max@0: // Copyright (C) 2010-2011 NICTA (www.nicta.com.au)
max@0: // Copyright (C) 2010-2011 Conrad Sanderson
max@0: // 
max@0: // This file is part of the Armadillo C++ library.
max@0: // It is provided without any warranty of fitness
max@0: // for any purpose. You can redistribute this file
max@0: // and/or modify it under the terms of the GNU
max@0: // Lesser General Public License (LGPL) as published
max@0: // by the Free Software Foundation, either version 3
max@0: // of the License or (at your option) any later version.
max@0: // (see http://www.opensource.org/licenses for more info)
max@0: 
max@0: 
max@0: //! \addtogroup op_cumsum
max@0: //! @{
max@0: 
max@0: 
max@0: template<typename T1>
max@0: inline
max@0: void
max@0: op_cumsum_mat::apply(Mat<typename T1::elem_type>& out, const Op<T1,op_cumsum_mat>& in)
max@0:   {
max@0:   arma_extra_debug_sigprint();
max@0:   
max@0:   typedef typename T1::elem_type eT;
max@0:   
max@0:   const unwrap<T1>   tmp(in.m);
max@0:   const Mat<eT>& X = tmp.M;
max@0:   
max@0:   const uword dim = in.aux_uword_a;
max@0:   arma_debug_check( (dim > 1), "cumsum(): incorrect usage. dim must be 0 or 1");
max@0:   
max@0:   out.copy_size(X);
max@0:   
max@0:   const uword X_n_rows = X.n_rows;
max@0:   const uword X_n_cols = X.n_cols;
max@0:   
max@0:   if(dim == 0)
max@0:     {
max@0:     arma_extra_debug_print("op_cumsum::apply(), dim = 0");
max@0:     
max@0:     for(uword col=0; col<X_n_cols; ++col)
max@0:       {
max@0:             eT* out_colmem = out.colptr(col);
max@0:       const eT* X_colmem   = X.colptr(col);
max@0:       
max@0:       eT acc = eT(0);
max@0:       
max@0:       for(uword row=0; row<X_n_rows; ++row)
max@0:         {
max@0:         acc += X_colmem[row];
max@0:         
max@0:         out_colmem[row] = acc;
max@0:         }
max@0:       }
max@0:     }
max@0:   else
max@0:   if(dim == 1)
max@0:     {
max@0:     arma_extra_debug_print("op_cumsum::apply(), dim = 1");
max@0:     
max@0:     for(uword row=0; row<X_n_rows; ++row)
max@0:       {
max@0:       eT acc = eT(0);
max@0:       
max@0:       for(uword col=0; col<X_n_cols; ++col)
max@0:         {
max@0:         acc += X.at(row,col);
max@0:         
max@0:         out.at(row,col) = acc;
max@0:         }
max@0:       }
max@0:     }
max@0:   }
max@0: 
max@0: 
max@0: 
max@0: template<typename T1>
max@0: inline
max@0: void
max@0: op_cumsum_vec::apply(Mat<typename T1::elem_type>& out, const Op<T1,op_cumsum_vec>& in)
max@0:   {
max@0:   arma_extra_debug_sigprint();
max@0:   
max@0:   typedef typename T1::elem_type eT;
max@0:   
max@0:   const unwrap<T1>   tmp(in.m);
max@0:   const Mat<eT>& X = tmp.M;
max@0:   
max@0:   const uword n_elem = X.n_elem;
max@0:   
max@0:   out.copy_size(X);
max@0:   
max@0:         eT* out_mem = out.memptr();
max@0:   const eT* X_mem   = X.memptr();
max@0:   
max@0:   eT acc = eT(0);
max@0:   
max@0:   for(uword i=0; i<n_elem; ++i)
max@0:     {
max@0:     acc += X_mem[i];
max@0:     
max@0:     out_mem[i] = acc;
max@0:     }
max@0:   }
max@0: 
max@0: 
max@0: 
max@0: //! @}
max@0: