# HG changeset patch
# User dwinter
# Date 1294131791 -3600
# Node ID a705726863bccd995f322dd71fc09386759b43f7
# Parent  e8ccd518555b43cdc80073092150ed58ea1da33e
commons-math-2.1 added

diff -r e8ccd518555b -r a705726863bc libs/commons-math-2.1/LICENSE.txt
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/libs/commons-math-2.1/LICENSE.txt	Tue Jan 04 10:03:11 2011 +0100
@@ -0,0 +1,376 @@
+
+                                 Apache License
+                           Version 2.0, January 2004
+                        http://www.apache.org/licenses/
+
+   TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
+
+   1. Definitions.
+
+      "License" shall mean the terms and conditions for use, reproduction,
+      and distribution as defined by Sections 1 through 9 of this document.
+
+      "Licensor" shall mean the copyright owner or entity authorized by
+      the copyright owner that is granting the License.
+
+      "Legal Entity" shall mean the union of the acting entity and all
+      other entities that control, are controlled by, or are under common
+      control with that entity. For the purposes of this definition,
+      "control" means (i) the power, direct or indirect, to cause the
+      direction or management of such entity, whether by contract or
+      otherwise, or (ii) ownership of fifty percent (50%) or more of the
+      outstanding shares, or (iii) beneficial ownership of such entity.
+
+      "You" (or "Your") shall mean an individual or Legal Entity
+      exercising permissions granted by this License.
+
+      "Source" form shall mean the preferred form for making modifications,
+      including but not limited to software source code, documentation
+      source, and configuration files.
+
+      "Object" form shall mean any form resulting from mechanical
+      transformation or translation of a Source form, including but
+      not limited to compiled object code, generated documentation,
+      and conversions to other media types.
+
+      "Work" shall mean the work of authorship, whether in Source or
+      Object form, made available under the License, as indicated by a
+      copyright notice that is included in or attached to the work
+      (an example is provided in the Appendix below).
+
+      "Derivative Works" shall mean any work, whether in Source or Object
+      form, that is based on (or derived from) the Work and for which the
+      editorial revisions, annotations, elaborations, or other modifications
+      represent, as a whole, an original work of authorship. For the purposes
+      of this License, Derivative Works shall not include works that remain
+      separable from, or merely link (or bind by name) to the interfaces of,
+      the Work and Derivative Works thereof.
+
+      "Contribution" shall mean any work of authorship, including
+      the original version of the Work and any modifications or additions
+      to that Work or Derivative Works thereof, that is intentionally
+      submitted to Licensor for inclusion in the Work by the copyright owner
+      or by an individual or Legal Entity authorized to submit on behalf of
+      the copyright owner. For the purposes of this definition, "submitted"
+      means any form of electronic, verbal, or written communication sent
+      to the Licensor or its representatives, including but not limited to
+      communication on electronic mailing lists, source code control systems,
+      and issue tracking systems that are managed by, or on behalf of, the
+      Licensor for the purpose of discussing and improving the Work, but
+      excluding communication that is conspicuously marked or otherwise
+      designated in writing by the copyright owner as "Not a Contribution."
+
+      "Contributor" shall mean Licensor and any individual or Legal Entity
+      on behalf of whom a Contribution has been received by Licensor and
+      subsequently incorporated within the Work.
+
+   2. Grant of Copyright License. Subject to the terms and conditions of
+      this License, each Contributor hereby grants to You a perpetual,
+      worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+      copyright license to reproduce, prepare Derivative Works of,
+      publicly display, publicly perform, sublicense, and distribute the
+      Work and such Derivative Works in Source or Object form.
+
+   3. Grant of Patent License. Subject to the terms and conditions of
+      this License, each Contributor hereby grants to You a perpetual,
+      worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+      (except as stated in this section) patent license to make, have made,
+      use, offer to sell, sell, import, and otherwise transfer the Work,
+      where such license applies only to those patent claims licensable
+      by such Contributor that are necessarily infringed by their
+      Contribution(s) alone or by combination of their Contribution(s)
+      with the Work to which such Contribution(s) was submitted. If You
+      institute patent litigation against any entity (including a
+      cross-claim or counterclaim in a lawsuit) alleging that the Work
+      or a Contribution incorporated within the Work constitutes direct
+      or contributory patent infringement, then any patent licenses
+      granted to You under this License for that Work shall terminate
+      as of the date such litigation is filed.
+
+   4. Redistribution. You may reproduce and distribute copies of the
+      Work or Derivative Works thereof in any medium, with or without
+      modifications, and in Source or Object form, provided that You
+      meet the following conditions:
+
+      (a) You must give any other recipients of the Work or
+          Derivative Works a copy of this License; and
+
+      (b) You must cause any modified files to carry prominent notices
+          stating that You changed the files; and
+
+      (c) You must retain, in the Source form of any Derivative Works
+          that You distribute, all copyright, patent, trademark, and
+          attribution notices from the Source form of the Work,
+          excluding those notices that do not pertain to any part of
+          the Derivative Works; and
+
+      (d) If the Work includes a "NOTICE" text file as part of its
+          distribution, then any Derivative Works that You distribute must
+          include a readable copy of the attribution notices contained
+          within such NOTICE file, excluding those notices that do not
+          pertain to any part of the Derivative Works, in at least one
+          of the following places: within a NOTICE text file distributed
+          as part of the Derivative Works; within the Source form or
+          documentation, if provided along with the Derivative Works; or,
+          within a display generated by the Derivative Works, if and
+          wherever such third-party notices normally appear. The contents
+          of the NOTICE file are for informational purposes only and
+          do not modify the License. You may add Your own attribution
+          notices within Derivative Works that You distribute, alongside
+          or as an addendum to the NOTICE text from the Work, provided
+          that such additional attribution notices cannot be construed
+          as modifying the License.
+
+      You may add Your own copyright statement to Your modifications and
+      may provide additional or different license terms and conditions
+      for use, reproduction, or distribution of Your modifications, or
+      for any such Derivative Works as a whole, provided Your use,
+      reproduction, and distribution of the Work otherwise complies with
+      the conditions stated in this License.
+
+   5. Submission of Contributions. Unless You explicitly state otherwise,
+      any Contribution intentionally submitted for inclusion in the Work
+      by You to the Licensor shall be under the terms and conditions of
+      this License, without any additional terms or conditions.
+      Notwithstanding the above, nothing herein shall supersede or modify
+      the terms of any separate license agreement you may have executed
+      with Licensor regarding such Contributions.
+
+   6. Trademarks. This License does not grant permission to use the trade
+      names, trademarks, service marks, or product names of the Licensor,
+      except as required for reasonable and customary use in describing the
+      origin of the Work and reproducing the content of the NOTICE file.
+
+   7. Disclaimer of Warranty. Unless required by applicable law or
+      agreed to in writing, Licensor provides the Work (and each
+      Contributor provides its Contributions) on an "AS IS" BASIS,
+      WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+      implied, including, without limitation, any warranties or conditions
+      of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A
+      PARTICULAR PURPOSE. You are solely responsible for determining the
+      appropriateness of using or redistributing the Work and assume any
+      risks associated with Your exercise of permissions under this License.
+
+   8. Limitation of Liability. In no event and under no legal theory,
+      whether in tort (including negligence), contract, or otherwise,
+      unless required by applicable law (such as deliberate and grossly
+      negligent acts) or agreed to in writing, shall any Contributor be
+      liable to You for damages, including any direct, indirect, special,
+      incidental, or consequential damages of any character arising as a
+      result of this License or out of the use or inability to use the
+      Work (including but not limited to damages for loss of goodwill,
+      work stoppage, computer failure or malfunction, or any and all
+      other commercial damages or losses), even if such Contributor
+      has been advised of the possibility of such damages.
+
+   9. Accepting Warranty or Additional Liability. While redistributing
+      the Work or Derivative Works thereof, You may choose to offer,
+      and charge a fee for, acceptance of support, warranty, indemnity,
+      or other liability obligations and/or rights consistent with this
+      License. However, in accepting such obligations, You may act only
+      on Your own behalf and on Your sole responsibility, not on behalf
+      of any other Contributor, and only if You agree to indemnify,
+      defend, and hold each Contributor harmless for any liability
+      incurred by, or claims asserted against, such Contributor by reason
+      of your accepting any such warranty or additional liability.
+
+   END OF TERMS AND CONDITIONS
+
+   APPENDIX: How to apply the Apache License to your work.
+
+      To apply the Apache License to your work, attach the following
+      boilerplate notice, with the fields enclosed by brackets "[]"
+      replaced with your own identifying information. (Don't include
+      the brackets!)  The text should be enclosed in the appropriate
+      comment syntax for the file format. We also recommend that a
+      file or class name and description of purpose be included on the
+      same "printed page" as the copyright notice for easier
+      identification within third-party archives.
+
+   Copyright [yyyy] [name of copyright owner]
+
+   Licensed under the Apache License, Version 2.0 (the "License");
+   you may not use this file except in compliance with the License.
+   You may obtain a copy of the License at
+
+       http://www.apache.org/licenses/LICENSE-2.0
+
+   Unless required by applicable law or agreed to in writing, software
+   distributed under the License is distributed on an "AS IS" BASIS,
+   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+   See the License for the specific language governing permissions and
+   limitations under the License.
+
+
+APACHE COMMONS MATH DERIVATIVE WORKS: 
+
+The Apache commons-math library includes a number of subcomponents
+whose implementation is derived from original sources written
+in C or Fortran.  License terms of the original sources
+are reproduced below.
+
+===============================================================================
+For the lmder, lmpar and qrsolv Fortran routine from minpack and translated in
+the LevenbergMarquardtOptimizer class in package
+org.apache.commons.math.optimization.general 
+Original source copyright and license statement:
+
+Minpack Copyright Notice (1999) University of Chicago.  All rights reserved
+
+Redistribution and use in source and binary forms, with or
+without modification, are permitted provided that the
+following conditions are met:
+
+1. Redistributions of source code must retain the above
+copyright notice, this list of conditions and the following
+disclaimer.
+
+2. Redistributions in binary form must reproduce the above
+copyright notice, this list of conditions and the following
+disclaimer in the documentation and/or other materials
+provided with the distribution.
+
+3. The end-user documentation included with the
+redistribution, if any, must include the following
+acknowledgment:
+
+   "This product includes software developed by the
+   University of Chicago, as Operator of Argonne National
+   Laboratory.
+
+Alternately, this acknowledgment may appear in the software
+itself, if and wherever such third-party acknowledgments
+normally appear.
+
+4. WARRANTY DISCLAIMER. THE SOFTWARE IS SUPPLIED "AS IS"
+WITHOUT WARRANTY OF ANY KIND. THE COPYRIGHT HOLDER, THE
+UNITED STATES, THE UNITED STATES DEPARTMENT OF ENERGY, AND
+THEIR EMPLOYEES: (1) DISCLAIM ANY WARRANTIES, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO ANY IMPLIED WARRANTIES
+OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, TITLE
+OR NON-INFRINGEMENT, (2) DO NOT ASSUME ANY LEGAL LIABILITY
+OR RESPONSIBILITY FOR THE ACCURACY, COMPLETENESS, OR
+USEFULNESS OF THE SOFTWARE, (3) DO NOT REPRESENT THAT USE OF
+THE SOFTWARE WOULD NOT INFRINGE PRIVATELY OWNED RIGHTS, (4)
+DO NOT WARRANT THAT THE SOFTWARE WILL FUNCTION
+UNINTERRUPTED, THAT IT IS ERROR-FREE OR THAT ANY ERRORS WILL
+BE CORRECTED.
+
+5. LIMITATION OF LIABILITY. IN NO EVENT WILL THE COPYRIGHT
+HOLDER, THE UNITED STATES, THE UNITED STATES DEPARTMENT OF
+ENERGY, OR THEIR EMPLOYEES: BE LIABLE FOR ANY INDIRECT,
+INCIDENTAL, CONSEQUENTIAL, SPECIAL OR PUNITIVE DAMAGES OF
+ANY KIND OR NATURE, INCLUDING BUT NOT LIMITED TO LOSS OF
+PROFITS OR LOSS OF DATA, FOR ANY REASON WHATSOEVER, WHETHER
+SUCH LIABILITY IS ASSERTED ON THE BASIS OF CONTRACT, TORT
+(INCLUDING NEGLIGENCE OR STRICT LIABILITY), OR OTHERWISE,
+EVEN IF ANY OF SAID PARTIES HAS BEEN WARNED OF THE
+POSSIBILITY OF SUCH LOSS OR DAMAGES.
+===============================================================================
+
+Copyright and license statement for the odex Fortran routine developed by
+E. Hairer and G. Wanner and translated in GraggBulirschStoerIntegrator class
+in package org.apache.commons.math.ode.nonstiff:
+
+
+Copyright (c) 2004, Ernst Hairer
+
+Redistribution and use in source and binary forms, with or without 
+modification, are permitted provided that the following conditions are 
+met:
+
+- Redistributions of source code must retain the above copyright 
+notice, this list of conditions and the following disclaimer.
+
+- Redistributions in binary form must reproduce the above copyright 
+notice, this list of conditions and the following disclaimer in the 
+documentation and/or other materials provided with the distribution.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS 
+IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 
+TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A 
+PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR 
+CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 
+EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 
+PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR 
+PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF 
+LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING 
+NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS 
+SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+===============================================================================
+
+Copyright and license statement for the original lapack fortran routines
+translated in EigenDecompositionImpl class in package
+org.apache.commons.math.linear:
+
+Copyright (c) 1992-2008 The University of Tennessee.  All rights reserved.
+
+$COPYRIGHT$
+
+Additional copyrights may follow
+
+$HEADER$
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are
+met:
+
+- Redistributions of source code must retain the above copyright
+  notice, this list of conditions and the following disclaimer. 
+  
+- Redistributions in binary form must reproduce the above copyright
+  notice, this list of conditions and the following disclaimer listed
+  in this license in the documentation and/or other materials
+  provided with the distribution.
+  
+- Neither the name of the copyright holders nor the names of its
+  contributors may be used to endorse or promote products derived from
+  this software without specific prior written permission.
+  
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT  
+LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 
+OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT  
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 
+===============================================================================
+
+Copyright and license statement for the original Mersenne twister C
+routines translated in MersenneTwister class in package 
+org.apache.commons.math.random:
+
+   Copyright (C) 1997 - 2002, Makoto Matsumoto and Takuji Nishimura,
+   All rights reserved.                          
+
+   Redistribution and use in source and binary forms, with or without
+   modification, are permitted provided that the following conditions
+   are met:
+
+     1. Redistributions of source code must retain the above copyright
+        notice, this list of conditions and the following disclaimer.
+
+     2. Redistributions in binary form must reproduce the above copyright
+        notice, this list of conditions and the following disclaimer in the
+        documentation and/or other materials provided with the distribution.
+
+     3. The names of its contributors may not be used to endorse or promote 
+        products derived from this software without specific prior written 
+        permission.
+
+   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+   "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+   A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR
+   CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+   EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+   PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+   PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+   LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+   NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+   SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
diff -r e8ccd518555b -r a705726863bc libs/commons-math-2.1/NOTICE.txt
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/libs/commons-math-2.1/NOTICE.txt	Tue Jan 04 10:03:11 2011 +0100
@@ -0,0 +1,48 @@
+Apache Commons Math
+Copyright 2001-2010 The Apache Software Foundation
+
+This product includes software developed by
+The Apache Software Foundation (http://www.apache.org/).
+
+===============================================================================
+The LinearConstraint, LinearObjectiveFunction, LinearOptimizer,
+RelationShip, SimplexSolver and SimplexTableau classes in package
+org.apache.commons.math.optimization.linear include software developed by
+Benjamin McCann (http://www.benmccann.com) and distributed with
+the following copyright: Copyright 2009 Google Inc.
+===============================================================================
+
+This product includes software developed by the
+University of Chicago, as Operator of Argonne National
+Laboratory.
+The LevenbergMarquardtOptimizer class in package
+org.apache.commons.math.optimization.general includes software
+translated from the lmder, lmpar and qrsolv Fortran routines
+from the Minpack package
+Minpack Copyright Notice (1999) University of Chicago.  All rights reserved
+===============================================================================
+
+The GraggBulirschStoerIntegrator class in package
+org.apache.commons.math.ode.nonstiff includes software translated
+from the odex Fortran routine developed by E. Hairer and G. Wanner.
+Original source copyright:
+Copyright (c) 2004, Ernst Hairer
+===============================================================================
+
+The EigenDecompositionImpl class in package
+org.apache.commons.math.linear includes software translated
+from some LAPACK Fortran routines.  Original source copyright:
+Copyright (c) 1992-2008 The University of Tennessee.  All rights reserved.
+===============================================================================
+
+The MersenneTwister class in package org.apache.commons.math.random
+includes software translated from the 2002-01-26 version of
+the Mersenne-Twister generator written in C by Makoto Matsumoto and Takuji
+Nishimura. Original source copyright:
+Copyright (C) 1997 - 2002, Makoto Matsumoto and Takuji Nishimura,
+All rights reserved
+===============================================================================
+
+The complete text of licenses and disclaimers associated with the the original
+sources enumerated above at the time of code translation are in the LICENSE.txt
+file.
diff -r e8ccd518555b -r a705726863bc libs/commons-math-2.1/RELEASE-NOTES.txt
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/libs/commons-math-2.1/RELEASE-NOTES.txt	Tue Jan 04 10:03:11 2011 +0100
@@ -0,0 +1,142 @@
+                        
+
+              Apache Commons Math 2.1 RELEASE NOTES
+
+This is primarily a maintenance release, but it also includes new features and enhancements.
+Users of version 2.0 are encouraged to upgrade to 2.1, as this release includes some important
+bug fixes.  See the detailed list of changes below for full description of all bug fixes and
+enhancements. 
+
+This release contains some minor API compatibility breaks with version 2.0:
+ --------------------------------------------------------------------------
+ - the return type of RealVector.copy() has been changed to AbstractRealVector
+ - the no-argument constructor of MatrixUtils() has been made private
+ - the mapXxxToSelf methods of OpenMapRealVector have been removed and some method return types
+   have been changed in this class
+ - new methods have been added to the RealVector interface
+ - several fields in AdaptiveStepSizeIntegrator have been made final
+ - DummyStepInterpolator requires an additional argument for one of its constructors
+ - some protected fields have been removed from AbstractLeastSquaresOptimizer,
+   AbstractScalarDifferentiableOptimizer and AbstractLinearOptimizer
+ - the isOptimal(SimplexTableau) method has been removed from SimplexSolver
+
+Changes in this version include:
+
+New features:
+o MATH-357:  Implementation of bicubic interpolation. 
+o Added a way to compute both the final state in an Initial Value Problem (IVP)
+        for Ordinary Differential Equations (ODE) and its derivatives with respect to
+        initial state and with respect to some problem parameters. This allows wrapping
+        ODE solvers into optimization or root finding algorithms, which in turn can be
+        used to solve Boundary Value Problems (BVP). There are no implementations (yet)
+        of BVP solvers in the library. 
+o MATH-323:  Added SemiVariance statistic. Thanks to Larry Diamond. 
+o MATH-341:  Added a warning in the getCoefficients method documentation for
+        PolynomialFunctionLagrangeForm. Computation may be ill-conditioned
+        so this method should be used with care. 
+o MATH-340:  Fixed an error in BigFraction multiplication for large numerators that don't
+        fit in a primitive int. 
+o MATH-334:  Added min/max getters for real vectors (not yet in the RealVector interface for
+        compatibility purposes, but in the AbstractRealVector abstract class). 
+o MATH-321:  Singular Value Decomposition now computes either the compact SVD (using only
+        positive singular values) or truncated SVD (using a user-specified maximal
+        number of singular values). 
+o MATH-300:  Added support for multidimensional interpolation using the robust microsphere algorithm. Thanks to Gilles Sadowski. 
+o MATH-287:  Added support for weighted descriptive statistics. Thanks to Matthew Rowles. 
+o Added normalizeArray method to MathUtils. 
+
+Fixed Bugs:
+o MATH-360:  Fix use of wrong variable in SmoothingBicubicSplineInterpolatorTest.testPreconditions() 
+o MATH-335:  Fraction.hashCode() implementation was not fully consistent with Fraction.equals().
+        Changed hashCode() to use fields directly to agree with equals(). 
+o MATH-282:  Resolved multiple problems leading to inaccuracy and/or failure to compute Normal,
+        ChiSquare and  Poisson probabilities, Erf and Gamma functions.  Made Brent solver 
+        absolute accuracy configurable for all continuous distributions. 
+o MATH-347:  Fixed too stringent interval check in Brent solver: initial guess is now
+        allowed to be at either interval end 
+o MATH-358:  Fixed an error in events handling in ODE solvers. In some rare cases, events
+        occurring close to a step start were handled without truncating the step, making
+        them appear as is they occurred close to the step end 
+o Fixed a problem with getInterpolatedDerivatives returning zero derivatives when
+        an ODE step handler is configured to not use interpolation. It now returns a
+        constant but non-zero value consistent with at least one point inside the step 
+o MATH-344:  Fixed wrong return values when enpoints are roots in Brent solver with
+        a user provided initial guess 
+o MATH-343:  Fixed a missing bracketing check of initial interval in Brent solver. 
+o MATH-342:  In SVD, the matrices passed to EigenDecomposition are now symmetric
+        by construction (rather than simply by definition).  In EigenDecomposition,
+        once the tridiagonal form is obtained, the non-significant elements are
+        set to 0. 
+o MATH-333:  A EigenDecompositionImpl simplified makes it possible to compute
+        the SVD of a singular matrix (with the right number of elements in
+        the diagonal matrix) or a matrix with singular value(s) of multiplicity
+        greater than 1. 
+o Fixed a spurious exception in EigenDecompositionImpl when a 3x3 block
+        had two identical eigenvalues. 
+o MATH-338:  Fixed automatic step initialization in embedded Runge-Kutta integrators.
+        The relative tolerance setting was never used, only the absolute tolerance
+        was used. Thanks to Vincent Morand. 
+o MATH-329:  Fixed regression in Frequency.getPct(Object) introduced in 2.0. Cumulative
+        percent was being returned for Object arguments in place of percent. 
+o MATH-320:  Fixed Singular Value Decomposition solving of singular systems. 
+o MATH-326:  Fixed a wrong implementation of the Linf norm in vectors. Thanks to Jake Mannix. 
+o MATH-324:  Fixed a convergence discrepancy with respect to theory in Gragg-Bulirsch-Stoer
+        integrator. Thanks to Vincent Morand. 
+o Fixed a wrong dimension check in SVD solver. Thanks to Dimitri Pourbaix. 
+o MATH-313:  Added composition features for real functions. Thanks to Jake Mannix. 
+o MATH-312:  Added mapping and iteration methods to vectors. Provided a default implementation
+        for the numerous simple methods in the RealVectorInterface. Thanks to Jake Mannix. 
+o MATH-322:  Fixed an error in handling very close events in ODE integration. 
+o MATH-305:  Fixed an overflow error in MathUtils.distance that was causing KMeansPlusPlusClusterer
+        to fail with a NullPointerException when component distances between points
+        exceeded Integer.MAXVALUE. Thanks to Erik van Ingen. 
+o MATH-318:  Fixed an index computation error in eigen decomposition. Once again, kudos to Dimitri
+        for debugging this. Thanks to Dimitri Pourbaix. 
+o MATH-308:  Fixed an ArrayIndexOutOfBoundsException in eigen decomposition. Kudos to Dimitri
+        for debugging this, it was really difficult. Thanks to Dimitri Pourbaix. 
+o MATH-309:  Fixed parameter test in RandomDataImpl#nextExponential. The method now throws
+        IllegalArgumentException for mean = 0. Thanks to Mikkel Meyer Andersen. 
+o MATH-306:  Removed dead code from Complex#divide. Thanks to Joerg Huber. 
+o MATH-294:  Fixed implementation of RandomDataImpl#nextPoisson by implementing an alternative
+        algorithm for large means. 
+o MATH-298:  Fixed implementation of EmpiricalDistributionImpl#getUpperBounds to match
+        interface contract.  Added getGeneratorUpperBounds method to
+        EmpiricalDistributionImpl providing previous behavior. 
+o MATH-296:  Fixed wrong results on Loess interpolation, also added a way to set weights
+        for smoothing and to ignore zero weights for coefficients computation Thanks to Eugene Kirpichov. 
+o MATH-293:  Fixed a OutOfBoundException in simplex solver when some constraints are tight. Thanks to Benjamin McCann. 
+o MATH-291:  Fixed misleading number formats in error messages for adaptive
+        stepsize integrators. Thanks to Sebb. 
+o MATH-290:  Fixed a NullPointerException in simplex solver when no solution is possible
+        and some constraints are negative. Thanks to Benjamin McCann. 
+o MATH-289:  Removed an unused argument in a private method in simplex solver. 
+o MATH-288:  Fixed an error induced by entries set to 0 in simplex solver. Thanks to Benjamin McCann. 
+o MATH-286:  Fixed an error leading the simplex solver to compute the right solution
+        but return another one. Thanks to Benjamin McCann. 
+o MATH-283:  Prevent infinite loops in multi-directional direct optimization method when
+        the start point is exactly at the optimal point. Thanks to Michael Nischt. 
+o MATH-297:  Prevent possible zero divides on eigenvectors of indefinite matrices Thanks to Axel Kramer. 
+
+Changes:
+o MATH-356:  Added method to clear the list of observations in CurveFitter. 
+o MATH-332:  Added density functions to remaining continuous distributions (F, T, Weibull, Cauchy).
+        As of Math 2.1, all continuous distributions implement density functions.  The HasDensity
+        interface has been deprecated and in version 3.0, density(double) will be added to the
+        ContinuousDistribution interface. Thanks to Mikkel Meyer Andersen. 
+o MATH-337:  Changed equals() methods to use instanceof check rather than catching ClassCastException;
+        this also allows some null checks to be omitted. 
+o MATH-336:  Removed unnecessary null checks in equals methods. 
+o MATH-239:  Added MathUtils methods to compute gcd and lcm for long arguments. Thanks to Christian Semrau. 
+o MATH-287:  Added support for weighted univariate statistics. Thanks to Matthew Rowles. 
+o MATH-315:  Added generationsEvolved property to GeneticAlgorithm to track the number of generations
+        evolved by the evolve() method before reaching the StoppingCondition. Thanks to Mikkel Meyer Andersen. 
+o MATH-311:  Changed probability calculations for Binomial, Poisson, and Hypergeometric
+        distributions to use Catherine Loader's saddle point approximations. Thanks to Nipun Jawalkar. 
+
+ 
+For complete information on Commons Math, including instructions on how to submit bug reports,
+patches, or suggestions for improvement, see the Apache Commons Math website:
+
+http://commons.apache.org/math/
+
+
diff -r e8ccd518555b -r a705726863bc libs/commons-math-2.1/commons-math-2.1-javadoc.jar
Binary file libs/commons-math-2.1/commons-math-2.1-javadoc.jar has changed
diff -r e8ccd518555b -r a705726863bc libs/commons-math-2.1/commons-math-2.1-sources.jar
Binary file libs/commons-math-2.1/commons-math-2.1-sources.jar has changed
diff -r e8ccd518555b -r a705726863bc libs/commons-math-2.1/commons-math-2.1.jar
Binary file libs/commons-math-2.1/commons-math-2.1.jar has changed