| // This file is part of Eigen, a lightweight C++ template library |
| // for linear algebra. |
| // |
| // Copyright (C) 2020 Sebastien Boisvert <seb@boisvert.info> |
| // |
| // 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 http://mozilla.org/MPL/2.0/. |
| |
| #ifndef EIGEN_MISC_MOVABLE_SCALAR_H |
| #define EIGEN_MISC_MOVABLE_SCALAR_H |
| |
| #include <vector> |
| |
| namespace Eigen { |
| template <typename Scalar, typename Base = std::vector<Scalar>> |
| struct MovableScalar : public Base { |
| MovableScalar() = default; |
| ~MovableScalar() = default; |
| MovableScalar(const MovableScalar&) = default; |
| MovableScalar(MovableScalar&& other) = default; |
| MovableScalar& operator=(const MovableScalar&) = default; |
| MovableScalar& operator=(MovableScalar&& other) = default; |
| MovableScalar(Scalar scalar) : Base(100, scalar) {} |
| |
| operator Scalar() const { return this->size() > 0 ? this->back() : Scalar(); } |
| }; |
| |
| template <typename Scalar> |
| struct NumTraits<MovableScalar<Scalar>> : GenericNumTraits<Scalar> { |
| enum { RequireInitialization = 1 }; |
| }; |
| |
| } // namespace Eigen |
| |
| #endif |
