// 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_norm2est
//! @{

template <typename eT>
struct norm2est_randu_filler {
  std::mt19937_64 local_engine;
  std::uniform_real_distribution<eT> local_u_distr;

  inline norm2est_randu_filler();

  inline void fill(eT* mem, const uword N);
};

template <typename T>
struct norm2est_randu_filler<std::complex<T> > {
  std::mt19937_64 local_engine;
  std::uniform_real_distribution<T> local_u_distr;

  inline norm2est_randu_filler();

  inline void fill(std::complex<T>* mem, const uword N);
};

class op_norm2est : public traits_op_default {
 public:
  template <typename T1>
  inline static typename T1::pod_type norm2est(const Base<typename T1::elem_type, T1>& X,
                                               const typename T1::pod_type tolerance,
                                               const uword max_iter);
  template <typename T1>
  inline static typename T1::pod_type norm2est(
      const SpBase<typename T1::elem_type, T1>& X, const typename T1::pod_type tolerance,
      const uword max_iter);
};

//! @}
