Chris@49: // Copyright (C) 2008-2012 NICTA (www.nicta.com.au)
Chris@49: // Copyright (C) 2008-2012 Conrad Sanderson
Chris@49: // Copyright (C) 2012 Ryan Curtin
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 operator_plus
Chris@49: //! @{
Chris@49: 
Chris@49: 
Chris@49: 
Chris@49: //! unary plus operation (does nothing, but is required for completeness)
Chris@49: template<typename T1>
Chris@49: arma_inline
Chris@49: typename enable_if2< is_arma_type<T1>::value, const T1& >::result
Chris@49: operator+
Chris@49: (const T1& X)
Chris@49:   {
Chris@49:   arma_extra_debug_sigprint();
Chris@49:   
Chris@49:   return X;
Chris@49:   }
Chris@49: 
Chris@49: 
Chris@49: 
Chris@49: //! Base + scalar
Chris@49: template<typename T1>
Chris@49: arma_inline
Chris@49: typename enable_if2< is_arma_type<T1>::value, const eOp<T1, eop_scalar_plus> >::result
Chris@49: operator+
Chris@49: (const T1& X, const typename T1::elem_type k)
Chris@49:   {
Chris@49:   arma_extra_debug_sigprint();
Chris@49:   
Chris@49:   return eOp<T1, eop_scalar_plus>(X, k);
Chris@49:   }
Chris@49: 
Chris@49: 
Chris@49: 
Chris@49: //! scalar + Base
Chris@49: template<typename T1>
Chris@49: arma_inline
Chris@49: typename enable_if2< is_arma_type<T1>::value, const eOp<T1, eop_scalar_plus> >::result
Chris@49: operator+
Chris@49: (const typename T1::elem_type k, const T1& X)
Chris@49:   {
Chris@49:   arma_extra_debug_sigprint();
Chris@49:   
Chris@49:   return eOp<T1, eop_scalar_plus>(X, k);  // NOTE: order is swapped
Chris@49:   }
Chris@49: 
Chris@49: 
Chris@49: 
Chris@49: //! non-complex Base + complex scalar
Chris@49: template<typename T1>
Chris@49: arma_inline
Chris@49: typename
Chris@49: enable_if2
Chris@49:   <
Chris@49:   (is_arma_type<T1>::value && is_complex<typename T1::elem_type>::value == false),
Chris@49:   const mtOp<typename std::complex<typename T1::pod_type>, T1, op_cx_scalar_plus>
Chris@49:   >::result
Chris@49: operator+
Chris@49:   (
Chris@49:   const T1&                                  X,
Chris@49:   const std::complex<typename T1::pod_type>& k
Chris@49:   )
Chris@49:   {
Chris@49:   arma_extra_debug_sigprint();
Chris@49:   
Chris@49:   return mtOp<typename std::complex<typename T1::pod_type>, T1, op_cx_scalar_plus>('j', X, k);
Chris@49:   }
Chris@49: 
Chris@49: 
Chris@49: 
Chris@49: //! complex scalar + non-complex Base
Chris@49: template<typename T1>
Chris@49: arma_inline
Chris@49: typename
Chris@49: enable_if2
Chris@49:   <
Chris@49:   (is_arma_type<T1>::value && is_complex<typename T1::elem_type>::value == false),
Chris@49:   const mtOp<typename std::complex<typename T1::pod_type>, T1, op_cx_scalar_plus>
Chris@49:   >::result
Chris@49: operator+
Chris@49:   (
Chris@49:   const std::complex<typename T1::pod_type>& k,
Chris@49:   const T1&                                  X
Chris@49:   )
Chris@49:   {
Chris@49:   arma_extra_debug_sigprint();
Chris@49:   
Chris@49:   return mtOp<typename std::complex<typename T1::pod_type>, T1, op_cx_scalar_plus>('j', X, k);  // NOTE: order is swapped
Chris@49:   }
Chris@49: 
Chris@49: 
Chris@49: 
Chris@49: //! addition of user-accessible Armadillo objects with same element type
Chris@49: template<typename T1, typename T2>
Chris@49: arma_inline
Chris@49: typename
Chris@49: enable_if2
Chris@49:   <
Chris@49:   is_arma_type<T1>::value && is_arma_type<T2>::value && is_same_type<typename T1::elem_type, typename T2::elem_type>::value,
Chris@49:   const eGlue<T1, T2, eglue_plus>
Chris@49:   >::result
Chris@49: operator+
Chris@49:   (
Chris@49:   const T1& X,
Chris@49:   const T2& Y
Chris@49:   )
Chris@49:   {
Chris@49:   arma_extra_debug_sigprint();
Chris@49:   
Chris@49:   return eGlue<T1, T2, eglue_plus>(X, Y);
Chris@49:   }
Chris@49: 
Chris@49: 
Chris@49: 
Chris@49: //! addition of user-accessible Armadillo objects with different element types
Chris@49: template<typename T1, typename T2>
Chris@49: inline
Chris@49: typename
Chris@49: enable_if2
Chris@49:   <
Chris@49:   (is_arma_type<T1>::value && is_arma_type<T2>::value && (is_same_type<typename T1::elem_type, typename T2::elem_type>::value == false)),
Chris@49:   const mtGlue<typename promote_type<typename T1::elem_type, typename T2::elem_type>::result, T1, T2, glue_mixed_plus>
Chris@49:   >::result
Chris@49: operator+
Chris@49:   (
Chris@49:   const T1& X,
Chris@49:   const T2& Y
Chris@49:   )
Chris@49:   {
Chris@49:   arma_extra_debug_sigprint();
Chris@49:   
Chris@49:   typedef typename T1::elem_type eT1;
Chris@49:   typedef typename T2::elem_type eT2;
Chris@49:   
Chris@49:   typedef typename promote_type<eT1,eT2>::result out_eT;
Chris@49:   
Chris@49:   promote_type<eT1,eT2>::check();
Chris@49:   
Chris@49:   return mtGlue<out_eT, T1, T2, glue_mixed_plus>( X, Y );
Chris@49:   }
Chris@49: 
Chris@49: 
Chris@49: 
Chris@49: //! addition of two sparse objects
Chris@49: template<typename T1, typename T2>
Chris@49: inline
Chris@49: arma_hot
Chris@49: typename
Chris@49: enable_if2
Chris@49:   <
Chris@49:   (is_arma_sparse_type<T1>::value && is_arma_sparse_type<T2>::value && is_same_type<typename T1::elem_type, typename T2::elem_type>::value),
Chris@49:   SpGlue<T1,T2,spglue_plus>
Chris@49:   >::result
Chris@49: operator+
Chris@49:   (
Chris@49:   const T1& x,
Chris@49:   const T2& y
Chris@49:   )
Chris@49:   {
Chris@49:   arma_extra_debug_sigprint();
Chris@49:   
Chris@49:   return SpGlue<T1,T2,spglue_plus>(x, y);
Chris@49:   }
Chris@49: 
Chris@49: 
Chris@49: 
Chris@49: //! addition of sparse and non-sparse object
Chris@49: template<typename T1, typename T2>
Chris@49: inline
Chris@49: typename
Chris@49: enable_if2
Chris@49:   <
Chris@49:   (is_arma_type<T1>::value && is_arma_sparse_type<T2>::value && is_same_type<typename T1::elem_type, typename T2::elem_type>::value),
Chris@49:   Mat<typename T1::elem_type>
Chris@49:   >::result
Chris@49: operator+
Chris@49:   (
Chris@49:   const T1& x,
Chris@49:   const T2& y
Chris@49:   )
Chris@49:   {
Chris@49:   arma_extra_debug_sigprint();
Chris@49:   
Chris@49:   Mat<typename T1::elem_type> result(x);
Chris@49:   
Chris@49:   const SpProxy<T2> pb(y);
Chris@49:   
Chris@49:   arma_debug_assert_same_size( result.n_rows, result.n_cols, pb.get_n_rows(), pb.get_n_cols(), "addition" );
Chris@49:   
Chris@49:   typename SpProxy<T2>::const_iterator_type it     = pb.begin();
Chris@49:   typename SpProxy<T2>::const_iterator_type it_end = pb.end();
Chris@49:   
Chris@49:   while(it != it_end)
Chris@49:     {
Chris@49:     result.at(it.row(), it.col()) += (*it);
Chris@49:     ++it;
Chris@49:     }
Chris@49:   
Chris@49:   return result;
Chris@49:   }
Chris@49: 
Chris@49: 
Chris@49: 
Chris@49: //! addition of sparse and non-sparse object
Chris@49: template<typename T1, typename T2>
Chris@49: inline
Chris@49: typename
Chris@49: enable_if2
Chris@49:   <
Chris@49:   (is_arma_sparse_type<T1>::value && is_arma_type<T2>::value && is_same_type<typename T1::elem_type, typename T2::elem_type>::value),
Chris@49:   Mat<typename T1::elem_type>
Chris@49:   >::result
Chris@49: operator+
Chris@49:   (
Chris@49:   const T1& x,
Chris@49:   const T2& y
Chris@49:   )
Chris@49:   {
Chris@49:   arma_extra_debug_sigprint();
Chris@49:   
Chris@49:   // Just call the other order (these operations are commutative)
Chris@49:   return (y + x);
Chris@49:   }
Chris@49: 
Chris@49: 
Chris@49: 
Chris@49: //! @}