                           includes="org/apache/commons/math3/PerfTestUtils*" />
+                           includes="org/apache/commons/math4/PerfTestUtils*" />
                 </jar>
               </target>
             </configuration>
@@ -494,7 +496,7 @@
           </execution>
         </executions>
       </plugin>
-      <!--  Attaches the commons-math3 tools JAR to the Maven lifecycle
+      <!--  Attaches the commons-math4 tools JAR to the Maven lifecycle
             to ensure they will be signed and deployed as normal -->
       <plugin>
         <groupId>org.codehaus.mojo</groupId>
@@ -589,21 +591,21 @@
 
             <!-- the following are test data files with specific syntax that cannot include
                  Apache header (and the contained data is public, it is not owned by Apache) -->
-            <exclude>src/test/resources/org/apache/commons/math3/random/testData.txt</exclude>
-            <exclude>src/test/resources/org/apache/commons/math3/random/emptyFile.txt</exclude>
-            <exclude>src/test/resources/org/apache/commons/math3/stat/data/PiDigits.txt</exclude>
-            <exclude>src/test/resources/org/apache/commons/math3/stat/data/NumAcc3.txt</exclude>
-            <exclude>src/test/resources/org/apache/commons/math3/stat/data/Lew.txt</exclude>
-            <exclude>src/test/resources/org/apache/commons/math3/stat/data/NumAcc2.txt</exclude>
-            <exclude>src/test/resources/org/apache/commons/math3/stat/data/NumAcc1.txt</exclude>
-            <exclude>src/test/resources/org/apache/commons/math3/stat/data/Lottery.txt</exclude>
-            <exclude>src/test/resources/org/apache/commons/math3/stat/data/NumAcc4.txt</exclude>
-            <exclude>src/test/resources/org/apache/commons/math3/stat/data/Michelso.txt</exclude>
-            <exclude>src/test/resources/org/apache/commons/math3/stat/data/Mavro.txt</exclude>
+            <exclude>src/test/resources/org/apache/commons/math4/random/testData.txt</exclude>
+            <exclude>src/test/resources/org/apache/commons/math4/random/emptyFile.txt</exclude>
+            <exclude>src/test/resources/org/apache/commons/math4/stat/data/PiDigits.txt</exclude>
+            <exclude>src/test/resources/org/apache/commons/math4/stat/data/NumAcc3.txt</exclude>
+            <exclude>src/test/resources/org/apache/commons/math4/stat/data/Lew.txt</exclude>
+            <exclude>src/test/resources/org/apache/commons/math4/stat/data/NumAcc2.txt</exclude>
+            <exclude>src/test/resources/org/apache/commons/math4/stat/data/NumAcc1.txt</exclude>
+            <exclude>src/test/resources/org/apache/commons/math4/stat/data/Lottery.txt</exclude>
+            <exclude>src/test/resources/org/apache/commons/math4/stat/data/NumAcc4.txt</exclude>
+            <exclude>src/test/resources/org/apache/commons/math4/stat/data/Michelso.txt</exclude>
+            <exclude>src/test/resources/org/apache/commons/math4/stat/data/Mavro.txt</exclude>
 
             <!-- direction numbers for Sobol generation from Frances Y. Kuo and Stephen Joe,
                  available under a BSD-style license (see NOTICE.txt and LICENSE.txt) -->
-            <exclude>src/main/resources/assets/org/apache/commons/math3/random/new-joe-kuo-6.1000</exclude>
+            <exclude>src/main/resources/assets/org/apache/commons/math4/random/new-joe-kuo-6.1000</exclude>
 
             <!-- text file explaining reference to a public domain image -->
             <exclude>src/userguide/resources/references.txt</exclude>

http://git-wip-us.apache.org/repos/asf/commons-math/blob/e4e1ac23/src/changes/changes.xml
----------------------------------------------------------------------
diff --git a/src/changes/changes.xml b/src/changes/changes.xml
index 3309edf..621aab5 100644
--- a/src/changes/changes.xml
+++ b/src/changes/changes.xml
@@ -53,7 +53,7 @@ If the output is not quite correct, check for invisible trailing spaces!
     <release version="TBD" date="TBD" description="TBD">
     </release>
 
-    <release version="3.5" date="2015-01-11" description="">
+    <release version="4.0" date="XXXX-XX-XX" description="">
       <action dev="sebb" type="add" issue="MATH-1198">
         Simplified "FastMath#exp(double)" in order to avoid a potential
         Java 1.5 JIT bug when calling with negative infinity as argument.

http://git-wip-us.apache.org/repos/asf/commons-math/blob/e4e1ac23/src/main/java/org/apache/commons/math4/Field.java
----------------------------------------------------------------------
diff --git a/src/main/java/org/apache/commons/math4/Field.java b/src/main/java/org/apache/commons/math4/Field.java
index 618536c..ecc9342 100644
--- a/src/main/java/org/apache/commons/math4/Field.java
+++ b/src/main/java/org/apache/commons/math4/Field.java
@@ -14,7 +14,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-package org.apache.commons.math3;
+package org.apache.commons.math4;
 
 /**
  * Interface representing a <a href="http://mathworld.wolfram.com/Field.html">field</a>.

http://git-wip-us.apache.org/repos/asf/commons-math/blob/e4e1ac23/src/main/java/org/apache/commons/math4/FieldElement.java
----------------------------------------------------------------------
diff --git a/src/main/java/org/apache/commons/math4/FieldElement.java b/src/main/java/org/apache/commons/math4/FieldElement.java
index 8a7533a..7732c00 100644
--- a/src/main/java/org/apache/commons/math4/FieldElement.java
+++ b/src/main/java/org/apache/commons/math4/FieldElement.java
@@ -14,10 +14,10 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-package org.apache.commons.math3;
+package org.apache.commons.math4;
 
-import org.apache.commons.math3.exception.MathArithmeticException;
-import org.apache.commons.math3.exception.NullArgumentException;
+import org.apache.commons.math4.exception.MathArithmeticException;
+import org.apache.commons.math4.exception.NullArgumentException;
 
 
 /**

http://git-wip-us.apache.org/repos/asf/commons-math/blob/e4e1ac23/src/main/java/org/apache/commons/math4/RealFieldElement.java
----------------------------------------------------------------------
diff --git a/src/main/java/org/apache/commons/math4/RealFieldElement.java b/src/main/java/org/apache/commons/math4/RealFieldElement.java
index 0e54ba1..aa171f9 100644
--- a/src/main/java/org/apache/commons/math4/RealFieldElement.java
+++ b/src/main/java/org/apache/commons/math4/RealFieldElement.java
@@ -14,9 +14,9 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-package org.apache.commons.math3;
+package org.apache.commons.math4;
 
-import org.apache.commons.math3.exception.DimensionMismatchException;
+import org.apache.commons.math4.exception.DimensionMismatchException;
 
 /**
  * Interface representing a <a href="http://mathworld.wolfram.com/RealNumber.html">real</a>

http://git-wip-us.apache.org/repos/asf/commons-math/blob/e4e1ac23/src/main/java/org/apache/commons/math4/analysis/BivariateFunction.java
----------------------------------------------------------------------
diff --git a/src/main/java/org/apache/commons/math4/analysis/BivariateFunction.java b/src/main/java/org/apache/commons/math4/analysis/BivariateFunction.java
index d8aaca5..49ca210 100644
--- a/src/main/java/org/apache/commons/math4/analysis/BivariateFunction.java
+++ b/src/main/java/org/apache/commons/math4/analysis/BivariateFunction.java
@@ -15,7 +15,7 @@
  * limitations under the License.
  */
 
-package org.apache.commons.math3.analysis;
+package org.apache.commons.math4.analysis;
 
 /**
  * An interface representing a bivariate real function.

http://git-wip-us.apache.org/repos/asf/commons-math/blob/e4e1ac23/src/main/java/org/apache/commons/math4/analysis/DifferentiableMultivariateFunction.java
----------------------------------------------------------------------
diff --git a/src/main/java/org/apache/commons/math4/analysis/DifferentiableMultivariateFunction.java b/src/main/java/org/apache/commons/math4/analysis/DifferentiableMultivariateFunction.java
index c7fad48..8ca1ab9 100644
--- a/src/main/java/org/apache/commons/math4/analysis/DifferentiableMultivariateFunction.java
+++ b/src/main/java/org/apache/commons/math4/analysis/DifferentiableMultivariateFunction.java
@@ -15,13 +15,13 @@
  * limitations under the License.
  */
 
-package org.apache.commons.math3.analysis;
+package org.apache.commons.math4.analysis;
 
 /**
  * Extension of {@link MultivariateFunction} representing a differentiable
  * multivariate real function.
  * @since 2.0
- * @deprecated as of 3.1 replaced by {@link org.apache.commons.math3.analysis.differentiation.MultivariateDifferentiableFunction}
+ * @deprecated as of 3.1 replaced by {@link org.apache.commons.math4.analysis.differentiation.MultivariateDifferentiableFunction}
  */
 @Deprecated
 public interface DifferentiableMultivariateFunction extends MultivariateFunction {

http://git-wip-us.apache.org/repos/asf/commons-math/blob/e4e1ac23/src/main/java/org/apache/commons/math4/analysis/DifferentiableMultivariateVectorFunction.java
----------------------------------------------------------------------
diff --git a/src/main/java/org/apache/commons/math4/analysis/DifferentiableMultivariateVectorFunction.java b/src/main/java/org/apache/commons/math4/analysis/DifferentiableMultivariateVectorFunction.java
index 5bfa97b..7cc7688 100644
--- a/src/main/java/org/apache/commons/math4/analysis/DifferentiableMultivariateVectorFunction.java
+++ b/src/main/java/org/apache/commons/math4/analysis/DifferentiableMultivariateVectorFunction.java
@@ -15,13 +15,13 @@
  * limitations under the License.
  */
 
-package org.apache.commons.math3.analysis;
+package org.apache.commons.math4.analysis;
 
 /**
  * Extension of {@link MultivariateVectorFunction} representing a differentiable
  * multivariate vectorial function.
  * @since 2.0
- * @deprecated as of 3.1 replaced by {@link org.apache.commons.math3.analysis.differentiation.MultivariateDifferentiableVectorFunction}
+ * @deprecated as of 3.1 replaced by {@link org.apache.commons.math4.analysis.differentiation.MultivariateDifferentiableVectorFunction}
  */
 @Deprecated
 public interface DifferentiableMultivariateVectorFunction

http://git-wip-us.apache.org/repos/asf/commons-math/blob/e4e1ac23/src/main/java/org/apache/commons/math4/analysis/DifferentiableUnivariateFunction.java
----------------------------------------------------------------------
diff --git a/src/main/java/org/apache/commons/math4/analysis/DifferentiableUnivariateFunction.java b/src/main/java/org/apache/commons/math4/analysis/DifferentiableUnivariateFunction.java
index db0314c..a59f23f 100644
--- a/src/main/java/org/apache/commons/math4/analysis/DifferentiableUnivariateFunction.java
+++ b/src/main/java/org/apache/commons/math4/analysis/DifferentiableUnivariateFunction.java
@@ -14,12 +14,12 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-package org.apache.commons.math3.analysis;
+package org.apache.commons.math4.analysis;
 
 /**
  * Extension of {@link UnivariateFunction} representing a differentiable univariate real function.
  *
- * @deprecated as of 3.1 replaced by {@link org.apache.commons.math3.analysis.differentiation.UnivariateDifferentiableFunction}
+ * @deprecated as of 3.1 replaced by {@link org.apache.commons.math4.analysis.differentiation.UnivariateDifferentiableFunction}
  */
 @Deprecated
 public interface DifferentiableUnivariateFunction

http://git-wip-us.apache.org/repos/asf/commons-math/blob/e4e1ac23/src/main/java/org/apache/commons/math4/analysis/DifferentiableUnivariateMatrixFunction.java
----------------------------------------------------------------------
diff --git a/src/main/java/org/apache/commons/math4/analysis/DifferentiableUnivariateMatrixFunction.java b/src/main/java/org/apache/commons/math4/analysis/DifferentiableUnivariateMatrixFunction.java
index 375fcfd..7a6c688 100644
--- a/src/main/java/org/apache/commons/math4/analysis/DifferentiableUnivariateMatrixFunction.java
+++ b/src/main/java/org/apache/commons/math4/analysis/DifferentiableUnivariateMatrixFunction.java
@@ -14,13 +14,13 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-package org.apache.commons.math3.analysis;
+package org.apache.commons.math4.analysis;
 
 /**
  * Extension of {@link UnivariateMatrixFunction} representing a differentiable univariate matrix function.
  *
  * @since 2.0
- * @deprecated as of 3.1 replaced by  {@link org.apache.commons.math3.analysis.differentiation.UnivariateDifferentiableMatrixFunction}
+ * @deprecated as of 3.1 replaced by  {@link org.apache.commons.math4.analysis.differentiation.UnivariateDifferentiableMatrixFunction}
  */
 @Deprecated
 public interface DifferentiableUnivariateMatrixFunction

http://git-wip-us.apache.org/repos/asf/commons-math/blob/e4e1ac23/src/main/java/org/apache/commons/math4/analysis/DifferentiableUnivariateVectorFunction.java
----------------------------------------------------------------------
diff --git a/src/main/java/org/apache/commons/math4/analysis/DifferentiableUnivariateVectorFunction.java b/src/main/java/org/apache/commons/math4/analysis/DifferentiableUnivariateVectorFunction.java
index b5ab198..9b9a371 100644
--- a/src/main/java/org/apache/commons/math4/analysis/DifferentiableUnivariateVectorFunction.java
+++ b/src/main/java/org/apache/commons/math4/analysis/DifferentiableUnivariateVectorFunction.java
@@ -14,13 +14,13 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-package org.apache.commons.math3.analysis;
+package org.apache.commons.math4.analysis;
 
 /**
  * Extension of {@link UnivariateVectorFunction} representing a differentiable univariate vectorial function.
  *
  * @since 2.0
- * @deprecated as of 3.1 replaced by {@link org.apache.commons.math3.analysis.differentiation.UnivariateDifferentiableVectorFunction}
+ * @deprecated as of 3.1 replaced by {@link org.apache.commons.math4.analysis.differentiation.UnivariateDifferentiableVectorFunction}
  */
 @Deprecated
 public interface DifferentiableUnivariateVectorFunction

http://git-wip-us.apache.org/repos/asf/commons-math/blob/e4e1ac23/src/main/java/org/apache/commons/math4/analysis/FunctionUtils.java
----------------------------------------------------------------------
diff --git a/src/main/java/org/apache/commons/math4/analysis/FunctionUtils.java b/src/main/java/org/apache/commons/math4/analysis/FunctionUtils.java
index 2bc1c48..ecb816d 100644
--- a/src/main/java/org/apache/commons/math4/analysis/FunctionUtils.java
+++ b/src/main/java/org/apache/commons/math4/analysis/FunctionUtils.java
@@ -15,17 +15,17 @@
  * limitations under the License.
  */
 
-package org.apache.commons.math3.analysis;
-
-import org.apache.commons.math3.analysis.differentiation.DerivativeStructure;
-import org.apache.commons.math3.analysis.differentiation.MultivariateDifferentiableFunction;
-import org.apache.commons.math3.analysis.differentiation.MultivariateDifferentiableVectorFunction;
-import org.apache.commons.math3.analysis.differentiation.UnivariateDifferentiableFunction;
-import org.apache.commons.math3.analysis.function.Identity;
-import org.apache.commons.math3.exception.DimensionMismatchException;
-import org.apache.commons.math3.exception.NotStrictlyPositiveException;
-import org.apache.commons.math3.exception.NumberIsTooLargeException;
-import org.apache.commons.math3.exception.util.LocalizedFormats;
+package org.apache.commons.math4.analysis;
+
+import org.apache.commons.math4.analysis.differentiation.DerivativeStructure;
+import org.apache.commons.math4.analysis.differentiation.MultivariateDifferentiableFunction;
+import org.apache.commons.math4.analysis.differentiation.MultivariateDifferentiableVectorFunction;
+import org.apache.commons.math4.analysis.differentiation.UnivariateDifferentiableFunction;
+import org.apache.commons.math4.analysis.function.Identity;
+import org.apache.commons.math4.exception.DimensionMismatchException;
+import org.apache.commons.math4.exception.NotStrictlyPositiveException;
+import org.apache.commons.math4.exception.NumberIsTooLargeException;
+import org.apache.commons.math4.exception.util.LocalizedFormats;
 
 /**
  * Utilities for manipulating function objects.

http://git-wip-us.apache.org/repos/asf/commons-math/blob/e4e1ac23/src/main/java/org/apache/commons/math4/analysis/MultivariateFunction.java
----------------------------------------------------------------------
diff --git a/src/main/java/org/apache/commons/math4/analysis/MultivariateFunction.java b/src/main/java/org/apache/commons/math4/analysis/MultivariateFunction.java
index f86ba2a..e694cdc 100644
--- a/src/main/java/org/apache/commons/math4/analysis/MultivariateFunction.java
+++ b/src/main/java/org/apache/commons/math4/analysis/MultivariateFunction.java
@@ -15,7 +15,7 @@
  * limitations under the License.
  */
 
-package org.apache.commons.math3.analysis;
+package org.apache.commons.math4.analysis;
 
 /**
  * An interface representing a multivariate real function.
@@ -29,9 +29,9 @@ public interface MultivariateFunction {
      *
      * @param point Point at which the function must be evaluated.
      * @return the function value for the given point.
-     * @throws org.apache.commons.math3.exception.DimensionMismatchException
+     * @throws org.apache.commons.math4.exception.DimensionMismatchException
      * if the parameter's dimension is wrong for the function being evaluated.
-     * @throws  org.apache.commons.math3.exception.MathIllegalArgumentException
+     * @throws  org.apache.commons.math4.exception.MathIllegalArgumentException
      * when the activated method itself can ascertain that preconditions,
      * specified in the API expressed at the level of the activated method,
      * have been violated.  In the vast majority of cases where Commons Math

http://git-wip-us.apache.org/repos/asf/commons-math/blob/e4e1ac23/src/main/java/org/apache/commons/math4/analysis/MultivariateMatrixFunction.java
----------------------------------------------------------------------
diff --git a/src/main/java/org/apache/commons/math4/analysis/MultivariateMatrixFunction.java b/src/main/java/org/apache/commons/math4/analysis/MultivariateMatrixFunction.java
index f064904..1f136d7 100644
--- a/src/main/java/org/apache/commons/math4/analysis/MultivariateMatrixFunction.java
+++ b/src/main/java/org/apache/commons/math4/analysis/MultivariateMatrixFunction.java
@@ -15,7 +15,7 @@
  * limitations under the License.
  */
 
-package org.apache.commons.math3.analysis;
+package org.apache.commons.math4.analysis;
 
 /**
  * An interface representing a multivariate matrix function.

http://git-wip-us.apache.org/repos/asf/commons-math/blob/e4e1ac23/src/main/java/org/apache/commons/math4/analysis/MultivariateVectorFunction.java
----------------------------------------------------------------------
diff --git a/src/main/java/org/apache/commons/math4/analysis/MultivariateVectorFunction.java b/src/main/java/org/apache/commons/math4/analysis/MultivariateVectorFunction.java
index 26a69f2..14d62da 100644
--- a/src/main/java/org/apache/commons/math4/analysis/MultivariateVectorFunction.java
+++ b/src/main/java/org/apache/commons/math4/analysis/MultivariateVectorFunction.java
@@ -15,7 +15,7 @@
  * limitations under the License.
  */
 
-package org.apache.commons.math3.analysis;
+package org.apache.commons.math4.analysis;
 
 /**
  * An interface representing a multivariate vectorial function.

http://git-wip-us.apache.org/repos/asf/commons-math/blob/e4e1ac23/src/main/java/org/apache/commons/math4/analysis/ParametricUnivariateFunction.java
----------------------------------------------------------------------
diff --git a/src/main/java/org/apache/commons/math4/analysis/ParametricUnivariateFunction.java b/src/main/java/org/apache/commons/math4/analysis/ParametricUnivariateFunction.java
index 616b35d..86dc10b 100644
--- a/src/main/java/org/apache/commons/math4/analysis/ParametricUnivariateFunction.java
+++ b/src/main/java/org/apache/commons/math4/analysis/ParametricUnivariateFunction.java
@@ -15,7 +15,7 @@
  * limitations under the License.
  */
 
-package org.apache.commons.math3.analysis;
+package org.apache.commons.math4.analysis;
 
 /**
  * An interface representing a real function that depends on one independent

http://git-wip-us.apache.org/repos/asf/commons-math/blob/e4e1ac23/src/main/java/org/apache/commons/math4/analysis/TrivariateFunction.java
----------------------------------------------------------------------
diff --git a/src/main/java/org/apache/commons/math4/analysis/TrivariateFunction.java b/src/main/java/org/apache/commons/math4/analysis/TrivariateFunction.java
index 30ba767..b3934a5 100644
--- a/src/main/java/org/apache/commons/math4/analysis/TrivariateFunction.java
+++ b/src/main/java/org/apache/commons/math4/analysis/TrivariateFunction.java
@@ -15,7 +15,7 @@
  * limitations under the License.
  */
 
-package org.apache.commons.math3.analysis;
+package org.apache.commons.math4.analysis;
 
 /**
  * An interface representing a trivariate real function.

http://git-wip-us.apache.org/repos/asf/commons-math/blob/e4e1ac23/src/main/java/org/apache/commons/math4/analysis/UnivariateFunction.java
----------------------------------------------------------------------
diff --git a/src/main/java/org/apache/commons/math4/analysis/UnivariateFunction.java b/src/main/java/org/apache/commons/math4/analysis/UnivariateFunction.java
index e99f1f3..3073d09 100644
--- a/src/main/java/org/apache/commons/math4/analysis/UnivariateFunction.java
+++ b/src/main/java/org/apache/commons/math4/analysis/UnivariateFunction.java
@@ -14,7 +14,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-package org.apache.commons.math3.analysis;
+package org.apache.commons.math4.analysis;
 
 /**
  * An interface representing a univariate real function.

http://git-wip-us.apache.org/repos/asf/commons-math/blob/e4e1ac23/src/main/java/org/apache/commons/math4/analysis/UnivariateMatrixFunction.java
----------------------------------------------------------------------
diff --git a/src/main/java/org/apache/commons/math4/analysis/UnivariateMatrixFunction.java b/src/main/java/org/apache/commons/math4/analysis/UnivariateMatrixFunction.java
index 0c4b1a9..a364cb7 100644
--- a/src/main/java/org/apache/commons/math4/analysis/UnivariateMatrixFunction.java
+++ b/src/main/java/org/apache/commons/math4/analysis/UnivariateMatrixFunction.java
@@ -14,7 +14,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-package org.apache.commons.math3.analysis;
+package org.apache.commons.math4.analysis;
 
 /**
  * An interface representing a univariate matrix function.

http://git-wip-us.apache.org/repos/asf/commons-math/blob/e4e1ac23/src/main/java/org/apache/commons/math4/analysis/UnivariateVectorFunction.java
----------------------------------------------------------------------
diff --git a/src/main/java/org/apache/commons/math4/analysis/UnivariateVectorFunction.java b/src/main/java/org/apache/commons/math4/analysis/UnivariateVectorFunction.java
index 19a9e5d..c836ecb 100644
--- a/src/main/java/org/apache/commons/math4/analysis/UnivariateVectorFunction.java
+++ b/src/main/java/org/apache/commons/math4/analysis/UnivariateVectorFunction.java
@@ -14,7 +14,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-package org.apache.commons.math3.analysis;
+package org.apache.commons.math4.analysis;
 
 /**
  * An interface representing a univariate vectorial function.

http://git-wip-us.apache.org/repos/asf/commons-math/blob/e4e1ac23/src/main/java/org/apache/commons/math4/analysis/differentiation/DSCompiler.java
----------------------------------------------------------------------
diff --git a/src/main/java/org/apache/commons/math4/analysis/differentiation/DSCompiler.java b/src/main/java/org/apache/commons/math4/analysis/differentiation/DSCompiler.java
index 45a3331..979a6c0 100644
--- a/src/main/java/org/apache/commons/math4/analysis/differentiation/DSCompiler.java
+++ b/src/main/java/org/apache/commons/math4/analysis/differentiation/DSCompiler.java
@@ -14,21 +14,21 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-package org.apache.commons.math3.analysis.differentiation;
+package org.apache.commons.math4.analysis.differentiation;
 
 import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.List;
 import java.util.concurrent.atomic.AtomicReference;
 
-import org.apache.commons.math3.exception.DimensionMismatchException;
-import org.apache.commons.math3.exception.MathArithmeticException;
-import org.apache.commons.math3.exception.MathInternalError;
-import org.apache.commons.math3.exception.NotPositiveException;
-import org.apache.commons.math3.exception.NumberIsTooLargeException;
-import org.apache.commons.math3.util.CombinatoricsUtils;
-import org.apache.commons.math3.util.FastMath;
-import org.apache.commons.math3.util.MathArrays;
+import org.apache.commons.math4.exception.DimensionMismatchException;
+import org.apache.commons.math4.exception.MathArithmeticException;
+import org.apache.commons.math4.exception.MathInternalError;
+import org.apache.commons.math4.exception.NotPositiveException;
+import org.apache.commons.math4.exception.NumberIsTooLargeException;
+import org.apache.commons.math4.util.CombinatoricsUtils;
+import org.apache.commons.math4.util.FastMath;
+import org.apache.commons.math4.util.MathArrays;
 
 /** Class holding "compiled" computation rules for derivative structures.
  * <p>This class implements the computation rules described in Dan Kalman's paper <a

http://git-wip-us.apache.org/repos/asf/commons-math/blob/e4e1ac23/src/main/java/org/apache/commons/math4/analysis/differentiation/DerivativeStructure.java
----------------------------------------------------------------------
diff --git a/src/main/java/org/apache/commons/math4/analysis/differentiation/DerivativeStructure.java b/src/main/java/org/apache/commons/math4/analysis/differentiation/DerivativeStructure.java
index 7c45d18..a179eba 100644
--- a/src/main/java/org/apache/commons/math4/analysis/differentiation/DerivativeStructure.java
+++ b/src/main/java/org/apache/commons/math4/analysis/differentiation/DerivativeStructure.java
@@ -14,19 +14,19 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-package org.apache.commons.math3.analysis.differentiation;
+package org.apache.commons.math4.analysis.differentiation;
 
 import java.io.Serializable;
 
-import org.apache.commons.math3.RealFieldElement;
-import org.apache.commons.math3.Field;
-import org.apache.commons.math3.FieldElement;
-import org.apache.commons.math3.exception.DimensionMismatchException;
-import org.apache.commons.math3.exception.MathArithmeticException;
-import org.apache.commons.math3.exception.NumberIsTooLargeException;
-import org.apache.commons.math3.util.FastMath;
-import org.apache.commons.math3.util.MathArrays;
-import org.apache.commons.math3.util.MathUtils;
+import org.apache.commons.math4.Field;
+import org.apache.commons.math4.FieldElement;
+import org.apache.commons.math4.RealFieldElement;
+import org.apache.commons.math4.exception.DimensionMismatchException;
+import org.apache.commons.math4.exception.MathArithmeticException;
+import org.apache.commons.math4.exception.NumberIsTooLargeException;
+import org.apache.commons.math4.util.FastMath;
+import org.apache.commons.math4.util.MathArrays;
+import org.apache.commons.math4.util.MathUtils;
 
 /** Class representing both the value and the differentials of a function.
  * <p>This class is the workhorse of the differentiation package.</p>

http://git-wip-us.apache.org/repos/asf/commons-math/blob/e4e1ac23/src/main/java/org/apache/commons/math4/analysis/differentiation/FiniteDifferencesDifferentiator.java
----------------------------------------------------------------------
diff --git a/src/main/java/org/apache/commons/math4/analysis/differentiation/FiniteDifferencesDifferentiator.java b/src/main/java/org/apache/commons/math4/analysis/differentiation/FiniteDifferencesDifferentiator.java
index ea92809..42e01ac 100644
--- a/src/main/java/org/apache/commons/math4/analysis/differentiation/FiniteDifferencesDifferentiator.java
+++ b/src/main/java/org/apache/commons/math4/analysis/differentiation/FiniteDifferencesDifferentiator.java
@@ -14,18 +14,18 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-package org.apache.commons.math3.analysis.differentiation;
+package org.apache.commons.math4.analysis.differentiation;
 
 import java.io.Serializable;
 
-import org.apache.commons.math3.analysis.UnivariateFunction;
-import org.apache.commons.math3.analysis.UnivariateMatrixFunction;
-import org.apache.commons.math3.analysis.UnivariateVectorFunction;
-import org.apache.commons.math3.exception.MathIllegalArgumentException;
-import org.apache.commons.math3.exception.NotPositiveException;
-import org.apache.commons.math3.exception.NumberIsTooLargeException;
-import org.apache.commons.math3.exception.NumberIsTooSmallException;
-import org.apache.commons.math3.util.FastMath;
+import org.apache.commons.math4.analysis.UnivariateFunction;
+import org.apache.commons.math4.analysis.UnivariateMatrixFunction;
+import org.apache.commons.math4.analysis.UnivariateVectorFunction;
+import org.apache.commons.math4.exception.MathIllegalArgumentException;
+import org.apache.commons.math4.exception.NotPositiveException;
+import org.apache.commons.math4.exception.NumberIsTooLargeException;
+import org.apache.commons.math4.exception.NumberIsTooSmallException;
+import org.apache.commons.math4.util.FastMath;
 
 /** Univariate functions differentiator using finite differences.
  * <p>

http://git-wip-us.apache.org/repos/asf/commons-math/blob/e4e1ac23/src/main/java/org/apache/commons/math4/analysis/differentiation/GradientFunction.java
----------------------------------------------------------------------
diff --git a/src/main/java/org/apache/commons/math4/analysis/differentiation/GradientFunction.java b/src/main/java/org/apache/commons/math4/analysis/differentiation/GradientFunction.java
index 25aa7c7..0b75ae8 100644
--- a/src/main/java/org/apache/commons/math4/analysis/differentiation/GradientFunction.java
+++ b/src/main/java/org/apache/commons/math4/analysis/differentiation/GradientFunction.java
@@ -14,9 +14,9 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-package org.apache.commons.math3.analysis.differentiation;
+package org.apache.commons.math4.analysis.differentiation;
 
-import org.apache.commons.math3.analysis.MultivariateVectorFunction;
+import org.apache.commons.math4.analysis.MultivariateVectorFunction;
 
 /** Class representing the gradient of a multivariate function.
  * <p>

http://git-wip-us.apache.org/repos/asf/commons-math/blob/e4e1ac23/src/main/java/org/apache/commons/math4/analysis/differentiation/JacobianFunction.java
----------------------------------------------------------------------
diff --git a/src/main/java/org/apache/commons/math4/analysis/differentiation/JacobianFunction.java b/src/main/java/org/apache/commons/math4/analysis/differentiation/JacobianFunction.java
index 0de47db..f7b8082 100644
--- a/src/main/java/org/apache/commons/math4/analysis/differentiation/JacobianFunction.java
+++ b/src/main/java/org/apache/commons/math4/analysis/differentiation/JacobianFunction.java
@@ -14,9 +14,9 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-package org.apache.commons.math3.analysis.differentiation;
+package org.apache.commons.math4.analysis.differentiation;
 
-import org.apache.commons.math3.analysis.MultivariateMatrixFunction;
+import org.apache.commons.math4.analysis.MultivariateMatrixFunction;
 
 /** Class representing the Jacobian of a multivariate vector function.
  * <p>

http://git-wip-us.apache.org/repos/asf/commons-math/blob/e4e1ac23/src/main/java/org/apache/commons/math4/analysis/differentiation/MultivariateDifferentiableFunction.java
----------------------------------------------------------------------
diff --git a/src/main/java/org/apache/commons/math4/analysis/differentiation/MultivariateDifferentiableFunction.java b/src/main/java/org/apache/commons/math4/analysis/differentiation/MultivariateDifferentiableFunction.java
index 443671e..068e053 100644
--- a/src/main/java/org/apache/commons/math4/analysis/differentiation/MultivariateDifferentiableFunction.java
+++ b/src/main/java/org/apache/commons/math4/analysis/differentiation/MultivariateDifferentiableFunction.java
@@ -15,10 +15,10 @@
  * limitations under the License.
  */
 
-package org.apache.commons.math3.analysis.differentiation;
+package org.apache.commons.math4.analysis.differentiation;
 
-import org.apache.commons.math3.analysis.MultivariateFunction;
-import org.apache.commons.math3.exception.MathIllegalArgumentException;
+import org.apache.commons.math4.analysis.MultivariateFunction;
+import org.apache.commons.math4.exception.MathIllegalArgumentException;
 
 /**
  * Extension of {@link MultivariateFunction} representing a

http://git-wip-us.apache.org/repos/asf/commons-math/blob/e4e1ac23/src/main/java/org/apache/commons/math4/analysis/differentiation/MultivariateDifferentiableVectorFunction.java
----------------------------------------------------------------------
diff --git a/src/main/java/org/apache/commons/math4/analysis/differentiation/MultivariateDifferentiableVectorFunction.java b/src/main/java/org/apache/commons/math4/analysis/differentiation/MultivariateDifferentiableVectorFunction.java
index a5987ae..fe2bd15 100644
--- a/src/main/java/org/apache/commons/math4/analysis/differentiation/MultivariateDifferentiableVectorFunction.java
+++ b/src/main/java/org/apache/commons/math4/analysis/differentiation/MultivariateDifferentiableVectorFunction.java
@@ -15,10 +15,10 @@
  * limitations under the License.
  */
 
-package org.apache.commons.math3.analysis.differentiation;
+package org.apache.commons.math4.analysis.differentiation;
 
-import org.apache.commons.math3.analysis.MultivariateVectorFunction;
-import org.apache.commons.math3.exception.MathIllegalArgumentException;
+import org.apache.commons.math4.analysis.MultivariateVectorFunction;
+import org.apache.commons.math4.exception.MathIllegalArgumentException;
 
 
 /**

http://git-wip-us.apache.org/repos/asf/commons-math/blob/e4e1ac23/src/main/java/org/apache/commons/math4/analysis/differentiation/SparseGradient.java
----------------------------------------------------------------------
diff --git a/src/main/java/org/apache/commons/math4/analysis/differentiation/SparseGradient.java b/src/main/java/org/apache/commons/math4/analysis/differentiation/SparseGradient.java
index 59fcea5..adff345 100644
--- a/src/main/java/org/apache/commons/math4/analysis/differentiation/SparseGradient.java
+++ b/src/main/java/org/apache/commons/math4/analysis/differentiation/SparseGradient.java
@@ -14,21 +14,21 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-package org.apache.commons.math3.analysis.differentiation;
+package org.apache.commons.math4.analysis.differentiation;
 
 import java.io.Serializable;
 import java.util.Collections;
 import java.util.HashMap;
 import java.util.Map;
 
-import org.apache.commons.math3.Field;
-import org.apache.commons.math3.FieldElement;
-import org.apache.commons.math3.RealFieldElement;
-import org.apache.commons.math3.exception.DimensionMismatchException;
-import org.apache.commons.math3.util.FastMath;
-import org.apache.commons.math3.util.MathArrays;
-import org.apache.commons.math3.util.MathUtils;
-import org.apache.commons.math3.util.Precision;
+import org.apache.commons.math4.Field;
+import org.apache.commons.math4.FieldElement;
+import org.apache.commons.math4.RealFieldElement;
+import org.apache.commons.math4.exception.DimensionMismatchException;
+import org.apache.commons.math4.util.FastMath;
+import org.apache.commons.math4.util.MathArrays;
+import org.apache.commons.math4.util.MathUtils;
+import org.apache.commons.math4.util.Precision;
 
 /**
  * First derivative computation with large number of variables.

http://git-wip-us.apache.org/repos/asf/commons-math/blob/e4e1ac23/src/main/java/org/apache/commons/math4/analysis/differentiation/UnivariateDifferentiableFunction.java
----------------------------------------------------------------------
diff --git a/src/main/java/org/apache/commons/math4/analysis/differentiation/UnivariateDifferentiableFunction.java b/src/main/java/org/apache/commons/math4/analysis/differentiation/UnivariateDifferentiableFunction.java
index 097b4e0..7e651e6 100644
--- a/src/main/java/org/apache/commons/math4/analysis/differentiation/UnivariateDifferentiableFunction.java
+++ b/src/main/java/org/apache/commons/math4/analysis/differentiation/UnivariateDifferentiableFunction.java
@@ -14,10 +14,10 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-package org.apache.commons.math3.analysis.differentiation;
+package org.apache.commons.math4.analysis.differentiation;
 
-import org.apache.commons.math3.analysis.UnivariateFunction;
-import org.apache.commons.math3.exception.DimensionMismatchException;
+import org.apache.commons.math4.analysis.UnivariateFunction;
+import org.apache.commons.math4.exception.DimensionMismatchException;
 
 /** Interface for univariate functions derivatives.
  * <p>This interface represents a simple function which computes

http://git-wip-us.apache.org/repos/asf/commons-math/blob/e4e1ac23/src/main/java/org/apache/commons/math4/analysis/differentiation/UnivariateDifferentiableMatrixFunction.java
----------------------------------------------------------------------
diff --git a/src/main/java/org/apache/commons/math4/analysis/differentiation/UnivariateDifferentiableMatrixFunction.java b/src/main/java/org/apache/commons/math4/analysis/differentiation/UnivariateDifferentiableMatrixFunction.java
index b31771b..26e5834 100644
--- a/src/main/java/org/apache/commons/math4/analysis/differentiation/UnivariateDifferentiableMatrixFunction.java
+++ b/src/main/java/org/apache/commons/math4/analysis/differentiation/UnivariateDifferentiableMatrixFunction.java
@@ -14,10 +14,10 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-package org.apache.commons.math3.analysis.differentiation;
+package org.apache.commons.math4.analysis.differentiation;
 
-import org.apache.commons.math3.analysis.UnivariateMatrixFunction;
-import org.apache.commons.math3.exception.MathIllegalArgumentException;
+import org.apache.commons.math4.analysis.UnivariateMatrixFunction;
+import org.apache.commons.math4.exception.MathIllegalArgumentException;
 
 /**
  * Extension of {@link UnivariateMatrixFunction} representing a univariate differentiable matrix function.

http://git-wip-us.apache.org/repos/asf/commons-math/blob/e4e1ac23/src/main/java/org/apache/commons/math4/analysis/differentiation/UnivariateDifferentiableVectorFunction.java
----------------------------------------------------------------------
diff --git a/src/main/java/org/apache/commons/math4/analysis/differentiation/UnivariateDifferentiableVectorFunction.java b/src/main/java/org/apache/commons/math4/analysis/differentiation/UnivariateDifferentiableVectorFunction.java
index 7e79eef..c4c2a0f 100644
--- a/src/main/java/org/apache/commons/math4/analysis/differentiation/UnivariateDifferentiableVectorFunction.java
+++ b/src/main/java/org/apache/commons/math4/analysis/differentiation/UnivariateDifferentiableVectorFunction.java
@@ -14,10 +14,10 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-package org.apache.commons.math3.analysis.differentiation;
+package org.apache.commons.math4.analysis.differentiation;
 
-import org.apache.commons.math3.analysis.UnivariateVectorFunction;
-import org.apache.commons.math3.exception.MathIllegalArgumentException;
+import org.apache.commons.math4.analysis.UnivariateVectorFunction;
+import org.apache.commons.math4.exception.MathIllegalArgumentException;
 
 /**
  * Extension of {@link UnivariateVectorFunction} representing a univariate differentiable vectorial function.

http://git-wip-us.apache.org/repos/asf/commons-math/blob/e4e1ac23/src/main/java/org/apache/commons/math4/analysis/differentiation/UnivariateFunctionDifferentiator.java
----------------------------------------------------------------------
diff --git a/src/main/java/org/apache/commons/math4/analysis/differentiation/UnivariateFunctionDifferentiator.java b/src/main/java/org/apache/commons/math4/analysis/differentiation/UnivariateFunctionDifferentiator.java
index f19ce20..b4ec86e 100644
--- a/src/main/java/org/apache/commons/math4/analysis/differentiation/UnivariateFunctionDifferentiator.java
+++ b/src/main/java/org/apache/commons/math4/analysis/differentiation/UnivariateFunctionDifferentiator.java
@@ -14,9 +14,9 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-package org.apache.commons.math3.analysis.differentiation;
+package org.apache.commons.math4.analysis.differentiation;
 
-import org.apache.commons.math3.analysis.UnivariateFunction;
+import org.apache.commons.math4.analysis.UnivariateFunction;
 
 /** Interface defining the function differentiation operation.
  * @since 3.1

http://git-wip-us.apache.org/repos/asf/commons-math/blob/e4e1ac23/src/main/java/org/apache/commons/math4/analysis/differentiation/UnivariateMatrixFunctionDifferentiator.java
----------------------------------------------------------------------
diff --git a/src/main/java/org/apache/commons/math4/analysis/differentiation/UnivariateMatrixFunctionDifferentiator.java b/src/main/java/org/apache/commons/math4/analysis/differentiation/UnivariateMatrixFunctionDifferentiator.java
index bc0ccf3..2c42ee5 100644
--- a/src/main/java/org/apache/commons/math4/analysis/differentiation/UnivariateMatrixFunctionDifferentiator.java
+++ b/src/main/java/org/apache/commons/math4/analysis/differentiation/UnivariateMatrixFunctionDifferentiator.java
@@ -14,9 +14,9 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-package org.apache.commons.math3.analysis.differentiation;
+package org.apache.commons.math4.analysis.differentiation;
 
-import org.apache.commons.math3.analysis.UnivariateMatrixFunction;
+import org.apache.commons.math4.analysis.UnivariateMatrixFunction;
 
 /** Interface defining the function differentiation operation.
  * @since 3.1

http://git-wip-us.apache.org/repos/asf/commons-math/blob/e4e1ac23/src/main/java/org/apache/commons/math4/analysis/differentiation/UnivariateVectorFunctionDifferentiator.java
----------------------------------------------------------------------
diff --git a/src/main/java/org/apache/commons/math4/analysis/differentiation/UnivariateVectorFunctionDifferentiator.java b/src/main/java/org/apache/commons/math4/analysis/differentiation/UnivariateVectorFunctionDifferentiator.java
index 5500c50..e197525 100644
--- a/src/main/java/org/apache/commons/math4/analysis/differentiation/UnivariateVectorFunctionDifferentiator.java
+++ b/src/main/java/org/apache/commons/math4/analysis/differentiation/UnivariateVectorFunctionDifferentiator.java
@@ -14,9 +14,9 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-package org.apache.commons.math3.analysis.differentiation;
+package org.apache.commons.math4.analysis.differentiation;
 
-import org.apache.commons.math3.analysis.UnivariateVectorFunction;
+import org.apache.commons.math4.analysis.UnivariateVectorFunction;
 
 /** Interface defining the function differentiation operation.
  * @since 3.1

http://git-wip-us.apache.org/repos/asf/commons-math/blob/e4e1ac23/src/main/java/org/apache/commons/math4/analysis/differentiation/package-info.java
----------------------------------------------------------------------
diff --git a/src/main/java/org/apache/commons/math4/analysis/differentiation/package-info.java b/src/main/java/org/apache/commons/math4/analysis/differentiation/package-info.java
index b828981..6b5f68c 100644
--- a/src/main/java/org/apache/commons/math4/analysis/differentiation/package-info.java
+++ b/src/main/java/org/apache/commons/math4/analysis/differentiation/package-info.java
@@ -19,19 +19,19 @@
  * <p>
  *   This package holds the main interfaces and basic building block classes
  *   dealing with differentiation.
- *   The core class is {@link org.apache.commons.math3.analysis.differentiation.DerivativeStructure
+ *   The core class is {@link org.apache.commons.math4.analysis.differentiation.DerivativeStructure
  *   DerivativeStructure} which holds the value and the differentials of a function. This class
  *   handles some arbitrary number of free parameters and arbitrary differentiation order. It is used
  *   both as the input and the output type for the {@link
- *   org.apache.commons.math3.analysis.differentiation.UnivariateDifferentiableFunction
+ *   org.apache.commons.math4.analysis.differentiation.UnivariateDifferentiableFunction
  *   UnivariateDifferentiableFunction} interface. Any differentiable function should implement this
  *   interface.
  * </p>
  * <p>
- *   The {@link org.apache.commons.math3.analysis.differentiation.UnivariateFunctionDifferentiator
+ *   The {@link org.apache.commons.math4.analysis.differentiation.UnivariateFunctionDifferentiator
  *   UnivariateFunctionDifferentiator} interface defines a way to differentiate a simple {@link
- *   org.apache.commons.math3.analysis.UnivariateFunction UnivariateFunction} and get a {@link
- *   org.apache.commons.math3.analysis.differentiation.UnivariateDifferentiableFunction
+ *   org.apache.commons.math4.analysis.UnivariateFunction UnivariateFunction} and get a {@link
+ *   org.apache.commons.math4.analysis.differentiation.UnivariateDifferentiableFunction
  *   UnivariateDifferentiableFunction}.
  * </p>
  * <p>
@@ -39,4 +39,4 @@
  * </p>
  *
  */
-package org.apache.commons.math3.analysis.differentiation;
+package org.apache.commons.math4.analysis.differentiation;

http://git-wip-us.apache.org/repos/asf/commons-math/blob/e4e1ac23/src/main/java/org/apache/commons/math4/analysis/function/Abs.java
----------------------------------------------------------------------
diff --git a/src/main/java/org/apache/commons/math4/analysis/function/Abs.java b/src/main/java/org/apache/commons/math4/analysis/function/Abs.java
index 9db01fd..6f19b54 100644
--- a/src/main/java/org/apache/commons/math4/analysis/function/Abs.java
+++ b/src/main/java/org/apache/commons/math4/analysis/function/Abs.java
@@ -15,10 +15,10 @@
  * limitations under the License.
  */
 
-package org.apache.commons.math3.analysis.function;
+package org.apache.commons.math4.analysis.function;
 
-import org.apache.commons.math3.analysis.UnivariateFunction;
-import org.apache.commons.math3.util.FastMath;
+import org.apache.commons.math4.analysis.UnivariateFunction;
+import org.apache.commons.math4.util.FastMath;
 
 /**
  * Absolute value function.


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