comparison armadillo-2.4.4/include/armadillo_bits/operator_times.hpp @ 0:8b6102e2a9b0

Armadillo Library

+// Copyright (C) 2008-2010 NICTA (www.nicta.com.au)
+// Copyright (C) 2008-2010 Conrad Sanderson
+// 
+// This file is part of the Armadillo C++ library.
+// It is provided without any warranty of fitness
+// for any purpose. You can redistribute this file
+// and/or modify it under the terms of the GNU
+// Lesser General Public License (LGPL) as published
+// by the Free Software Foundation, either version 3
+// of the License or (at your option) any later version.
+// (see http://www.opensource.org/licenses for more info)
+
+
+
+//! \addtogroup operator_times
+//! @{
+
+
+
+//! Base * scalar
+template<typename T1>
+arma_inline
+const eOp<T1, eop_scalar_times>
+operator*
+(const Base<typename T1::elem_type,T1>& X, const typename T1::elem_type k)
+  {
+  arma_extra_debug_sigprint();
+  
+  return eOp<T1, eop_scalar_times>(X.get_ref(),k);
+  }
+
+
+
+//! scalar * Base
+template<typename T1>
+arma_inline
+const eOp<T1, eop_scalar_times>
+operator*
+(const typename T1::elem_type k, const Base<typename T1::elem_type,T1>& X)
+  {
+  arma_extra_debug_sigprint();
+  
+  return eOp<T1, eop_scalar_times>(X.get_ref(),k);  // NOTE: order is swapped
+  }
+
+
+
+//! non-complex Base * complex scalar (experimental)
+template<typename T1>
+arma_inline
+const mtOp<typename std::complex<typename T1::pod_type>, T1, op_cx_scalar_times>
+operator*
+  (
+  const Base<typename T1::pod_type, T1>&     X,
+  const std::complex<typename T1::pod_type>& k
+  )
+  {
+  arma_extra_debug_sigprint();
+  
+  return mtOp<typename std::complex<typename T1::pod_type>, T1, op_cx_scalar_times>('j', X.get_ref(), k);
+  }
+
+
+
+//! complex scalar * non-complex Base (experimental)
+template<typename T1>
+arma_inline
+const mtOp<typename std::complex<typename T1::pod_type>, T1, op_cx_scalar_times>
+operator*
+  (
+  const std::complex<typename T1::pod_type>& k,
+  const Base<typename T1::pod_type, T1>&     X
+  )
+  {
+  arma_extra_debug_sigprint();
+  
+  return mtOp<typename std::complex<typename T1::pod_type>, T1, op_cx_scalar_times>('j', X.get_ref(), k);
+  }
+
+
+
+//! scalar * trans(T1)
+template<typename T1>
+arma_inline
+const Op<T1, op_htrans2>
+operator*
+(const typename T1::elem_type k, const Op<T1, op_htrans>& X)
+  {
+  arma_extra_debug_sigprint();
+  
+  return Op<T1, op_htrans2>(X.m, k);
+  }
+
+
+
+//! trans(T1) * scalar
+template<typename T1>
+arma_inline
+const Op<T1, op_htrans2>
+operator*
+(const Op<T1, op_htrans>& X, const typename T1::elem_type k)
+  {
+  arma_extra_debug_sigprint();
+  
+  return Op<T1, op_htrans2>(X.m, k);
+  }
+
+
+
+//! Base * diagmat
+template<typename T1, typename T2>
+arma_inline
+const Glue<T1, Op<T2, op_diagmat>, glue_times_diag>
+operator*
+(const Base<typename T2::elem_type,T1>& X, const Op<T2, op_diagmat>& Y)
+  {
+  arma_extra_debug_sigprint();
+  
+  return Glue<T1, Op<T2, op_diagmat>, glue_times_diag>(X.get_ref(), Y);
+  }
+
+
+
+//! diagmat * Base
+template<typename T1, typename T2>
+arma_inline
+const Glue<Op<T1, op_diagmat>, T2, glue_times_diag>
+operator*
+(const Op<T1, op_diagmat>& X, const Base<typename T1::elem_type,T2>& Y)
+  {
+  arma_extra_debug_sigprint();
+  
+  return Glue<Op<T1, op_diagmat>, T2, glue_times_diag>(X, Y.get_ref());
+  }
+
+
+
+//! diagmat * diagmat
+template<typename T1, typename T2>
+arma_inline
+Mat< typename promote_type<typename T1::elem_type, typename T2::elem_type>::result >
+operator*
+(const Op<T1, op_diagmat>& X, const Op<T2, op_diagmat>& Y)
+  {
+  arma_extra_debug_sigprint();
+  
+  typedef typename T1::elem_type eT1;
+  typedef typename T2::elem_type eT2;
+  
+  typedef typename promote_type<eT1,eT2>::result out_eT;
+  
+  promote_type<eT1,eT2>::check();
+  
+  const diagmat_proxy<T1> A(X.m);
+  const diagmat_proxy<T2> B(Y.m);
+  
+  arma_debug_assert_mul_size(A.n_elem, A.n_elem, B.n_elem, B.n_elem, "matrix multiply");
+  
+  const uword N = A.n_elem;
+  
+  Mat<out_eT> out(N,N);
+  
+  out.zeros();
+  
+  for(uword i=0; i<N; ++i)
+    {
+    out.at(i,i) = upgrade_val<eT1,eT2>::apply( A[i] ) * upgrade_val<eT1,eT2>::apply( B[i] );
+    }
+  
+  return out;
+  }
+
+
+
+//! multiplication of Base objects with same element type
+template<typename T1, typename T2>
+arma_inline
+const Glue<T1, T2, glue_times>
+operator*
+(const Base<typename T1::elem_type,T1>& X, const Base<typename T1::elem_type,T2>& Y)
+  {
+  arma_extra_debug_sigprint();
+  
+  return Glue<T1, T2, glue_times>(X.get_ref(), Y.get_ref());
+  }
+
+
+
+//! multiplication of Base objects with different element types
+template<typename T1, typename T2>
+inline
+const mtGlue< typename promote_type<typename T1::elem_type, typename T2::elem_type>::result, T1, T2, glue_mixed_times >
+operator*
+  (
+  const Base< typename force_different_type<typename T1::elem_type, typename T2::elem_type>::T1_result, T1>& X,
+  const Base< typename force_different_type<typename T1::elem_type, typename T2::elem_type>::T2_result, T2>& Y
+  )
+  {
+  arma_extra_debug_sigprint();
+  
+  typedef typename T1::elem_type eT1;
+  typedef typename T2::elem_type eT2;
+  
+  typedef typename promote_type<eT1,eT2>::result out_eT;
+  
+  promote_type<eT1,eT2>::check();
+  
+  return mtGlue<out_eT, T1, T2, glue_mixed_times>( X.get_ref(), Y.get_ref() );
+  }
+
+
+
+//! @}