trans_expr.hpp

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//          Copyright RedPortal, mujjingun 2017 - 2018.
// Distributed under the Boost Software License, Version 1.0.
//    (See accompanying file LICENSE or copy at
//          http://www.boost.org/LICENSE_1_0.txt)

#ifndef _MGCPP_TYPE_TRAITS_TRANS_EXPR_HPP_
#define _MGCPP_TYPE_TRAITS_TRANS_EXPR_HPP_

#include <type_traits>

#include <mgcpp/gpu/forward.hpp>
#include <mgcpp/system/concept.hpp>
#include <mgcpp/type_traits/gpu_mat.hpp>
#include <mgcpp/type_traits/recursive_eval.hpp>

namespace mgcpp {
template <typename Expr>
struct is_mat_trans_expr : std::false_type {};

template <typename Expr,
          typename GpuMat,
          MGCPP_CONCEPT(assert_gpu_matrix<GpuMat>)>
struct is_mat_trans_expr<trans<GpuMat>> : std::true_type {};

template <typename... VariadicExpr>
struct assert_mat_trans_expr {
  using result = typename std::enable_if<
      fold_or<is_mat_trans_expr, VariadicExpr...>::value>::type;
};

template <typename T, typename... VariadicExpr>
struct assert_mat_trans_expr_t {
  using result = typename std::
      enable_if<fold_or<is_mat_trans_expr, VariadicExpr...>::value, T>::type;
};

template <typename Expr>
struct assert_mat_trans_expr {
  using result =
      typename std::enable_if<is_mat_trans_expr<Expr>::value>> ::type;
};

}  // namespace mgcpp

#endif