text: // Copyright (C) 2013 Conrad Sanderson
  // Copyright (C) 2013 NICTA (www.nicta.com.au)
  // 
  // This Source Code Form is subject to the terms of the Mozilla Public
  // License, v. 2.0. If a copy of the MPL was not distributed with this
  // file, You can obtain one at http://mozilla.org/MPL/2.0/.
  
  
  
  //! \addtogroup glue_max
  //! @{
  
  
  
  template<typename eT, typename T1, typename T2>
  inline
  void
  glue_max::apply(Mat<eT>& out, const Proxy<T1>& PA, const Proxy<T2>& PB)
    {
    arma_extra_debug_sigprint();
    
    const uword n_rows = PA.get_n_rows();
    const uword n_cols = PA.get_n_cols();
    
    arma_debug_assert_same_size(n_rows, n_cols, PB.get_n_rows(), PB.get_n_cols(), "max(): given objects do not have the same size");
    
    out.set_size(n_rows, n_cols);
    
    eT* out_mem = out.memptr();
    
    if( (Proxy<T1>::prefer_at_accessor == false) && (Proxy<T2>::prefer_at_accessor == false) )
      {
      typename Proxy<T1>::ea_type A = PA.get_ea();
      typename Proxy<T2>::ea_type B = PB.get_ea();
      
      const uword N = PA.get_n_elem();
      
      for(uword i=0; i<N; ++i)
        {
        out_mem[i] = (std::max)(A[i], B[i]);
        }
      }
    else
      {
      for(uword col=0; col < n_cols; ++col)
      for(uword row=0; row < n_rows; ++row)
        {
        *out_mem = (std::max)( PA.at(row,col), PB.at(row,col) );
        
        ++out_mem;
        }
      }
    }
  
  
  
  template<typename T, typename T1, typename T2>
  inline
  void
  glue_max::apply(Mat< std::complex<T> >& out, const Proxy<T1>& PA, const Proxy<T2>& PB)
    {
    arma_extra_debug_sigprint();
    
    typedef typename std::complex<T> eT;
    
    const uword n_rows = PA.get_n_rows();
    const uword n_cols = PA.get_n_cols();
    
    arma_debug_assert_same_size(n_rows, n_cols, PB.get_n_rows(), PB.get_n_cols(), "max(): given objects do not have the same size");
    
    out.set_size(n_rows, n_cols);
    
    eT* out_mem = out.memptr();
    
    if( (Proxy<T1>::prefer_at_accessor == false) && (Proxy<T2>::prefer_at_accessor == false) )
      {
      typename Proxy<T1>::ea_type A = PA.get_ea();
      typename Proxy<T2>::ea_type B = PB.get_ea();
      
      const uword N = PA.get_n_elem();
      
      for(uword i=0; i<N; ++i)
        {
        const eT A_val = A[i];
        const eT B_val = B[i];
        
        out_mem[i] = ( std::abs(A_val) > std::abs(B_val) ) ? A_val : B_val;
        }
      }
    else
      {
      for(uword col=0; col < n_cols; ++col)
      for(uword row=0; row < n_rows; ++row)
        {
        const eT A_val = PA.at(row,col);
        const eT B_val = PB.at(row,col);
        
        *out_mem = ( std::abs(A_val) > std::abs(B_val) ) ? A_val : B_val;
        
        ++out_mem;
        }
      }
    }
  
  
  
  template<typename T1, typename T2>
  inline
  void
  glue_max::apply(Mat<typename T1::elem_type>& out, const Glue<T1, T2, glue_max>& X)
    {
    arma_extra_debug_sigprint();
    
    typedef typename T1::elem_type eT;
    
    const Proxy<T1> PA(X.A);
    const Proxy<T2> PB(X.B);
    
    if(PA.is_alias(out) || PB.is_alias(out))
      {
      Mat<eT> tmp;
      
      glue_max::apply(tmp, PA, PB);
      
      out.steal_mem(tmp);
      }
    else
      {
      glue_max::apply(out, PA, PB);
      }
    }
  
  
  
  //! @}
  