Chris@49: // Copyright (C) 2010-2012 NICTA (www.nicta.com.au)
Chris@49: // Copyright (C) 2010-2012 Conrad Sanderson
Chris@49: // 
Chris@49: // This Source Code Form is subject to the terms of the Mozilla Public
Chris@49: // License, v. 2.0. If a copy of the MPL was not distributed with this
Chris@49: // file, You can obtain one at http://mozilla.org/MPL/2.0/.
Chris@49: 
Chris@49: 
Chris@49: //! \addtogroup op_cumsum
Chris@49: //! @{
Chris@49: 
Chris@49: 
Chris@49: template<typename T1>
Chris@49: inline
Chris@49: void
Chris@49: op_cumsum_mat::apply(Mat<typename T1::elem_type>& out, const Op<T1,op_cumsum_mat>& in)
Chris@49:   {
Chris@49:   arma_extra_debug_sigprint();
Chris@49:   
Chris@49:   typedef typename T1::elem_type eT;
Chris@49:   
Chris@49:   const unwrap_check<T1>  tmp(in.m, out);
Chris@49:   const Mat<eT>&      X = tmp.M;
Chris@49:   
Chris@49:   const uword dim = in.aux_uword_a;
Chris@49:   arma_debug_check( (dim > 1), "cumsum(): incorrect usage. dim must be 0 or 1");
Chris@49:   
Chris@49:   out.copy_size(X);
Chris@49:   
Chris@49:   const uword X_n_rows = X.n_rows;
Chris@49:   const uword X_n_cols = X.n_cols;
Chris@49:   
Chris@49:   if(dim == 0)
Chris@49:     {
Chris@49:     arma_extra_debug_print("op_cumsum::apply(), dim = 0");
Chris@49:     
Chris@49:     for(uword col=0; col<X_n_cols; ++col)
Chris@49:       {
Chris@49:             eT* out_colmem = out.colptr(col);
Chris@49:       const eT* X_colmem   = X.colptr(col);
Chris@49:       
Chris@49:       eT acc = eT(0);
Chris@49:       
Chris@49:       for(uword row=0; row<X_n_rows; ++row)
Chris@49:         {
Chris@49:         acc += X_colmem[row];
Chris@49:         
Chris@49:         out_colmem[row] = acc;
Chris@49:         }
Chris@49:       }
Chris@49:     }
Chris@49:   else
Chris@49:   if(dim == 1)
Chris@49:     {
Chris@49:     arma_extra_debug_print("op_cumsum::apply(), dim = 1");
Chris@49:     
Chris@49:     for(uword row=0; row<X_n_rows; ++row)
Chris@49:       {
Chris@49:       eT acc = eT(0);
Chris@49:       
Chris@49:       for(uword col=0; col<X_n_cols; ++col)
Chris@49:         {
Chris@49:         acc += X.at(row,col);
Chris@49:         
Chris@49:         out.at(row,col) = acc;
Chris@49:         }
Chris@49:       }
Chris@49:     }
Chris@49:   }
Chris@49: 
Chris@49: 
Chris@49: 
Chris@49: template<typename T1>
Chris@49: inline
Chris@49: void
Chris@49: op_cumsum_vec::apply(Mat<typename T1::elem_type>& out, const Op<T1,op_cumsum_vec>& in)
Chris@49:   {
Chris@49:   arma_extra_debug_sigprint();
Chris@49:   
Chris@49:   typedef typename T1::elem_type eT;
Chris@49:   
Chris@49:   const unwrap_check<T1>   tmp(in.m, out);
Chris@49:   const Mat<eT>&       X = tmp.M;
Chris@49:   
Chris@49:   const uword n_elem = X.n_elem;
Chris@49:   
Chris@49:   out.copy_size(X);
Chris@49:   
Chris@49:         eT* out_mem = out.memptr();
Chris@49:   const eT* X_mem   = X.memptr();
Chris@49:   
Chris@49:   eT acc = eT(0);
Chris@49:   
Chris@49:   for(uword i=0; i<n_elem; ++i)
Chris@49:     {
Chris@49:     acc += X_mem[i];
Chris@49:     
Chris@49:     out_mem[i] = acc;
Chris@49:     }
Chris@49:   }
Chris@49: 
Chris@49: 
Chris@49: 
Chris@49: //! @}
Chris@49: