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Ruben Martinez-Cantin committed a2a2248

Adding nlopt2.4.1

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File nlopt2/AUTHORS

+NLopt was written/packaged by:
+
+Steven G. Johnson <stevenj@alum.mit.edu>
+
+See the subdirectories for the authors of the original nonlinear optimization
+libraries utilized by NLopt.

File nlopt2/COPYING

+NLopt combines several free/open-source nonlinear optimization
+libraries by various authors.  See the COPYING, COPYRIGHT, and README
+files in the subdirectories for the original copyright and licensing
+information of these packages.
+
+The compiled NLopt library, i.e. the combined work of all of the
+included optimization routines, is licensed under the conjunction of
+all of these licensing terms.  Currently, the most restrictive terms
+are for the code in the "luksan" directory, which is licensed under
+the GNU Lesser General Public License (GNU LGPL), version 2.1 or
+later (see luksan/COPYRIGHT).
+
+That means that the compiled NLopt library is governed by the terms of
+the LGPL.
+
+---------------------------------------------------------------------------
+
+Other portions of NLopt, including any modifications to the abovementioned
+packages, are licensed under the standard "MIT License:"
+
+Copyright (c) 2007-2011 Massachusetts Institute of Technology
+
+Permission is hereby granted, free of charge, to any person obtaining
+a copy of this software and associated documentation files (the
+"Software"), to deal in the Software without restriction, including
+without limitation the rights to use, copy, modify, merge, publish,
+distribute, sublicense, and/or sell copies of the Software, and to
+permit persons to whom the Software is furnished to do so, subject to
+the following conditions:
+
+The above copyright notice and this permission notice shall be
+included in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

File nlopt2/ChangeLog

+See https://github.com/stevengj/nlopt for a detailed version history.

File nlopt2/INSTALL

+Installation Instructions
+*************************
+
+Copyright (C) 1994-1996, 1999-2002, 2004-2013 Free Software Foundation,
+Inc.
+
+   Copying and distribution of this file, with or without modification,
+are permitted in any medium without royalty provided the copyright
+notice and this notice are preserved.  This file is offered as-is,
+without warranty of any kind.
+
+Basic Installation
+==================
+
+   Briefly, the shell commands `./configure; make; make install' should
+configure, build, and install this package.  The following
+more-detailed instructions are generic; see the `README' file for
+instructions specific to this package.  Some packages provide this
+`INSTALL' file but do not implement all of the features documented
+below.  The lack of an optional feature in a given package is not
+necessarily a bug.  More recommendations for GNU packages can be found
+in *note Makefile Conventions: (standards)Makefile Conventions.
+
+   The `configure' shell script attempts to guess correct values for
+various system-dependent variables used during compilation.  It uses
+those values to create a `Makefile' in each directory of the package.
+It may also create one or more `.h' files containing system-dependent
+definitions.  Finally, it creates a shell script `config.status' that
+you can run in the future to recreate the current configuration, and a
+file `config.log' containing compiler output (useful mainly for
+debugging `configure').
+
+   It can also use an optional file (typically called `config.cache'
+and enabled with `--cache-file=config.cache' or simply `-C') that saves
+the results of its tests to speed up reconfiguring.  Caching is
+disabled by default to prevent problems with accidental use of stale
+cache files.
+
+   If you need to do unusual things to compile the package, please try
+to figure out how `configure' could check whether to do them, and mail
+diffs or instructions to the address given in the `README' so they can
+be considered for the next release.  If you are using the cache, and at
+some point `config.cache' contains results you don't want to keep, you
+may remove or edit it.
+
+   The file `configure.ac' (or `configure.in') is used to create
+`configure' by a program called `autoconf'.  You need `configure.ac' if
+you want to change it or regenerate `configure' using a newer version
+of `autoconf'.
+
+   The simplest way to compile this package is:
+
+  1. `cd' to the directory containing the package's source code and type
+     `./configure' to configure the package for your system.
+
+     Running `configure' might take a while.  While running, it prints
+     some messages telling which features it is checking for.
+
+  2. Type `make' to compile the package.
+
+  3. Optionally, type `make check' to run any self-tests that come with
+     the package, generally using the just-built uninstalled binaries.
+
+  4. Type `make install' to install the programs and any data files and
+     documentation.  When installing into a prefix owned by root, it is
+     recommended that the package be configured and built as a regular
+     user, and only the `make install' phase executed with root
+     privileges.
+
+  5. Optionally, type `make installcheck' to repeat any self-tests, but
+     this time using the binaries in their final installed location.
+     This target does not install anything.  Running this target as a
+     regular user, particularly if the prior `make install' required
+     root privileges, verifies that the installation completed
+     correctly.
+
+  6. You can remove the program binaries and object files from the
+     source code directory by typing `make clean'.  To also remove the
+     files that `configure' created (so you can compile the package for
+     a different kind of computer), type `make distclean'.  There is
+     also a `make maintainer-clean' target, but that is intended mainly
+     for the package's developers.  If you use it, you may have to get
+     all sorts of other programs in order to regenerate files that came
+     with the distribution.
+
+  7. Often, you can also type `make uninstall' to remove the installed
+     files again.  In practice, not all packages have tested that
+     uninstallation works correctly, even though it is required by the
+     GNU Coding Standards.
+
+  8. Some packages, particularly those that use Automake, provide `make
+     distcheck', which can by used by developers to test that all other
+     targets like `make install' and `make uninstall' work correctly.
+     This target is generally not run by end users.
+
+Compilers and Options
+=====================
+
+   Some systems require unusual options for compilation or linking that
+the `configure' script does not know about.  Run `./configure --help'
+for details on some of the pertinent environment variables.
+
+   You can give `configure' initial values for configuration parameters
+by setting variables in the command line or in the environment.  Here
+is an example:
+
+     ./configure CC=c99 CFLAGS=-g LIBS=-lposix
+
+   *Note Defining Variables::, for more details.
+
+Compiling For Multiple Architectures
+====================================
+
+   You can compile the package for more than one kind of computer at the
+same time, by placing the object files for each architecture in their
+own directory.  To do this, you can use GNU `make'.  `cd' to the
+directory where you want the object files and executables to go and run
+the `configure' script.  `configure' automatically checks for the
+source code in the directory that `configure' is in and in `..'.  This
+is known as a "VPATH" build.
+
+   With a non-GNU `make', it is safer to compile the package for one
+architecture at a time in the source code directory.  After you have
+installed the package for one architecture, use `make distclean' before
+reconfiguring for another architecture.
+
+   On MacOS X 10.5 and later systems, you can create libraries and
+executables that work on multiple system types--known as "fat" or
+"universal" binaries--by specifying multiple `-arch' options to the
+compiler but only a single `-arch' option to the preprocessor.  Like
+this:
+
+     ./configure CC="gcc -arch i386 -arch x86_64 -arch ppc -arch ppc64" \
+                 CXX="g++ -arch i386 -arch x86_64 -arch ppc -arch ppc64" \
+                 CPP="gcc -E" CXXCPP="g++ -E"
+
+   This is not guaranteed to produce working output in all cases, you
+may have to build one architecture at a time and combine the results
+using the `lipo' tool if you have problems.
+
+Installation Names
+==================
+
+   By default, `make install' installs the package's commands under
+`/usr/local/bin', include files under `/usr/local/include', etc.  You
+can specify an installation prefix other than `/usr/local' by giving
+`configure' the option `--prefix=PREFIX', where PREFIX must be an
+absolute file name.
+
+   You can specify separate installation prefixes for
+architecture-specific files and architecture-independent files.  If you
+pass the option `--exec-prefix=PREFIX' to `configure', the package uses
+PREFIX as the prefix for installing programs and libraries.
+Documentation and other data files still use the regular prefix.
+
+   In addition, if you use an unusual directory layout you can give
+options like `--bindir=DIR' to specify different values for particular
+kinds of files.  Run `configure --help' for a list of the directories
+you can set and what kinds of files go in them.  In general, the
+default for these options is expressed in terms of `${prefix}', so that
+specifying just `--prefix' will affect all of the other directory
+specifications that were not explicitly provided.
+
+   The most portable way to affect installation locations is to pass the
+correct locations to `configure'; however, many packages provide one or
+both of the following shortcuts of passing variable assignments to the
+`make install' command line to change installation locations without
+having to reconfigure or recompile.
+
+   The first method involves providing an override variable for each
+affected directory.  For example, `make install
+prefix=/alternate/directory' will choose an alternate location for all
+directory configuration variables that were expressed in terms of
+`${prefix}'.  Any directories that were specified during `configure',
+but not in terms of `${prefix}', must each be overridden at install
+time for the entire installation to be relocated.  The approach of
+makefile variable overrides for each directory variable is required by
+the GNU Coding Standards, and ideally causes no recompilation.
+However, some platforms have known limitations with the semantics of
+shared libraries that end up requiring recompilation when using this
+method, particularly noticeable in packages that use GNU Libtool.
+
+   The second method involves providing the `DESTDIR' variable.  For
+example, `make install DESTDIR=/alternate/directory' will prepend
+`/alternate/directory' before all installation names.  The approach of
+`DESTDIR' overrides is not required by the GNU Coding Standards, and
+does not work on platforms that have drive letters.  On the other hand,
+it does better at avoiding recompilation issues, and works well even
+when some directory options were not specified in terms of `${prefix}'
+at `configure' time.
+
+Optional Features
+=================
+
+   If the package supports it, you can cause programs to be installed
+with an extra prefix or suffix on their names by giving `configure' the
+option `--program-prefix=PREFIX' or `--program-suffix=SUFFIX'.
+
+   Some packages pay attention to `--enable-FEATURE' options to
+`configure', where FEATURE indicates an optional part of the package.
+They may also pay attention to `--with-PACKAGE' options, where PACKAGE
+is something like `gnu-as' or `x' (for the X Window System).  The
+`README' should mention any `--enable-' and `--with-' options that the
+package recognizes.
+
+   For packages that use the X Window System, `configure' can usually
+find the X include and library files automatically, but if it doesn't,
+you can use the `configure' options `--x-includes=DIR' and
+`--x-libraries=DIR' to specify their locations.
+
+   Some packages offer the ability to configure how verbose the
+execution of `make' will be.  For these packages, running `./configure
+--enable-silent-rules' sets the default to minimal output, which can be
+overridden with `make V=1'; while running `./configure
+--disable-silent-rules' sets the default to verbose, which can be
+overridden with `make V=0'.
+
+Particular systems
+==================
+
+   On HP-UX, the default C compiler is not ANSI C compatible.  If GNU
+CC is not installed, it is recommended to use the following options in
+order to use an ANSI C compiler:
+
+     ./configure CC="cc -Ae -D_XOPEN_SOURCE=500"
+
+and if that doesn't work, install pre-built binaries of GCC for HP-UX.
+
+   HP-UX `make' updates targets which have the same time stamps as
+their prerequisites, which makes it generally unusable when shipped
+generated files such as `configure' are involved.  Use GNU `make'
+instead.
+
+   On OSF/1 a.k.a. Tru64, some versions of the default C compiler cannot
+parse its `<wchar.h>' header file.  The option `-nodtk' can be used as
+a workaround.  If GNU CC is not installed, it is therefore recommended
+to try
+
+     ./configure CC="cc"
+
+and if that doesn't work, try
+
+     ./configure CC="cc -nodtk"
+
+   On Solaris, don't put `/usr/ucb' early in your `PATH'.  This
+directory contains several dysfunctional programs; working variants of
+these programs are available in `/usr/bin'.  So, if you need `/usr/ucb'
+in your `PATH', put it _after_ `/usr/bin'.
+
+   On Haiku, software installed for all users goes in `/boot/common',
+not `/usr/local'.  It is recommended to use the following options:
+
+     ./configure --prefix=/boot/common
+
+Specifying the System Type
+==========================
+
+   There may be some features `configure' cannot figure out
+automatically, but needs to determine by the type of machine the package
+will run on.  Usually, assuming the package is built to be run on the
+_same_ architectures, `configure' can figure that out, but if it prints
+a message saying it cannot guess the machine type, give it the
+`--build=TYPE' option.  TYPE can either be a short name for the system
+type, such as `sun4', or a canonical name which has the form:
+
+     CPU-COMPANY-SYSTEM
+
+where SYSTEM can have one of these forms:
+
+     OS
+     KERNEL-OS
+
+   See the file `config.sub' for the possible values of each field.  If
+`config.sub' isn't included in this package, then this package doesn't
+need to know the machine type.
+
+   If you are _building_ compiler tools for cross-compiling, you should
+use the option `--target=TYPE' to select the type of system they will
+produce code for.
+
+   If you want to _use_ a cross compiler, that generates code for a
+platform different from the build platform, you should specify the
+"host" platform (i.e., that on which the generated programs will
+eventually be run) with `--host=TYPE'.
+
+Sharing Defaults
+================
+
+   If you want to set default values for `configure' scripts to share,
+you can create a site shell script called `config.site' that gives
+default values for variables like `CC', `cache_file', and `prefix'.
+`configure' looks for `PREFIX/share/config.site' if it exists, then
+`PREFIX/etc/config.site' if it exists.  Or, you can set the
+`CONFIG_SITE' environment variable to the location of the site script.
+A warning: not all `configure' scripts look for a site script.
+
+Defining Variables
+==================
+
+   Variables not defined in a site shell script can be set in the
+environment passed to `configure'.  However, some packages may run
+configure again during the build, and the customized values of these
+variables may be lost.  In order to avoid this problem, you should set
+them in the `configure' command line, using `VAR=value'.  For example:
+
+     ./configure CC=/usr/local2/bin/gcc
+
+causes the specified `gcc' to be used as the C compiler (unless it is
+overridden in the site shell script).
+
+Unfortunately, this technique does not work for `CONFIG_SHELL' due to
+an Autoconf limitation.  Until the limitation is lifted, you can use
+this workaround:
+
+     CONFIG_SHELL=/bin/bash ./configure CONFIG_SHELL=/bin/bash
+
+`configure' Invocation
+======================
+
+   `configure' recognizes the following options to control how it
+operates.
+
+`--help'
+`-h'
+     Print a summary of all of the options to `configure', and exit.
+
+`--help=short'
+`--help=recursive'
+     Print a summary of the options unique to this package's
+     `configure', and exit.  The `short' variant lists options used
+     only in the top level, while the `recursive' variant lists options
+     also present in any nested packages.
+
+`--version'
+`-V'
+     Print the version of Autoconf used to generate the `configure'
+     script, and exit.
+
+`--cache-file=FILE'
+     Enable the cache: use and save the results of the tests in FILE,
+     traditionally `config.cache'.  FILE defaults to `/dev/null' to
+     disable caching.
+
+`--config-cache'
+`-C'
+     Alias for `--cache-file=config.cache'.
+
+`--quiet'
+`--silent'
+`-q'
+     Do not print messages saying which checks are being made.  To
+     suppress all normal output, redirect it to `/dev/null' (any error
+     messages will still be shown).
+
+`--srcdir=DIR'
+     Look for the package's source code in directory DIR.  Usually
+     `configure' can determine that directory automatically.
+
+`--prefix=DIR'
+     Use DIR as the installation prefix.  *note Installation Names::
+     for more details, including other options available for fine-tuning
+     the installation locations.
+
+`--no-create'
+`-n'
+     Run the configure checks, but stop before creating any output
+     files.
+
+`configure' also accepts some other, not widely useful, options.  Run
+`configure --help' for more details.

File nlopt2/Makefile.am

+OPTIONS_AUTOMAKE=gnu
+lib_LTLIBRARIES = libnlopt@NLOPT_SUFFIX@.la
+
+ACLOCAL_AMFLAGS=-I m4
+
+if WITH_CXX
+CXX_DIRS = stogo
+CXX_LIBS = stogo/libstogo.la
+endif
+
+SUBDIRS = util direct cdirect $(CXX_DIRS) praxis luksan crs mlsl mma cobyla newuoa neldermead auglag bobyqa isres slsqp esch api . octave test swig
+EXTRA_DIST = autogen.sh nlopt.pc.in m4
+
+libnlopt@NLOPT_SUFFIX@_la_SOURCES = 
+libnlopt@NLOPT_SUFFIX@_la_LIBADD = direct/libdirect.la			\
+cdirect/libcdirect.la $(CXX_LIBS) praxis/libpraxis.la \
+luksan/libluksan.la crs/libcrs.la mlsl/libmlsl.la mma/libmma.la		\
+cobyla/libcobyla.la newuoa/libnewuoa.la neldermead/libneldermead.la	\
+auglag/libauglag.la bobyqa/libbobyqa.la isres/libisres.la		\
+slsqp/libslsqp.la esch/libesch.la api/libapi.la util/libutil.la
+
+if WITH_CXX
+libnlopt@NLOPT_SUFFIX@_la_LDFLAGS = -version-info @SHARED_VERSION_INFO@
+else
+libnlopt@NLOPT_SUFFIX@_la_LDFLAGS = -no-undefined -version-info @SHARED_VERSION_INFO@
+endif
+
+pkgconfigdir = $(libdir)/pkgconfig
+pkgconfig_DATA = nlopt.pc
+
+if MAINTAINER_MODE
+
+README: README.md
+	cp -f $(srcdir)/README.md $@
+
+endif

File nlopt2/Makefile.in

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+# This program is distributed in the hope that it will be useful,
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+
+# Tell versions [3.59,3.63) of GNU make to not export all variables.
+# Otherwise a system limit (for SysV at least) may be exceeded.
+.NOEXPORT:
+NLopt 2.4.1 (19 November 2013)
+
+* Use cdecl calling convention instead of stdcall on Win32, to
+  simplify shared-library usage and for consistency with Win64.
+
+NLopt 2.4 (2 November 2013)
+
+* New genetic algorithm ESCH, thanks to Carlos Henrique da Silva Santos.
+
+* Fix swig dir for VPATH builds, thanks to Sandro Vitenti for the bug report.
+
+* Use python-config program in the configure script to find the include
+  directories for Python, if possible (may be overridden by PYTHON_CONFIG
+  environment variable).
+
+* Bugfix in copy constructor for C++ and Python interfaces.
+
+* Bugfix in return value for setting min/max objective.
+
+* Handle negative rescalings in COBYLA and BOBYQA.
+
+* Plugin installation honors the configure --prefix, if any
+  (thanks to xantares@github).
+
+* Various compilation fixes for compatibility with recent software.
+
+NLopt 2.3.1 (16 September 2012)
+
+* Bug fix: COBLYA should return ROUNDOFF_LIMITED rather than XTOL_REACHED
+  if the trust-region radius underflows to zero; thanks to David Liu.
+
+* Bug fix: incorrect return value from set min/max objective.
+
+* Handle case of negative rescalings (from negative dx) in COBYLA and BOBYQA;
+  thanks to Alexander Law for the bug report
+
+NLopt 2.3 (20 July 2012)
+
+* In Matlab/Octave interface, make returning NaN from the objective
+  equivalent to nlopt_force_stop; thanks to Norman Violet for the suggestion.
+
+* Added CCSA-quadratic (NLOPT_LD_CCSAQ), similar to MMA.
+
+* Added interface for supplying a preconditioner (approximate Hessian);
+  currently only supported in CCSAQ.
+
+* When adding mconstraints, allow tol==NULL as synonym for zero tolerances.
+
+* Added missing NLOPT_LD_SLSQP constant in Matlab/Octave.
+
+* Lower tolerance for dual optimization in MMA/CCSAQ; thanks to
+  Christophe Leruste for the problem report
+
+* Fixed bug in timer, thanks to William Vaughn for the patch.
+
+* Bug fix to convergence test in sbplx; thanks to Douglas Bates.
+
+NLopt 2.2.4 (9 June 2011)
+
+* Fixed linking problem for C++ and Python shared libraries on MacOS X;
+  thanks to Volker Lorrmann for the bug report.
+
+NLopt 2.2.3 (8 June 2011)
+
+* Fixed additional re-entrancy problem in Luksan algorithms missed
+  in the previous version; thanks to Gert Wollny for the bug report.
+
+* Fixed set/get vector_storage in Fortran interface for Fortran
+  compilers with all-uppercase linkage.
+
+NLopt 2.2.2 (26 May 2011)
+
+* Added set_vector_storage API to modify the memory usage and the 
+  subspace dimension for low-storage quasi-Newton methods.
+
+* Fixed missing support for maxtime stopping criteria in Luksan and
+  ORIG_DIRECT algorithms; thanks to Jurgen Werner for the bug report.
+
+* Fixed algorithms to support the case where the lower and upper bounds
+  are equal for some variables (which effectively eliminates those
+  variables from optimization).
+
+* Added missing xtol check to SLSQP, which caused erroneous ROUNDOFF_LIMITED
+  error codes to be returned; thanks to Alexander Riess for the bug report.
+
+* Fixed slight overcounting of function evaluations for maxeval check
+  in SLSQP.
+
+* Fixed deprecated API to support xtol_abs == NULL for backward
+  compatibility (thanks to Francesco Biscani for the bug report).
+
+* Made Luksan algorithms (e.g. LBFGS and other quasi-Newton methods)
+  re-entrant; thanks to Gert Wollny for the bug report.  (Fixes
+  Gentoo bug #368685.)
+
+* Fixed bug in DIRECT (not ORIG_DIRECT), where a typo caused suboptimal
+  convergence in some cases; thanks to Sinisa Hristov for the bug report.
+
+NLopt 2.2.1 (6 September 2010)
+
+* If you compile nlopt.h with the NLOPT_DLL_EXPORT symbol #defined,
+  it now uses the dllexport directive (under Windows), useful for
+  compiling an NLopt DLL under Microsoft compilers; thanks to Benoit
+  Scherrer for the suggestion.
+
+* Handle case where copysign function is missing, e.g. on Windows;
+  thanks to Benoit Scherrer for the bug report.
+
+* Remove C99-style mixed declaration and code in a couple files, so
+  that code compiles in C89; thanks to Benoit Scherrer for the bug report.
+
+* Removed a few compiler warnings under Microsoft compilers; thanks
+  to Benoit Scherrer for the bug report.
+
+* Export nlopt_get_algorithm_name function on Windows; thanks to Ofek
+  Shilon for the bug report.
+
+* Don't use dllimport directive with lcc on Windows (which doesn't
+  support it); thanks to Laurent Vanbeylen for the bug report.
+
+* Update Nodedal README directory to indicate that Nocedal's LBFGS code
+  is now available under the GPL, and therefore may be distributed with
+  a future NLopt version (although Luksan's LBFGS code already works well).
+
+* Bug fix in set/get_xtol_abs; thanks to David Rivest-Henault for the report.
+
+NLopt 2.2 (15 July 2010)
+
+* Added SLSQP algorithm for gradient-based local optimization with
+  nonlinear constraints via sequential quadratic programming, based
+  on the implementation by Dieter Kraft that was adapted for SciPy.
+
+* Modified BOBYQA and COBYLA algorithms to support unequal initial
+  step sizes in different directions; thanks to Tom Fiddaman for pointing
+  out the need for this in the case where different directions have
+  very different scales.
+
+* Added Python module docstring; thanks to Sebastian Walter for the suggestion.
+
+* Added GUILE_INSTALL_DIR variable to allow the user to change the
+  Guile installation directory.
+
+* Added Fortran interface for vector-valued constraints.
+
+* Throw correct exceptions in Python for the add_*constraint functions;
+  thanks to Dmitrey Kroshko for the bug report.
+
+* Support forced stop and exceptions in ORIG_DIRECT algorithm.
+
+* Remove arbitrary 1e20 upper bound on function values from ORIG_DIRECT
+  code.
+
+* Bugfix in C++ interface (and some other language front-ends) when
+  deallocating the nlopt_opt object in cases like MLSL where
+  local_optimizer is used; thanks to Jurgen Werner for the bug report.
+
+NLopt 2.1.2 (8 July 2010)
+
+* The Python mconstraint (vector-valued constraint) functions
+  now pass a 2-dimensional array for the gradient argument, rather
+  than a flattened 1d array.
+
+* Improved handling of exceptions and forced stops for constrained
+  optimization, making sure that no constraints are evaluated after
+  the stop.
+
+* Return an NLOPT_INVALID_ARGS error if more than n equality constraints
+  are added in an n-dimensional problem.
+
+* Fix bug that could cause spurious NLOPT_INVALID_ARGS errors when
+  adding constraints under rare circumstances.
+
+* Eliminate a few small memory leaks that could occur under error conditions.
+
+NLopt 2.1.1 (7 July 2010)
+
+* More robust configure check for Python include directories, via
+  distutils.sysconfig.get_python_inc() and numpy.get_include().
+  Thanks to Nathaniel Smith for the tip.
+
+* Bug fix in Guile interface: added missing prefix to nlopt-version-major
+  etcetera.
+
+NLopt 2.1 (6 July 2010)
+
+* New vector-valued constraint feature; thanks to Dmitrey Kroshko of OpenOpt
+  for the suggestion.
+
+* COBYLA now accepts equality constraints.
+
+* Guard against multiple inclusion in nlopt.hpp; thanks to Saul
+  Thurrowgood for the suggestion.
+
+NLopt 2.0.2 (17 June 2010)
+
+* Fixed compilation failure in Microsoft Visual Studio, due to
+  incorrect usage of __stdcall keyword; thanks to Dave Katz for the
+  bug report.
+
+NLopt 2.0.1 (16 June 2010)
+
+* Bug fix in Fortran API (for nlo_get_ functions returning arrays).
+
+* Fixed buggy compilation with MinGW.
+
+NLopt 2.0 (15 June 2010)
+
+* New C API, that works by creating an nlopt_opt "object" and then calling
+  functions to set the optimization parameters -- much more extensible
+  than the old API (which is preserved for backwards compatibility).
+  (Updated Fortran, Matlab, and GNU Octave wrappers as well.)
+
+* C++ nlopt.hpp wrapper around C API, allowing namespaces, object
+  constructors/destructors, std::vector<double>, and exceptions
+  to be exploited.
+
+* New nlopt wrappers callable from Python and GNU Guile, generated
+  with the help of SWIG.
+
+* New 'man nlopt' manual page documenting new API.
+
+* New AUGLAG algorithm(s) implementing an augmented-Lagrangian method
+  proposed by Birgin and Martinez (2008), which supports nonlinear
+  equality and inequality constraints "wrapped around" other
+  local/global optimization methods.
+
+* Added API for nonlinear equality constraints (currently only
+  supported by AUGLAG and ISRES algorithms).
+
+* Support inequality constraints directly in ORIG_DIRECT algorithms
+  (no need to return NaN when constraint is violated).
+
+* Inequality/equality constraints now have optional tolerances that
+  are used as conditions in stopping criteria.
+
+* Pseudo-randomize simplex steps in COBYLA algorithm, improving robustness
+  by avoiding accidentally taking steps that don't improve conditioning
+  (which seems to happen sometimes with active bound constraints).  The
+  algorithm remains deterministic (a deterministic seed is used), however.
+
+* Allow COBYLA to increase the trust-region radius if the predicted improvement
+  was approximately right and the simplex is OK, following a suggestion
+  in the SAS manual for PROC NLP that seems to improve convergence speed.
+
+* Added nlopt_force_stop function to force a (graceful) halt to
+  the optimization, and corresponding NLOPT_FORCED_STOP return code.
+
+* Improved thread-safety in random-number generation: thread-local
+  storage is used for random-number state, on compilers that support
+  it (e.g. gcc, Intel, Microsoft), to make the generation thread-safe.
+  In this case, the random-number seed must be set per-thread.
+
+* Return an error in global-search algorithms if the domain is not finite.
+
+* Use stdcall convention on Windows; thanks to Alan Young for the suggestion.
+
+* Added missing absolute-tolerance criteria in Luksan algorithms; thanks
+  to Greg Nicholas for the bug report.
+
+* Fixed compilation under C++, and use C++ compiler for everything in
+  --with-cxx mode; thanks to Greg Nicholas for the bug report.
+
+* In MMA, only stop at minf_max/stopval if the point is feasible.
+
+* Fix Matlab mex file to not include unnecessary nlopt-util.h file,
+  simplifying Windows compilation.
+
+NLopt 1.2 (18 November 2009)
+
+* Added Powell's BOBYQA algorithm for box-constrained optimization
+  without derivatives, an improvement on NEWUOA.
+
+* Added ISRES genetic algorithm, supporting nonlinearly constrained
+  global optimization.
+
+* New functions nlopt_{set/get}_stochastic_population to provide
+  optional greater control over the random "population" sizes in
+  stochastic algorithms (although it still has a sensible default).
+
+* Bug fix: remove extraneous text accidentally included in nlopt.f Fortran
+  include file.
+
+* Bug fix: configure script now correctly handles Matlab installation
+  when MEX_INSTALL_DIR is specified manually by the user.
+
+NLopt 1.1 (12 November 2009)
+
+* configure script detects whether --enable-shared is required
+  in order to compile Matlab and Octave plugins (as is the case
+  on x86_64), and disables compilation of those plugins if
+  --enable-shared is not used.
+
+* Added --without-octave and --without-matlab configure options to
+  disable Octave and Matlab plugins, respectively.
+
+* Modified COBYLA algorithm to have better support for bound
+  constraints.
+
+* Added new NLOPT_ROUNDOFF_LIMITED failure code to indicate
+  cases in which optimization breaks down due to roundoff errors,
+  in which case it is possible that useful results were obtained.
+
+* Experimental support for nonlinear equality constraints via
+  augmented-Lagrangian method.
+
+* Support for compiling under Windows (ideally with MinGW) as a 
+  DLL, although you have to manually add #define NLOPT_DLL
+  to nlopt.h *after* installing (after compiling NLopt).
+
+* Added several checks for roundoff-related breakdown to NEWUOA code.
+
+* When only a relative error tolerance is specified, no longer
+  fails to halt when exact convergence to zero is obtained.
+
+* Workaround for incompatible qsort_r functions in BSD and GNU libc
+  by always using my own version; thanks to Wendy Vandoolaeghe
+  and Philippe Preux for the bug report and explanation.
+
+* Workaround for gcc 3.4.x conflict with HUGE_VAL definition in Solaris
+  (gcc bug 19933).
+
+* Better identification of Matlab-plugin installation directory.
+
+* Fixed identification of Octave-plugin installation directory for
+  recent Octave versions.
+
+NLopt 1.0.1 (13 Nov. 2008)
+
+* Allow user to override Matlab-plugin installation directory with
+  MEX_INSTALL_DIR.
+
+* Bug fix in my DIRECT code that prevented convergence (DIRECT-L unaffected).
+
+* MLSL needs a nonzero default ftol_rel and/or xtol_rel to ensure that
+  its local searches terminate; use roughly machine precision as defaults.
+
+NLopt 1.0 (11 Nov. 2008)
+
+* Initial public release.

File nlopt2/README

+NLopt is a library for nonlinear local and global optimization, for
+functions with and without gradient information.  It is designed as
+as simple, unified interface and packaging of several free/open-source
+nonlinear optimization libraries.
+
+The latest release and a complete manual may be found at the NLopt
+home page: http://ab-initio.mit.edu/nlopt
+
+It is compiled and installed with the standard GNU autoconf/automake
+commands:
+
+    ./configure
+    make
+    make install
+
+See `./configure --help` or the `INSTALL` file for other options.  To
+build the latest development sources:
+
+    git clone git://github.com/stevengj/nlopt
+    cd nlopt
+    sh autogen.sh
+    make
+
+(To build from git, you will need GNU autoconf, automake, and libtool
+installed, along with SWIG and Unix tools such as m4, perl, and sed.)
+
+Once it is installed, `#include <nlopt.h>` in your C/C++ programs and
+link it with `-lnlopt -lm`.  You may need to use the C++ compiler to link
+in order to include the C++ libraries (which are used internally by NLopt,
+even though it has a C API).
+
+The minimization function, `nlopt_minimize`, is described in the [man
+page](http://en.wikipedia.org/wiki/Man_page) (`api/nlopt_minimize.3`,
+which is installed by `make install`.  See also the manual on our
+web page.
+
+There are also interfaces for Fortran, Python, Matlab, Octave, OCaml,
+GNU Guile, GNU R, Lua, and Julia.  Interfaces for other languages may
+be added in the future.
+Add nonlinearly constrained multistart algorithm.
+
+Add option to control subspace size (mf) in LBFGS etcetera.
+
+STOGO has bitrotted - doesn't return proper NLopt codes, doesn't
+support forced stop, etcetera.  Needs to be fixed.
+
+If local_optimizer is set, STOGO should use it instead of its
+own BFGS.
+
+Wrappers for GNU R, Java, Perl, Ocaml, C#, ...

File nlopt2/aclocal.m4

+# generated automatically by aclocal 1.14 -*- Autoconf -*-
+
+# Copyright (C) 1996-2013 Free Software Foundation, Inc.
+
+# This file is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY, to the extent permitted by law; without
+# even the implied warranty of MERCHANTABILITY or FITNESS FOR A
+# PARTICULAR PURPOSE.