/*
//@HEADER
// ************************************************************************
//
// qr_solve_base.hpp
//                     		  Pressio
//                             Copyright 2019
//    National Technology & Engineering Solutions of Sandia, LLC (NTESS)
//
// Under the terms of Contract DE-NA0003525 with NTESS, the
// U.S. Government retains certain rights in this software.
//
// Pressio is licensed under BSD-3-Clause terms of use:
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions
// are met:
//
// 1. Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
//
// 2. 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.
//
// 3. Neither the name of the copyright holder 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 HOLDER 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.
//
// Questions? Contact Francesco Rizzi (fnrizzi@sandia.gov)
//
// ************************************************************************
//@HEADER
*/

#ifndef QR_BASE_QR_SOLVE_BASE_HPP_
#define QR_BASE_QR_SOLVE_BASE_HPP_

namespace pressio{ namespace qr{

template<typename derived_t>
class QRSolveBase
  : private utils::details::CrtpBase<
  QRSolveBase<derived_t> >
{

  using this_t = QRSolveBase<derived_t>;

  /* workaround for nvcc issue with templates, see https://devtalk.nvidia.com/default/topic/1037721/nvcc-compilation-error-with-template-parameter-as-a-friend-within-a-namespace/ */
  template<typename DummyType> struct dummy{using type = DummyType;};
  friend typename dummy<derived_t>::type;

  friend utils::details::CrtpBase<this_t>;

public:
  template <typename vec_t>
  ::pressio::mpl::enable_if_t< containers::predicates::is_vector_wrapper<vec_t>::value >
  solve(const vec_t & rhs, vec_t & y)const {
    this->underlying().solveImpl(rhs, y);
  }

private:
  QRSolveBase() = default;
  ~QRSolveBase() = default;

};

}}//end namespace pressio::qr
#endif  // QR_BASE_QR_SOLVE_BASE_HPP_
