// SPDX-License-Identifier: Apache-2.0
//
// Copyright 2008-2016 Conrad Sanderson (http://conradsanderson.id.au)
// Copyright 2008-2016 National ICT Australia (NICTA)
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
// ------------------------------------------------------------------------

//! \addtogroup glue_mixed
//! @{

//! matrix multiplication with different element types
template <typename T1, typename T2>
inline void glue_mixed_times::apply(
    Mat<typename eT_promoter<T1, T2>::eT>& out,
    const mtGlue<typename eT_promoter<T1, T2>::eT, T1, T2, glue_mixed_times>& X) {
  arma_debug_sigprint();

  typedef typename T1::elem_type in_eT1;
  typedef typename T2::elem_type in_eT2;

  typedef typename eT_promoter<T1, T2>::eT out_eT;

  const partial_unwrap<T1> tmp1(X.A);
  const partial_unwrap<T2> tmp2(X.B);

  const typename partial_unwrap<T1>::stored_type& A = tmp1.M;
  const typename partial_unwrap<T2>::stored_type& B = tmp2.M;

  constexpr bool use_alpha = partial_unwrap<T1>::do_times || partial_unwrap<T2>::do_times;
  const out_eT alpha = use_alpha ? (upgrade_val<in_eT1, in_eT2>::apply(tmp1.get_val()) *
                                    upgrade_val<in_eT1, in_eT2>::apply(tmp2.get_val()))
                                 : out_eT(0);

  const bool do_trans_A = partial_unwrap<T1>::do_trans;
  const bool do_trans_B = partial_unwrap<T2>::do_trans;

  arma_conform_assert_trans_mul_size<do_trans_A, do_trans_B>(
      A.n_rows, A.n_cols, B.n_rows, B.n_cols, "matrix multiplication");

  const uword out_n_rows = (do_trans_A == false) ? A.n_rows : A.n_cols;
  const uword out_n_cols = (do_trans_B == false) ? B.n_cols : B.n_rows;

  const bool alias = tmp1.is_alias(out) || tmp2.is_alias(out);

  if (alias == false) {
    out.set_size(out_n_rows, out_n_cols);

    gemm_mixed<do_trans_A, do_trans_B, use_alpha, false>::apply(out, A, B, alpha);
  } else {
    Mat<out_eT> tmp(out_n_rows, out_n_cols, arma_nozeros_indicator());

    gemm_mixed<do_trans_A, do_trans_B, use_alpha, false>::apply(tmp, A, B, alpha);

    out.steal_mem(tmp);
  }
}

//! matrix addition with different element types
template <typename T1, typename T2>
inline void glue_mixed_plus::apply(
    Mat<typename eT_promoter<T1, T2>::eT>& out,
    const mtGlue<typename eT_promoter<T1, T2>::eT, T1, T2, glue_mixed_plus>& X) {
  arma_debug_sigprint();

  typedef typename T1::elem_type eT1;
  typedef typename T2::elem_type eT2;

  typedef typename promote_type<eT1, eT2>::result out_eT;

  promote_type<eT1, eT2>::check();

  const Proxy<T1> A(X.A);
  const Proxy<T2> B(X.B);

  arma_conform_assert_same_size(A, B, "addition");

  const uword n_rows = A.get_n_rows();
  const uword n_cols = A.get_n_cols();

  out.set_size(n_rows, n_cols);

  out_eT* out_mem = out.memptr();
  const uword n_elem = out.n_elem;

  constexpr bool use_at = (Proxy<T1>::use_at || Proxy<T2>::use_at);

  if (use_at == false) {
    typename Proxy<T1>::ea_type AA = A.get_ea();
    typename Proxy<T2>::ea_type BB = B.get_ea();

    if (memory::is_aligned(out_mem)) {
      memory::mark_as_aligned(out_mem);

      for (uword i = 0; i < n_elem; ++i) {
        out_mem[i] =
            upgrade_val<eT1, eT2>::apply(AA[i]) + upgrade_val<eT1, eT2>::apply(BB[i]);
      }
    } else {
      for (uword i = 0; i < n_elem; ++i) {
        out_mem[i] =
            upgrade_val<eT1, eT2>::apply(AA[i]) + upgrade_val<eT1, eT2>::apply(BB[i]);
      }
    }
  } else {
    for (uword col = 0; col < n_cols; ++col)
      for (uword row = 0; row < n_rows; ++row) {
        (*out_mem) = upgrade_val<eT1, eT2>::apply(A.at(row, col)) +
                     upgrade_val<eT1, eT2>::apply(B.at(row, col));
        out_mem++;
      }
  }
}

//! matrix subtraction with different element types
template <typename T1, typename T2>
inline void glue_mixed_minus::apply(
    Mat<typename eT_promoter<T1, T2>::eT>& out,
    const mtGlue<typename eT_promoter<T1, T2>::eT, T1, T2, glue_mixed_minus>& X) {
  arma_debug_sigprint();

  typedef typename T1::elem_type eT1;
  typedef typename T2::elem_type eT2;

  typedef typename promote_type<eT1, eT2>::result out_eT;

  promote_type<eT1, eT2>::check();

  const Proxy<T1> A(X.A);
  const Proxy<T2> B(X.B);

  arma_conform_assert_same_size(A, B, "subtraction");

  const uword n_rows = A.get_n_rows();
  const uword n_cols = A.get_n_cols();

  out.set_size(n_rows, n_cols);

  out_eT* out_mem = out.memptr();
  const uword n_elem = out.n_elem;

  constexpr bool use_at = (Proxy<T1>::use_at || Proxy<T2>::use_at);

  if (use_at == false) {
    typename Proxy<T1>::ea_type AA = A.get_ea();
    typename Proxy<T2>::ea_type BB = B.get_ea();

    if (memory::is_aligned(out_mem)) {
      memory::mark_as_aligned(out_mem);

      for (uword i = 0; i < n_elem; ++i) {
        out_mem[i] =
            upgrade_val<eT1, eT2>::apply(AA[i]) - upgrade_val<eT1, eT2>::apply(BB[i]);
      }
    } else {
      for (uword i = 0; i < n_elem; ++i) {
        out_mem[i] =
            upgrade_val<eT1, eT2>::apply(AA[i]) - upgrade_val<eT1, eT2>::apply(BB[i]);
      }
    }
  } else {
    for (uword col = 0; col < n_cols; ++col)
      for (uword row = 0; row < n_rows; ++row) {
        (*out_mem) = upgrade_val<eT1, eT2>::apply(A.at(row, col)) -
                     upgrade_val<eT1, eT2>::apply(B.at(row, col));
        out_mem++;
      }
  }
}

//! element-wise matrix division with different element types
template <typename T1, typename T2>
inline void glue_mixed_div::apply(
    Mat<typename eT_promoter<T1, T2>::eT>& out,
    const mtGlue<typename eT_promoter<T1, T2>::eT, T1, T2, glue_mixed_div>& X) {
  arma_debug_sigprint();

  typedef typename T1::elem_type eT1;
  typedef typename T2::elem_type eT2;

  typedef typename promote_type<eT1, eT2>::result out_eT;

  promote_type<eT1, eT2>::check();

  const Proxy<T1> A(X.A);
  const Proxy<T2> B(X.B);

  arma_conform_assert_same_size(A, B, "element-wise division");

  const uword n_rows = A.get_n_rows();
  const uword n_cols = A.get_n_cols();

  out.set_size(n_rows, n_cols);

  out_eT* out_mem = out.memptr();
  const uword n_elem = out.n_elem;

  constexpr bool use_at = (Proxy<T1>::use_at || Proxy<T2>::use_at);

  if (use_at == false) {
    typename Proxy<T1>::ea_type AA = A.get_ea();
    typename Proxy<T2>::ea_type BB = B.get_ea();

    if (memory::is_aligned(out_mem)) {
      memory::mark_as_aligned(out_mem);

      for (uword i = 0; i < n_elem; ++i) {
        out_mem[i] =
            upgrade_val<eT1, eT2>::apply(AA[i]) / upgrade_val<eT1, eT2>::apply(BB[i]);
      }
    } else {
      for (uword i = 0; i < n_elem; ++i) {
        out_mem[i] =
            upgrade_val<eT1, eT2>::apply(AA[i]) / upgrade_val<eT1, eT2>::apply(BB[i]);
      }
    }
  } else {
    for (uword col = 0; col < n_cols; ++col)
      for (uword row = 0; row < n_rows; ++row) {
        (*out_mem) = upgrade_val<eT1, eT2>::apply(A.at(row, col)) /
                     upgrade_val<eT1, eT2>::apply(B.at(row, col));
        out_mem++;
      }
  }
}

//! element-wise matrix multiplication with different element types
template <typename T1, typename T2>
inline void glue_mixed_schur::apply(
    Mat<typename eT_promoter<T1, T2>::eT>& out,
    const mtGlue<typename eT_promoter<T1, T2>::eT, T1, T2, glue_mixed_schur>& X) {
  arma_debug_sigprint();

  typedef typename T1::elem_type eT1;
  typedef typename T2::elem_type eT2;

  typedef typename promote_type<eT1, eT2>::result out_eT;

  promote_type<eT1, eT2>::check();

  const Proxy<T1> A(X.A);
  const Proxy<T2> B(X.B);

  arma_conform_assert_same_size(A, B, "element-wise multiplication");

  const uword n_rows = A.get_n_rows();
  const uword n_cols = A.get_n_cols();

  out.set_size(n_rows, n_cols);

  out_eT* out_mem = out.memptr();
  const uword n_elem = out.n_elem;

  constexpr bool use_at = (Proxy<T1>::use_at || Proxy<T2>::use_at);

  if (use_at == false) {
    typename Proxy<T1>::ea_type AA = A.get_ea();
    typename Proxy<T2>::ea_type BB = B.get_ea();

    if (memory::is_aligned(out_mem)) {
      memory::mark_as_aligned(out_mem);

      for (uword i = 0; i < n_elem; ++i) {
        out_mem[i] =
            upgrade_val<eT1, eT2>::apply(AA[i]) * upgrade_val<eT1, eT2>::apply(BB[i]);
      }
    } else {
      for (uword i = 0; i < n_elem; ++i) {
        out_mem[i] =
            upgrade_val<eT1, eT2>::apply(AA[i]) * upgrade_val<eT1, eT2>::apply(BB[i]);
      }
    }
  } else {
    for (uword col = 0; col < n_cols; ++col)
      for (uword row = 0; row < n_rows; ++row) {
        (*out_mem) = upgrade_val<eT1, eT2>::apply(A.at(row, col)) *
                     upgrade_val<eT1, eT2>::apply(B.at(row, col));
        out_mem++;
      }
  }
}

//
//
//

//! cube addition with different element types
template <typename T1, typename T2>
inline void glue_mixed_plus::apply(
    Cube<typename eT_promoter<T1, T2>::eT>& out,
    const mtGlueCube<typename eT_promoter<T1, T2>::eT, T1, T2, glue_mixed_plus>& X) {
  arma_debug_sigprint();

  typedef typename T1::elem_type eT1;
  typedef typename T2::elem_type eT2;

  typedef typename promote_type<eT1, eT2>::result out_eT;

  promote_type<eT1, eT2>::check();

  const ProxyCube<T1> A(X.A);
  const ProxyCube<T2> B(X.B);

  arma_conform_assert_same_size(A, B, "addition");

  const uword n_rows = A.get_n_rows();
  const uword n_cols = A.get_n_cols();
  const uword n_slices = A.get_n_slices();

  out.set_size(n_rows, n_cols, n_slices);

  out_eT* out_mem = out.memptr();
  const uword n_elem = out.n_elem;

  constexpr bool use_at = (ProxyCube<T1>::use_at || ProxyCube<T2>::use_at);

  if (use_at == false) {
    typename ProxyCube<T1>::ea_type AA = A.get_ea();
    typename ProxyCube<T2>::ea_type BB = B.get_ea();

    for (uword i = 0; i < n_elem; ++i) {
      out_mem[i] =
          upgrade_val<eT1, eT2>::apply(AA[i]) + upgrade_val<eT1, eT2>::apply(BB[i]);
    }
  } else {
    for (uword slice = 0; slice < n_slices; ++slice)
      for (uword col = 0; col < n_cols; ++col)
        for (uword row = 0; row < n_rows; ++row) {
          (*out_mem) = upgrade_val<eT1, eT2>::apply(A.at(row, col, slice)) +
                       upgrade_val<eT1, eT2>::apply(B.at(row, col, slice));
          out_mem++;
        }
  }
}

//! cube subtraction with different element types
template <typename T1, typename T2>
inline void glue_mixed_minus::apply(
    Cube<typename eT_promoter<T1, T2>::eT>& out,
    const mtGlueCube<typename eT_promoter<T1, T2>::eT, T1, T2, glue_mixed_minus>& X) {
  arma_debug_sigprint();

  typedef typename T1::elem_type eT1;
  typedef typename T2::elem_type eT2;

  typedef typename promote_type<eT1, eT2>::result out_eT;

  promote_type<eT1, eT2>::check();

  const ProxyCube<T1> A(X.A);
  const ProxyCube<T2> B(X.B);

  arma_conform_assert_same_size(A, B, "subtraction");

  const uword n_rows = A.get_n_rows();
  const uword n_cols = A.get_n_cols();
  const uword n_slices = A.get_n_slices();

  out.set_size(n_rows, n_cols, n_slices);

  out_eT* out_mem = out.memptr();
  const uword n_elem = out.n_elem;

  constexpr bool use_at = (ProxyCube<T1>::use_at || ProxyCube<T2>::use_at);

  if (use_at == false) {
    typename ProxyCube<T1>::ea_type AA = A.get_ea();
    typename ProxyCube<T2>::ea_type BB = B.get_ea();

    for (uword i = 0; i < n_elem; ++i) {
      out_mem[i] =
          upgrade_val<eT1, eT2>::apply(AA[i]) - upgrade_val<eT1, eT2>::apply(BB[i]);
    }
  } else {
    for (uword slice = 0; slice < n_slices; ++slice)
      for (uword col = 0; col < n_cols; ++col)
        for (uword row = 0; row < n_rows; ++row) {
          (*out_mem) = upgrade_val<eT1, eT2>::apply(A.at(row, col, slice)) -
                       upgrade_val<eT1, eT2>::apply(B.at(row, col, slice));
          out_mem++;
        }
  }
}

//! element-wise cube division with different element types
template <typename T1, typename T2>
inline void glue_mixed_div::apply(
    Cube<typename eT_promoter<T1, T2>::eT>& out,
    const mtGlueCube<typename eT_promoter<T1, T2>::eT, T1, T2, glue_mixed_div>& X) {
  arma_debug_sigprint();

  typedef typename T1::elem_type eT1;
  typedef typename T2::elem_type eT2;

  typedef typename promote_type<eT1, eT2>::result out_eT;

  promote_type<eT1, eT2>::check();

  const ProxyCube<T1> A(X.A);
  const ProxyCube<T2> B(X.B);

  arma_conform_assert_same_size(A, B, "element-wise division");

  const uword n_rows = A.get_n_rows();
  const uword n_cols = A.get_n_cols();
  const uword n_slices = A.get_n_slices();

  out.set_size(n_rows, n_cols, n_slices);

  out_eT* out_mem = out.memptr();
  const uword n_elem = out.n_elem;

  constexpr bool use_at = (ProxyCube<T1>::use_at || ProxyCube<T2>::use_at);

  if (use_at == false) {
    typename ProxyCube<T1>::ea_type AA = A.get_ea();
    typename ProxyCube<T2>::ea_type BB = B.get_ea();

    for (uword i = 0; i < n_elem; ++i) {
      out_mem[i] =
          upgrade_val<eT1, eT2>::apply(AA[i]) / upgrade_val<eT1, eT2>::apply(BB[i]);
    }
  } else {
    for (uword slice = 0; slice < n_slices; ++slice)
      for (uword col = 0; col < n_cols; ++col)
        for (uword row = 0; row < n_rows; ++row) {
          (*out_mem) = upgrade_val<eT1, eT2>::apply(A.at(row, col, slice)) /
                       upgrade_val<eT1, eT2>::apply(B.at(row, col, slice));
          out_mem++;
        }
  }
}

//! element-wise cube multiplication with different element types
template <typename T1, typename T2>
inline void glue_mixed_schur::apply(
    Cube<typename eT_promoter<T1, T2>::eT>& out,
    const mtGlueCube<typename eT_promoter<T1, T2>::eT, T1, T2, glue_mixed_schur>& X) {
  arma_debug_sigprint();

  typedef typename T1::elem_type eT1;
  typedef typename T2::elem_type eT2;

  typedef typename promote_type<eT1, eT2>::result out_eT;

  promote_type<eT1, eT2>::check();

  const ProxyCube<T1> A(X.A);
  const ProxyCube<T2> B(X.B);

  arma_conform_assert_same_size(A, B, "element-wise multiplication");

  const uword n_rows = A.get_n_rows();
  const uword n_cols = A.get_n_cols();
  const uword n_slices = A.get_n_slices();

  out.set_size(n_rows, n_cols, n_slices);

  out_eT* out_mem = out.memptr();
  const uword n_elem = out.n_elem;

  constexpr bool use_at = (ProxyCube<T1>::use_at || ProxyCube<T2>::use_at);

  if (use_at == false) {
    typename ProxyCube<T1>::ea_type AA = A.get_ea();
    typename ProxyCube<T2>::ea_type BB = B.get_ea();

    for (uword i = 0; i < n_elem; ++i) {
      out_mem[i] =
          upgrade_val<eT1, eT2>::apply(AA[i]) * upgrade_val<eT1, eT2>::apply(BB[i]);
    }
  } else {
    for (uword slice = 0; slice < n_slices; ++slice)
      for (uword col = 0; col < n_cols; ++col)
        for (uword row = 0; row < n_rows; ++row) {
          (*out_mem) = upgrade_val<eT1, eT2>::apply(A.at(row, col, slice)) *
                       upgrade_val<eT1, eT2>::apply(B.at(row, col, slice));
          out_mem++;
        }
  }
}

//! @}
