// SPDX-License-Identifier: Apache-2.0
// 
// Copyright 2008-2016 Conrad Sanderson (https://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
// https://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_roots
//! @{



template<typename T1>
arma_warn_unused
inline
typename
enable_if2
  <
  is_blas_type<typename T1::elem_type>::value,
  const mtOp<std::complex<typename T1::pod_type>, T1, op_roots>
  >::result
roots(const Base<typename T1::elem_type, T1>& X)
  {
  arma_debug_sigprint();
  
  return mtOp<std::complex<typename T1::pod_type>, T1, op_roots>(X.get_ref());
  }



template<typename T1>
inline
typename
enable_if2
  <
  is_blas_type<typename T1::elem_type>::value,
  bool
  >::result
roots(Mat< std::complex<typename T1::pod_type> >& out, const Base<typename T1::elem_type, T1>& X)
  {
  arma_debug_sigprint();
  
  const bool status = op_roots::apply_direct(out, X.get_ref());
  
  if(status == false)
    {
    out.soft_reset();
    arma_warn(3, "roots(): eigen decomposition failed");
    }
  
  return status;
  }



//! @}
