// 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_find_unique
//! @{

template <typename T1>
arma_warn_unused inline
    typename enable_if2<is_arma_type<T1>::value,
                        const mtOp<uword, T1, op_find_unique> >::result
    find_unique(const T1& X, const bool ascending_indices = true) {
  arma_extra_debug_sigprint();

  return mtOp<uword, T1, op_find_unique>(X, ((ascending_indices) ? uword(1) : uword(0)),
                                         uword(0));
}

template <typename T1>
arma_warn_unused inline uvec find_unique(const BaseCube<typename T1::elem_type, T1>& X,
                                         const bool ascending_indices = true) {
  arma_extra_debug_sigprint();

  typedef typename T1::elem_type eT;

  const unwrap_cube<T1> tmp(X.get_ref());

  const Mat<eT> R(const_cast<eT*>(tmp.M.memptr()), tmp.M.n_elem, 1, false);

  return find_unique(R, ascending_indices);
}

//! @}
