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// Ceres Solver - A fast non-linear least squares minimizer
// Copyright 2015 Google Inc. All rights reserved.
// http://ceres-solver.org/
//
// 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.
// * Neither the name of Google Inc. 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.
//
// Author: sameeragarwal@google.com (Sameer Agarwal)
#ifndef CERES_INTERNAL_EIGEN_H_
#define CERES_INTERNAL_EIGEN_H_
#include "Eigen/Core"
namespace ceres {
typedef Eigen::Matrix<double, Eigen::Dynamic, 1> Vector;
typedef Eigen::Matrix<double, Eigen::Dynamic, Eigen::Dynamic, Eigen::RowMajor>
Matrix;
typedef Eigen::Map<Vector> VectorRef;
typedef Eigen::Map<Matrix> MatrixRef;
typedef Eigen::Map<const Vector> ConstVectorRef;
typedef Eigen::Map<const Matrix> ConstMatrixRef;
// Column major matrices for DenseSparseMatrix/DenseQRSolver
typedef Eigen::Matrix<double, Eigen::Dynamic, Eigen::Dynamic, Eigen::ColMajor>
ColMajorMatrix;
typedef Eigen::Map<ColMajorMatrix, 0, Eigen::Stride<Eigen::Dynamic, 1>>
ColMajorMatrixRef;
typedef Eigen::Map<const ColMajorMatrix, 0, Eigen::Stride<Eigen::Dynamic, 1>>
ConstColMajorMatrixRef;
// C++ does not support templated typdefs, thus the need for this
// struct so that we can support statically sized Matrix and Maps.
template <int num_rows = Eigen::Dynamic, int num_cols = Eigen::Dynamic>
struct EigenTypes {
typedef Eigen::Matrix<double,
num_rows,
num_cols,
num_cols == 1 ? Eigen::ColMajor : Eigen::RowMajor>
Matrix;
typedef Eigen::Map<Matrix> MatrixRef;
typedef Eigen::Map<const Matrix> ConstMatrixRef;
typedef Eigen::Matrix<double, num_rows, 1> Vector;
typedef Eigen::Map<Eigen::Matrix<double, num_rows, 1>> VectorRef;
typedef Eigen::Map<const Eigen::Matrix<double, num_rows, 1>> ConstVectorRef;
};
} // namespace ceres
#endif // CERES_INTERNAL_EIGEN_H_
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