max@0: // Copyright (C) 2008-2010 NICTA (www.nicta.com.au)
max@0: // Copyright (C) 2008-2010 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: 
max@0: //! \addtogroup operator_times
max@0: //! @{
max@0: 
max@0: 
max@0: 
max@0: //! Base * scalar
max@0: template<typename T1>
max@0: arma_inline
max@0: const eOp<T1, eop_scalar_times>
max@0: operator*
max@0: (const Base<typename T1::elem_type,T1>& X, const typename T1::elem_type k)
max@0:   {
max@0:   arma_extra_debug_sigprint();
max@0:   
max@0:   return eOp<T1, eop_scalar_times>(X.get_ref(),k);
max@0:   }
max@0: 
max@0: 
max@0: 
max@0: //! scalar * Base
max@0: template<typename T1>
max@0: arma_inline
max@0: const eOp<T1, eop_scalar_times>
max@0: operator*
max@0: (const typename T1::elem_type k, const Base<typename T1::elem_type,T1>& X)
max@0:   {
max@0:   arma_extra_debug_sigprint();
max@0:   
max@0:   return eOp<T1, eop_scalar_times>(X.get_ref(),k);  // NOTE: order is swapped
max@0:   }
max@0: 
max@0: 
max@0: 
max@0: //! non-complex Base * complex scalar (experimental)
max@0: template<typename T1>
max@0: arma_inline
max@0: const mtOp<typename std::complex<typename T1::pod_type>, T1, op_cx_scalar_times>
max@0: operator*
max@0:   (
max@0:   const Base<typename T1::pod_type, T1>&     X,
max@0:   const std::complex<typename T1::pod_type>& k
max@0:   )
max@0:   {
max@0:   arma_extra_debug_sigprint();
max@0:   
max@0:   return mtOp<typename std::complex<typename T1::pod_type>, T1, op_cx_scalar_times>('j', X.get_ref(), k);
max@0:   }
max@0: 
max@0: 
max@0: 
max@0: //! complex scalar * non-complex Base (experimental)
max@0: template<typename T1>
max@0: arma_inline
max@0: const mtOp<typename std::complex<typename T1::pod_type>, T1, op_cx_scalar_times>
max@0: operator*
max@0:   (
max@0:   const std::complex<typename T1::pod_type>& k,
max@0:   const Base<typename T1::pod_type, T1>&     X
max@0:   )
max@0:   {
max@0:   arma_extra_debug_sigprint();
max@0:   
max@0:   return mtOp<typename std::complex<typename T1::pod_type>, T1, op_cx_scalar_times>('j', X.get_ref(), k);
max@0:   }
max@0: 
max@0: 
max@0: 
max@0: //! scalar * trans(T1)
max@0: template<typename T1>
max@0: arma_inline
max@0: const Op<T1, op_htrans2>
max@0: operator*
max@0: (const typename T1::elem_type k, const Op<T1, op_htrans>& X)
max@0:   {
max@0:   arma_extra_debug_sigprint();
max@0:   
max@0:   return Op<T1, op_htrans2>(X.m, k);
max@0:   }
max@0: 
max@0: 
max@0: 
max@0: //! trans(T1) * scalar
max@0: template<typename T1>
max@0: arma_inline
max@0: const Op<T1, op_htrans2>
max@0: operator*
max@0: (const Op<T1, op_htrans>& X, const typename T1::elem_type k)
max@0:   {
max@0:   arma_extra_debug_sigprint();
max@0:   
max@0:   return Op<T1, op_htrans2>(X.m, k);
max@0:   }
max@0: 
max@0: 
max@0: 
max@0: //! Base * diagmat
max@0: template<typename T1, typename T2>
max@0: arma_inline
max@0: const Glue<T1, Op<T2, op_diagmat>, glue_times_diag>
max@0: operator*
max@0: (const Base<typename T2::elem_type,T1>& X, const Op<T2, op_diagmat>& Y)
max@0:   {
max@0:   arma_extra_debug_sigprint();
max@0:   
max@0:   return Glue<T1, Op<T2, op_diagmat>, glue_times_diag>(X.get_ref(), Y);
max@0:   }
max@0: 
max@0: 
max@0: 
max@0: //! diagmat * Base
max@0: template<typename T1, typename T2>
max@0: arma_inline
max@0: const Glue<Op<T1, op_diagmat>, T2, glue_times_diag>
max@0: operator*
max@0: (const Op<T1, op_diagmat>& X, const Base<typename T1::elem_type,T2>& Y)
max@0:   {
max@0:   arma_extra_debug_sigprint();
max@0:   
max@0:   return Glue<Op<T1, op_diagmat>, T2, glue_times_diag>(X, Y.get_ref());
max@0:   }
max@0: 
max@0: 
max@0: 
max@0: //! diagmat * diagmat
max@0: template<typename T1, typename T2>
max@0: arma_inline
max@0: Mat< typename promote_type<typename T1::elem_type, typename T2::elem_type>::result >
max@0: operator*
max@0: (const Op<T1, op_diagmat>& X, const Op<T2, op_diagmat>& Y)
max@0:   {
max@0:   arma_extra_debug_sigprint();
max@0:   
max@0:   typedef typename T1::elem_type eT1;
max@0:   typedef typename T2::elem_type eT2;
max@0:   
max@0:   typedef typename promote_type<eT1,eT2>::result out_eT;
max@0:   
max@0:   promote_type<eT1,eT2>::check();
max@0:   
max@0:   const diagmat_proxy<T1> A(X.m);
max@0:   const diagmat_proxy<T2> B(Y.m);
max@0:   
max@0:   arma_debug_assert_mul_size(A.n_elem, A.n_elem, B.n_elem, B.n_elem, "matrix multiply");
max@0:   
max@0:   const uword N = A.n_elem;
max@0:   
max@0:   Mat<out_eT> out(N,N);
max@0:   
max@0:   out.zeros();
max@0:   
max@0:   for(uword i=0; i<N; ++i)
max@0:     {
max@0:     out.at(i,i) = upgrade_val<eT1,eT2>::apply( A[i] ) * upgrade_val<eT1,eT2>::apply( B[i] );
max@0:     }
max@0:   
max@0:   return out;
max@0:   }
max@0: 
max@0: 
max@0: 
max@0: //! multiplication of Base objects with same element type
max@0: template<typename T1, typename T2>
max@0: arma_inline
max@0: const Glue<T1, T2, glue_times>
max@0: operator*
max@0: (const Base<typename T1::elem_type,T1>& X, const Base<typename T1::elem_type,T2>& Y)
max@0:   {
max@0:   arma_extra_debug_sigprint();
max@0:   
max@0:   return Glue<T1, T2, glue_times>(X.get_ref(), Y.get_ref());
max@0:   }
max@0: 
max@0: 
max@0: 
max@0: //! multiplication of Base objects with different element types
max@0: template<typename T1, typename T2>
max@0: inline
max@0: const mtGlue< typename promote_type<typename T1::elem_type, typename T2::elem_type>::result, T1, T2, glue_mixed_times >
max@0: operator*
max@0:   (
max@0:   const Base< typename force_different_type<typename T1::elem_type, typename T2::elem_type>::T1_result, T1>& X,
max@0:   const Base< typename force_different_type<typename T1::elem_type, typename T2::elem_type>::T2_result, T2>& Y
max@0:   )
max@0:   {
max@0:   arma_extra_debug_sigprint();
max@0:   
max@0:   typedef typename T1::elem_type eT1;
max@0:   typedef typename T2::elem_type eT2;
max@0:   
max@0:   typedef typename promote_type<eT1,eT2>::result out_eT;
max@0:   
max@0:   promote_type<eT1,eT2>::check();
max@0:   
max@0:   return mtGlue<out_eT, T1, T2, glue_mixed_times>( X.get_ref(), Y.get_ref() );
max@0:   }
max@0: 
max@0: 
max@0: 
max@0: //! @}