// 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 fn_clamp
//! @{

template <typename T1>
arma_warn_unused inline
    typename enable_if2<is_arma_type<T1>::value && is_cx<typename T1::elem_type>::no,
                        const mtOp<typename T1::elem_type, T1, op_clamp> >::result
    clamp(const T1& X, const typename T1::elem_type min_val,
          const typename T1::elem_type max_val) {
  arma_debug_sigprint();

  return mtOp<typename T1::elem_type, T1, op_clamp>(mtOp_dual_aux_indicator(), X, min_val,
                                                    max_val);
}

template <typename T1>
arma_warn_unused inline
    typename enable_if2<is_arma_type<T1>::value && is_cx<typename T1::elem_type>::yes,
                        const mtOp<typename T1::elem_type, T1, op_clamp_cx> >::result
    clamp(const T1& X, const typename T1::elem_type min_val,
          const typename T1::elem_type max_val) {
  arma_debug_sigprint();

  return mtOp<typename T1::elem_type, T1, op_clamp_cx>(mtOp_dual_aux_indicator(), X,
                                                       min_val, max_val);
}

template <typename T1>
arma_warn_unused inline const mtOpCube<typename T1::elem_type, T1, op_clamp> clamp(
    const BaseCube<typename T1::elem_type, T1>& X, const typename T1::elem_type min_val,
    const typename T1::elem_type max_val,
    typename arma_not_cx<typename T1::elem_type>::result* junk = nullptr) {
  arma_debug_sigprint();
  arma_ignore(junk);

  return mtOpCube<typename T1::elem_type, T1, op_clamp>(mtOpCube_dual_aux_indicator(),
                                                        X.get_ref(), min_val, max_val);
}

template <typename T1>
arma_warn_unused inline const mtOpCube<typename T1::elem_type, T1, op_clamp_cx> clamp(
    const BaseCube<typename T1::elem_type, T1>& X, const typename T1::elem_type min_val,
    const typename T1::elem_type max_val,
    typename arma_cx_only<typename T1::elem_type>::result* junk = nullptr) {
  arma_debug_sigprint();
  arma_ignore(junk);

  return mtOpCube<typename T1::elem_type, T1, op_clamp_cx>(mtOpCube_dual_aux_indicator(),
                                                           X.get_ref(), min_val, max_val);
}

template <typename T1>
arma_warn_unused inline SpMat<typename T1::elem_type> clamp(
    const SpBase<typename T1::elem_type, T1>& X, const typename T1::elem_type min_val,
    const typename T1::elem_type max_val) {
  arma_debug_sigprint();

  typedef typename T1::elem_type eT;

  if (is_cx<eT>::no) {
    arma_conform_check((access::tmp_real(min_val) > access::tmp_real(max_val)),
                       "clamp(): min_val must be less than max_val");
  } else {
    arma_conform_check((access::tmp_real(min_val) > access::tmp_real(max_val)),
                       "clamp(): real(min_val) must be less than real(max_val)");
    arma_conform_check((access::tmp_imag(min_val) > access::tmp_imag(max_val)),
                       "clamp(): imag(min_val) must be less than imag(max_val)");
  }

  SpMat<eT> out = X.get_ref();

  out.clamp(min_val, max_val);

  return out;
}

//! @}
