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// This file is part of Eigen, a lightweight C++ template library
// for linear algebra.
// Copyright (C) 2009 Thomas Capricelli <>
// This Source Code Form is subject to the terms of the Mozilla
// Public License v. 2.0. If a copy of the MPL was not distributed
// with this file, You can obtain one at
#include <Eigen/Core>
namespace Eigen {
* \defgroup NumericalDiff_Module Numerical differentiation module
* \code
* #include <unsupported/Eigen/NumericalDiff>
* \endcode
* See
* Warning : this should NOT be confused with automatic differentiation, which
* is a different method and has its own module in Eigen : \ref
* AutoDiff_Module.
* Currently only "Forward" and "Central" schemes are implemented. Those
* are basic methods, and there exist some more elaborated way of
* computing such approximates. They are implemented using both
* proprietary and free software, and usually requires linking to an
* external library. It is very easy for you to write a functor
* using such software, and the purpose is quite orthogonal to what we
* want to achieve with Eigen.
* This is why we will not provide wrappers for every great numerical
* differentiation software that exist, but should rather stick with those
* basic ones, that still are useful for testing.
* Also, the \ref NonLinearOptimization_Module needs this in order to
* provide full features compatibility with the original (c)minpack
* package.
#include "src/NumericalDiff/NumericalDiff.h"