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39cbd6578f
$ clang++ -O3 bench/bench_move_semantics.cpp -I. -std=c++11 \
-o bench_move_semantics
$ ./bench_move_semantics
float copy semantics: 1755.97 ms
float move semantics: 55.063 ms
double copy semantics: 2457.65 ms
double move semantics: 55.034 ms
36 lines
1.1 KiB
C++
36 lines
1.1 KiB
C++
// This file is part of Eigen, a lightweight C++ template library
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// for linear algebra.
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//
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// Copyright (C) 2020 Sebastien Boisvert <seb@boisvert.info>
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//
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// This Source Code Form is subject to the terms of the Mozilla
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// Public License v. 2.0. If a copy of the MPL was not distributed
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// with this file, You can obtain one at http://mozilla.org/MPL/2.0/.
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#ifndef EIGEN_MISC_MOVABLE_SCALAR_H
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#define EIGEN_MISC_MOVABLE_SCALAR_H
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#include <vector>
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namespace Eigen
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{
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template <typename Scalar, typename Base = std::vector<Scalar>>
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struct MovableScalar : public Base
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{
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MovableScalar() = default;
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~MovableScalar() = default;
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MovableScalar(const MovableScalar&) = default;
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MovableScalar(MovableScalar&& other) = default;
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MovableScalar& operator=(const MovableScalar&) = default;
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MovableScalar& operator=(MovableScalar&& other) = default;
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MovableScalar(Scalar scalar) : Base(100, scalar) {}
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operator Scalar() const { return this->size() > 0 ? this->back() : Scalar(); }
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};
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template<> struct NumTraits<MovableScalar<float>> : GenericNumTraits<float> {};
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}
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#endif
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