max@0: // Copyright (C) 2008-2011 NICTA (www.nicta.com.au)
max@0: // Copyright (C) 2008-2011 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 glue_join
max@0: //! @{
max@0: 
max@0: 
max@0: 
max@0: template<typename T1, typename T2>
max@0: inline
max@0: void
max@0: glue_join::apply(Mat<typename T1::elem_type>& out, const Glue<T1,T2,glue_join>& X)
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> A_tmp(X.A);
max@0:   const unwrap<T2> B_tmp(X.B);
max@0:   
max@0:   const Mat<eT>& A = A_tmp.M;
max@0:   const Mat<eT>& B = B_tmp.M;
max@0:   
max@0:   const uword A_n_rows = A.n_rows;
max@0:   const uword A_n_cols = A.n_cols;
max@0:   
max@0:   const uword B_n_rows = B.n_rows;
max@0:   const uword B_n_cols = B.n_cols;
max@0:   
max@0:   const uword join_type = X.aux_uword;
max@0:   
max@0:   if(join_type == 0)
max@0:     {
max@0:     arma_debug_check
max@0:       (
max@0:       ( (A_n_cols != B_n_cols) && ( (A_n_rows > 0) || (A_n_cols > 0) ) && ( (B_n_rows > 0) || (B_n_cols > 0) ) ),
max@0:       "join_cols(): number of columns must be the same"
max@0:       );
max@0:     }
max@0:   else
max@0:     {
max@0:     arma_debug_check
max@0:       (
max@0:       ( (A_n_rows != B.n_rows) && ( (A_n_rows > 0) || (A_n_cols > 0) ) && ( (B_n_rows > 0) || (B_n_cols > 0) ) ),
max@0:       "join_rows(): number of rows must be the same"
max@0:       );
max@0:     }
max@0:   
max@0:   
max@0:   if( (&out != &A) && (&out != &B) )
max@0:     {
max@0:     if(join_type == 0)   // join columns (i.e. result matrix has more rows)
max@0:       {
max@0:       out.set_size( A_n_rows + B_n_rows, (std::max)(A_n_cols, B_n_cols) );
max@0:       
max@0:       if( out.n_elem > 0 )
max@0:         {
max@0:         if(A.is_empty() == false)
max@0:           { 
max@0:           out.submat(0,        0,   A_n_rows-1, out.n_cols-1) = A;
max@0:           }
max@0:           
max@0:         if(B.is_empty() == false)
max@0:           {
max@0:           out.submat(A_n_rows, 0, out.n_rows-1, out.n_cols-1) = B;
max@0:           }
max@0:         }
max@0:       }
max@0:     else   // join rows  (i.e. result matrix has more columns)
max@0:       {
max@0:       out.set_size( (std::max)(A_n_rows, B_n_rows), A_n_cols + B_n_cols );
max@0:       
max@0:       if( out.n_elem > 0 )
max@0:         {
max@0:         if(A.is_empty() == false)
max@0:           {
max@0:           out.submat(0, 0,        out.n_rows-1,   A.n_cols-1) = A;
max@0:           }
max@0:         
max@0:         if(B.is_empty() == false)
max@0:           {
max@0:           out.submat(0, A_n_cols, out.n_rows-1, out.n_cols-1) = B;
max@0:           }
max@0:         }
max@0:       }
max@0:     }
max@0:   else  // we have aliasing
max@0:     {
max@0:     Mat<eT> C;
max@0:     
max@0:     if(join_type == 0)
max@0:       {
max@0:       C.set_size( A_n_rows + B_n_rows, (std::max)(A_n_cols, B_n_cols) );
max@0:       
max@0:       if( C.n_elem > 0 )
max@0:         {
max@0:         if(A.is_empty() == false)
max@0:           {
max@0:           C.submat(0,        0, A_n_rows-1, C.n_cols-1) = A;
max@0:           }
max@0:         
max@0:         if(B.is_empty() == false)
max@0:           {
max@0:           C.submat(A_n_rows, 0, C.n_rows-1, C.n_cols-1) = B;
max@0:           }
max@0:         }
max@0:       }
max@0:     else
max@0:       {
max@0:       C.set_size( (std::max)(A_n_rows, B_n_rows), A_n_cols + B_n_cols );
max@0:       
max@0:       if( C.n_elem > 0 )
max@0:         {
max@0:         if(A.is_empty() == false)
max@0:           {
max@0:           C.submat(0, 0,        C.n_rows-1, A_n_cols-1) = A;
max@0:           }
max@0:         
max@0:         if(B.is_empty() == false)
max@0:           {
max@0:           C.submat(0, A_n_cols, C.n_rows-1, C.n_cols-1) = B;
max@0:           }
max@0:         }
max@0:       }
max@0:     
max@0:     out.steal_mem(C);
max@0:     }
max@0:   
max@0:   }
max@0: 
max@0: 
max@0: 
max@0: template<typename T1, typename T2>
max@0: inline
max@0: void
max@0: glue_join::apply(Cube<typename T1::elem_type>& out, const GlueCube<T1,T2,glue_join>& X)
max@0:   {
max@0:   arma_extra_debug_sigprint();
max@0:   
max@0:   typedef typename T1::elem_type eT;
max@0: 
max@0:   const unwrap_cube<T1> A_tmp(X.A);
max@0:   const unwrap_cube<T2> B_tmp(X.B);
max@0:   
max@0:   const Cube<eT>& A = A_tmp.M;
max@0:   const Cube<eT>& B = B_tmp.M;
max@0:   
max@0:   if(A.n_elem == 0)
max@0:     {
max@0:     out = B;
max@0:     return;
max@0:     }
max@0:   
max@0:   if(B.n_elem == 0)
max@0:     {
max@0:     out = A;
max@0:     return;
max@0:     }
max@0:   
max@0:   
max@0:   arma_debug_check( ( (A.n_rows != B.n_rows) || (A.n_cols != B.n_cols) ), "join_slices(): size of slices must be the same" );
max@0:   
max@0:   
max@0:   if( (&out != &A) && (&out != &B) )
max@0:     {
max@0:     out.set_size(A.n_rows, A.n_cols, A.n_slices + B.n_slices);
max@0:     
max@0:     out.slices(0,          A.n_slices-1  ) = A;
max@0:     out.slices(A.n_slices, out.n_slices-1) = B;
max@0:     }
max@0:   else  // we have aliasing
max@0:     {
max@0:     Cube<eT> C(A.n_rows, A.n_cols, A.n_slices + B.n_slices);
max@0:     
max@0:     C.slices(0,          A.n_slices-1) = A;
max@0:     C.slices(A.n_slices, C.n_slices-1) = B;
max@0:     
max@0:     out.steal_mem(C);
max@0:     }
max@0:   
max@0:   }
max@0: 
max@0: 
max@0: 
max@0: //! @}