// 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_nonzeros
//! @{



class op_nonzeros
  : public traits_op_col
  {
  public:
  
  // for dense matrices
  
  template<typename T1>
  static inline void apply_noalias(Mat<typename T1::elem_type>& out, const Proxy<T1>& P);
  
  template<typename T1>
  static inline void apply(Mat<typename T1::elem_type>& out, const Op<T1, op_nonzeros>& X);
  };



class op_nonzeros_spmat
  : public traits_op_col
  {
  public:
  
  template<typename T1>
  static inline void apply(Mat<typename T1::elem_type>& out, const SpToDOp<T1, op_nonzeros_spmat>& X);
  };



//! @}
