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

// This file is part of Eigen, a lightweight C++ template library
// for linear algebra.
//
// Copyright (C) 2015 Gael Guennebaud <[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_SOLVERBASE_H
#define EIGEN_SOLVERBASE_H

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

namespace Eigen {

namespace internal {

template <typename Derived>
struct solve_assertion { … };

solve_assertion<Transpose<Derived>>;

solve_assertion<CwiseUnaryOp<Eigen::internal::scalar_conjugate_op<Scalar>, const Transpose<Derived>>>;
}  // end namespace internal

/** \class SolverBase
 * \brief A base class for matrix decomposition and solvers
 *
 * \tparam Derived the actual type of the decomposition/solver.
 *
 * Any matrix decomposition inheriting this base class provide the following API:
 *
 * \code
 * MatrixType A, b, x;
 * DecompositionType dec(A);
 * x = dec.solve(b);             // solve A   * x = b
 * x = dec.transpose().solve(b); // solve A^T * x = b
 * x = dec.adjoint().solve(b);   // solve A'  * x = b
 * \endcode
 *
 * \warning Currently, any other usage of transpose() and adjoint() are not supported and will produce compilation
 * errors.
 *
 * \sa class PartialPivLU, class FullPivLU, class HouseholderQR, class ColPivHouseholderQR, class FullPivHouseholderQR,
 * class CompleteOrthogonalDecomposition, class LLT, class LDLT, class SVDBase
 */
template <typename Derived>
class SolverBase : public EigenBase<Derived> { … };

namespace internal {

generic_xpr_base<Derived, MatrixXpr, SolverStorage>;

}  // end namespace internal

}  // end namespace Eigen

#endif  // EIGEN_SOLVERBASE_H