// 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 op_misc
//! @{

template <typename T1>
inline void op_real::apply(Mat<typename T1::pod_type>& out,
                           const mtOp<typename T1::pod_type, T1, op_real>& X) {
  arma_debug_sigprint();

  typedef typename T1::pod_type T;

  const Proxy<T1> P(X.m);

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

  out.set_size(n_rows, n_cols);

  T* out_mem = out.memptr();

  if (Proxy<T1>::use_at == false) {
    typedef typename Proxy<T1>::ea_type ea_type;

    const uword n_elem = P.get_n_elem();
    ea_type A = P.get_ea();

    for (uword i = 0; i < n_elem; ++i) {
      out_mem[i] = std::real(A[i]);
    }
  } else {
    for (uword col = 0; col < n_cols; ++col)
      for (uword row = 0; row < n_rows; ++row) {
        *out_mem = std::real(P.at(row, col));
        out_mem++;
      }
  }
}

template <typename T1>
inline void op_real::apply(Cube<typename T1::pod_type>& out,
                           const mtOpCube<typename T1::pod_type, T1, op_real>& X) {
  arma_debug_sigprint();

  typedef typename T1::pod_type T;

  const ProxyCube<T1> P(X.m);

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

  out.set_size(n_rows, n_cols, n_slices);

  T* out_mem = out.memptr();

  if (ProxyCube<T1>::use_at == false) {
    typedef typename ProxyCube<T1>::ea_type ea_type;

    const uword n_elem = P.get_n_elem();
    ea_type A = P.get_ea();

    for (uword i = 0; i < n_elem; ++i) {
      out_mem[i] = std::real(A[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 = std::real(P.at(row, col, slice));
          out_mem++;
        }
  }
}

template <typename T1>
inline void op_imag::apply(Mat<typename T1::pod_type>& out,
                           const mtOp<typename T1::pod_type, T1, op_imag>& X) {
  arma_debug_sigprint();

  typedef typename T1::pod_type T;

  const Proxy<T1> P(X.m);

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

  out.set_size(n_rows, n_cols);

  T* out_mem = out.memptr();

  if (Proxy<T1>::use_at == false) {
    typedef typename Proxy<T1>::ea_type ea_type;

    const uword n_elem = P.get_n_elem();
    ea_type A = P.get_ea();

    for (uword i = 0; i < n_elem; ++i) {
      out_mem[i] = std::imag(A[i]);
    }
  } else {
    for (uword col = 0; col < n_cols; ++col)
      for (uword row = 0; row < n_rows; ++row) {
        *out_mem = std::imag(P.at(row, col));
        out_mem++;
      }
  }
}

template <typename T1>
inline void op_imag::apply(Cube<typename T1::pod_type>& out,
                           const mtOpCube<typename T1::pod_type, T1, op_imag>& X) {
  arma_debug_sigprint();

  typedef typename T1::pod_type T;

  const ProxyCube<T1> P(X.m);

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

  out.set_size(n_rows, n_cols, n_slices);

  T* out_mem = out.memptr();

  if (ProxyCube<T1>::use_at == false) {
    typedef typename ProxyCube<T1>::ea_type ea_type;

    const uword n_elem = P.get_n_elem();
    ea_type A = P.get_ea();

    for (uword i = 0; i < n_elem; ++i) {
      out_mem[i] = std::imag(A[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 = std::imag(P.at(row, col, slice));
          out_mem++;
        }
  }
}

template <typename T1>
inline void op_abs::apply(Mat<typename T1::pod_type>& out,
                          const mtOp<typename T1::pod_type, T1, op_abs>& X) {
  arma_debug_sigprint();

  typedef typename T1::pod_type T;

  const Proxy<T1> P(X.m);

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

  out.set_size(n_rows, n_cols);

  T* out_mem = out.memptr();

  if (Proxy<T1>::use_at == false) {
    typedef typename Proxy<T1>::ea_type ea_type;

    const uword n_elem = P.get_n_elem();
    ea_type A = P.get_ea();

#if defined(ARMA_USE_OPENMP)
    {
      const int n_threads = mp_thread_limit::get();
#pragma omp parallel for schedule(static) num_threads(n_threads)
      for (uword i = 0; i < n_elem; ++i) {
        out_mem[i] = std::abs(A[i]);
      }
    }
#else
    {
      for (uword i = 0; i < n_elem; ++i) {
        out_mem[i] = std::abs(A[i]);
      }
    }
#endif
  } else {
    for (uword col = 0; col < n_cols; ++col)
      for (uword row = 0; row < n_rows; ++row) {
        *out_mem = std::abs(P.at(row, col));
        out_mem++;
      }
  }
}

template <typename T1>
inline void op_abs::apply(Cube<typename T1::pod_type>& out,
                          const mtOpCube<typename T1::pod_type, T1, op_abs>& X) {
  arma_debug_sigprint();

  typedef typename T1::pod_type T;

  const ProxyCube<T1> P(X.m);

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

  out.set_size(n_rows, n_cols, n_slices);

  T* out_mem = out.memptr();

  if (ProxyCube<T1>::use_at == false) {
    typedef typename ProxyCube<T1>::ea_type ea_type;

    const uword n_elem = P.get_n_elem();
    ea_type A = P.get_ea();

#if defined(ARMA_USE_OPENMP)
    {
      const int n_threads = mp_thread_limit::get();
#pragma omp parallel for schedule(static) num_threads(n_threads)
      for (uword i = 0; i < n_elem; ++i) {
        out_mem[i] = std::abs(A[i]);
      }
    }
#else
    {
      for (uword i = 0; i < n_elem; ++i) {
        out_mem[i] = std::abs(A[i]);
      }
    }
#endif
  } 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 = std::abs(P.at(row, col, slice));
          out_mem++;
        }
  }
}

template <typename T1>
inline void op_arg::apply(Mat<typename T1::pod_type>& out,
                          const mtOp<typename T1::pod_type, T1, op_arg>& X) {
  arma_debug_sigprint();

  typedef typename T1::elem_type eT;
  typedef typename T1::pod_type T;

  const Proxy<T1> P(X.m);

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

  out.set_size(n_rows, n_cols);

  T* out_mem = out.memptr();

  if (Proxy<T1>::use_at == false) {
    typedef typename Proxy<T1>::ea_type ea_type;

    const uword n_elem = P.get_n_elem();
    ea_type A = P.get_ea();

    for (uword i = 0; i < n_elem; ++i) {
      out_mem[i] = arma_arg<eT>::eval(A[i]);
    }
  } else {
    for (uword col = 0; col < n_cols; ++col)
      for (uword row = 0; row < n_rows; ++row) {
        *out_mem = arma_arg<eT>::eval(P.at(row, col));
        out_mem++;
      }
  }
}

template <typename T1>
inline void op_arg::apply(Cube<typename T1::pod_type>& out,
                          const mtOpCube<typename T1::pod_type, T1, op_arg>& X) {
  arma_debug_sigprint();

  typedef typename T1::elem_type eT;
  typedef typename T1::pod_type T;

  const ProxyCube<T1> P(X.m);

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

  out.set_size(n_rows, n_cols, n_slices);

  T* out_mem = out.memptr();

  if (ProxyCube<T1>::use_at == false) {
    typedef typename ProxyCube<T1>::ea_type ea_type;

    const uword n_elem = P.get_n_elem();
    ea_type A = P.get_ea();

    for (uword i = 0; i < n_elem; ++i) {
      out_mem[i] = arma_arg<eT>::eval(A[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 = arma_arg<eT>::eval(P.at(row, col, slice));
          out_mem++;
        }
  }
}

//! @}
