chromium/third_party/eigen3/src/Eigen/src/Core/NestByValue.h

// This file is part of Eigen, a lightweight C++ template library
// for linear algebra.
//
// Copyright (C) 2008 Gael Guennebaud <[email protected]>
// Copyright (C) 2006-2008 Benoit Jacob <[email protected]>
//
// 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_NESTBYVALUE_H
#define EIGEN_NESTBYVALUE_H

// IWYU pragma: private
#include "./InternalHeaderCheck.h"

namespace Eigen {

namespace internal {
traits<NestByValue<ExpressionType>>;
}  // namespace internal

/** \class NestByValue
 * \ingroup Core_Module
 *
 * \brief Expression which must be nested by value
 *
 * \tparam ExpressionType the type of the object of which we are requiring nesting-by-value
 *
 * This class is the return type of MatrixBase::nestByValue()
 * and most of the time this is the only way it is used.
 *
 * \sa MatrixBase::nestByValue()
 */
template <typename ExpressionType>
class NestByValue : public internal::dense_xpr_base<NestByValue<ExpressionType> >::type { … };

/** \returns an expression of the temporary version of *this.
 */
template <typename Derived>
EIGEN_DEVICE_FUNC inline const NestByValue<Derived> DenseBase<Derived>::nestByValue() const { … }

namespace internal {

// Evaluator of Solve -> eval into a temporary
evaluator<NestByValue<ArgType>>;
}  // namespace internal

}  // end namespace Eigen

#endif  // EIGEN_NESTBYVALUE_H