Chris@49: // Copyright (C) 2010-2013 NICTA (www.nicta.com.au)
Chris@49: // Copyright (C) 2010-2013 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 subview_elem1
Chris@49: //! @{
Chris@49: 
Chris@49: 
Chris@49: template<typename eT, typename T1>
Chris@49: inline
Chris@49: subview_elem1<eT,T1>::~subview_elem1()
Chris@49:   {
Chris@49:   arma_extra_debug_sigprint();
Chris@49:   }
Chris@49: 
Chris@49: 
Chris@49: template<typename eT, typename T1>
Chris@49: arma_inline
Chris@49: subview_elem1<eT,T1>::subview_elem1(const Mat<eT>& in_m, const Base<uword,T1>& in_a)
Chris@49:   : m(in_m)
Chris@49:   , a(in_a)
Chris@49:   {
Chris@49:   arma_extra_debug_sigprint();
Chris@49:   }
Chris@49: 
Chris@49: 
Chris@49: 
Chris@49: template<typename eT, typename T1>
Chris@49: template<typename op_type>
Chris@49: inline
Chris@49: void
Chris@49: subview_elem1<eT,T1>::inplace_op(const eT val)
Chris@49:   {
Chris@49:   arma_extra_debug_sigprint();
Chris@49:   
Chris@49:   Mat<eT>& m_local = const_cast< Mat<eT>& >(m);
Chris@49:   
Chris@49:         eT*   m_mem    = m_local.memptr();
Chris@49:   const uword m_n_elem = m_local.n_elem;
Chris@49:   
Chris@49:   const unwrap_check_mixed<T1> tmp(a.get_ref(), m_local);
Chris@49:   const umat& aa = tmp.M;
Chris@49:   
Chris@49:   arma_debug_check
Chris@49:     (
Chris@49:     ( (aa.is_vec() == false) && (aa.is_empty() == false) ),
Chris@49:     "Mat::elem(): given object is not a vector"
Chris@49:     );
Chris@49:   
Chris@49:   const uword* aa_mem    = aa.memptr();
Chris@49:   const uword  aa_n_elem = aa.n_elem;
Chris@49:   
Chris@49:   uword iq,jq;
Chris@49:   for(iq=0, jq=1; jq < aa_n_elem; iq+=2, jq+=2)
Chris@49:     {
Chris@49:     const uword ii = aa_mem[iq];
Chris@49:     const uword jj = aa_mem[jq];
Chris@49:     
Chris@49:     arma_debug_check( ( (ii >= m_n_elem) || (jj >= m_n_elem) ), "Mat::elem(): index out of bounds" );
Chris@49:     
Chris@49:          if(is_same_type<op_type, op_subview_elem_equ          >::value == true) { m_mem[ii] =  val; m_mem[jj] =  val; }
Chris@49:     else if(is_same_type<op_type, op_subview_elem_inplace_plus >::value == true) { m_mem[ii] += val; m_mem[jj] += val; }
Chris@49:     else if(is_same_type<op_type, op_subview_elem_inplace_minus>::value == true) { m_mem[ii] -= val; m_mem[jj] -= val; }
Chris@49:     else if(is_same_type<op_type, op_subview_elem_inplace_schur>::value == true) { m_mem[ii] *= val; m_mem[jj] *= val; }
Chris@49:     else if(is_same_type<op_type, op_subview_elem_inplace_div  >::value == true) { m_mem[ii] /= val; m_mem[jj] /= val; }
Chris@49:     }
Chris@49:   
Chris@49:   if(iq < aa_n_elem)
Chris@49:     {
Chris@49:     const uword ii = aa_mem[iq];
Chris@49:     
Chris@49:     arma_debug_check( (ii >= m_n_elem) , "Mat::elem(): index out of bounds" ); 
Chris@49:     
Chris@49:          if(is_same_type<op_type, op_subview_elem_equ          >::value == true) { m_mem[ii] =  val; }
Chris@49:     else if(is_same_type<op_type, op_subview_elem_inplace_plus >::value == true) { m_mem[ii] += val; }
Chris@49:     else if(is_same_type<op_type, op_subview_elem_inplace_minus>::value == true) { m_mem[ii] -= val; }
Chris@49:     else if(is_same_type<op_type, op_subview_elem_inplace_schur>::value == true) { m_mem[ii] *= val; }
Chris@49:     else if(is_same_type<op_type, op_subview_elem_inplace_div  >::value == true) { m_mem[ii] /= val; }
Chris@49:     }
Chris@49:   }
Chris@49: 
Chris@49: 
Chris@49: 
Chris@49: template<typename eT, typename T1>
Chris@49: template<typename op_type, typename T2>
Chris@49: inline
Chris@49: void
Chris@49: subview_elem1<eT,T1>::inplace_op(const subview_elem1<eT,T2>& x)
Chris@49:   {
Chris@49:   arma_extra_debug_sigprint();
Chris@49:   
Chris@49:   subview_elem1<eT,T1>& s = *this;
Chris@49:   
Chris@49:   if(&(s.m) == &(x.m))
Chris@49:     {
Chris@49:     arma_extra_debug_print("subview_elem1::inplace_op(): aliasing detected");
Chris@49:     
Chris@49:     const Mat<eT> tmp(x);
Chris@49:     
Chris@49:          if(is_same_type<op_type, op_subview_elem_equ          >::value == true) { s.operator= (tmp); }
Chris@49:     else if(is_same_type<op_type, op_subview_elem_inplace_plus >::value == true) { s.operator+=(tmp); }
Chris@49:     else if(is_same_type<op_type, op_subview_elem_inplace_minus>::value == true) { s.operator-=(tmp); }
Chris@49:     else if(is_same_type<op_type, op_subview_elem_inplace_schur>::value == true) { s.operator%=(tmp); }
Chris@49:     else if(is_same_type<op_type, op_subview_elem_inplace_div  >::value == true) { s.operator/=(tmp); }
Chris@49:     }
Chris@49:   else
Chris@49:     {
Chris@49:           Mat<eT>& s_m_local = const_cast< Mat<eT>& >(s.m);
Chris@49:     const Mat<eT>& x_m_local = x.m;
Chris@49:     
Chris@49:     const unwrap_check_mixed<T1> s_tmp(s.a.get_ref(), s_m_local);
Chris@49:     const unwrap_check_mixed<T2> x_tmp(x.a.get_ref(), s_m_local);
Chris@49:     
Chris@49:     const umat& s_aa = s_tmp.M;
Chris@49:     const umat& x_aa = x_tmp.M;
Chris@49:     
Chris@49:     arma_debug_check
Chris@49:       (
Chris@49:       ( ((s_aa.is_vec() == false) && (s_aa.is_empty() == false)) || ((x_aa.is_vec() == false) && (x_aa.is_empty() == false)) ),
Chris@49:       "Mat::elem(): given object is not a vector"
Chris@49:       );
Chris@49:     
Chris@49:     const uword* s_aa_mem = s_aa.memptr();
Chris@49:     const uword* x_aa_mem = x_aa.memptr();
Chris@49:     
Chris@49:     const uword s_aa_n_elem = s_aa.n_elem;
Chris@49:     
Chris@49:     arma_debug_check( (s_aa_n_elem != x_aa.n_elem), "Mat::elem(): size mismatch" );
Chris@49:     
Chris@49:     
Chris@49:           eT*   s_m_mem    = s_m_local.memptr();
Chris@49:     const uword s_m_n_elem = s_m_local.n_elem;
Chris@49:     
Chris@49:     const eT*   x_m_mem    = x_m_local.memptr();
Chris@49:     const uword x_m_n_elem = x_m_local.n_elem;
Chris@49:     
Chris@49:     uword iq,jq;
Chris@49:     for(iq=0, jq=1; jq < s_aa_n_elem; iq+=2, jq+=2)
Chris@49:       {
Chris@49:       const uword s_ii = s_aa_mem[iq];
Chris@49:       const uword s_jj = s_aa_mem[jq];
Chris@49:       
Chris@49:       const uword x_ii = x_aa_mem[iq];
Chris@49:       const uword x_jj = x_aa_mem[jq];
Chris@49:       
Chris@49:       arma_debug_check
Chris@49:         (
Chris@49:         (s_ii >= s_m_n_elem) || (s_jj >= s_m_n_elem) || (x_ii >= x_m_n_elem) || (x_jj >= x_m_n_elem),
Chris@49:         "Mat::elem(): index out of bounds"
Chris@49:         );
Chris@49:       
Chris@49:            if(is_same_type<op_type, op_subview_elem_equ          >::value == true) { s_m_mem[s_ii]  = x_m_mem[x_ii]; s_m_mem[s_jj]  = x_m_mem[x_jj]; }
Chris@49:       else if(is_same_type<op_type, op_subview_elem_inplace_plus >::value == true) { s_m_mem[s_ii] += x_m_mem[x_ii]; s_m_mem[s_jj] += x_m_mem[x_jj]; }
Chris@49:       else if(is_same_type<op_type, op_subview_elem_inplace_minus>::value == true) { s_m_mem[s_ii] -= x_m_mem[x_ii]; s_m_mem[s_jj] -= x_m_mem[x_jj]; }
Chris@49:       else if(is_same_type<op_type, op_subview_elem_inplace_schur>::value == true) { s_m_mem[s_ii] *= x_m_mem[x_ii]; s_m_mem[s_jj] *= x_m_mem[x_jj]; }
Chris@49:       else if(is_same_type<op_type, op_subview_elem_inplace_div  >::value == true) { s_m_mem[s_ii] /= x_m_mem[x_ii]; s_m_mem[s_jj] /= x_m_mem[x_jj]; }
Chris@49:       }
Chris@49:     
Chris@49:     if(iq < s_aa_n_elem)
Chris@49:       {
Chris@49:       const uword s_ii = s_aa_mem[iq];
Chris@49:       const uword x_ii = x_aa_mem[iq];
Chris@49:       
Chris@49:       arma_debug_check
Chris@49:         (
Chris@49:         ( (s_ii >= s_m_n_elem) || (x_ii >= x_m_n_elem) ),
Chris@49:         "Mat::elem(): index out of bounds"
Chris@49:         );
Chris@49:       
Chris@49:            if(is_same_type<op_type, op_subview_elem_equ          >::value == true) { s_m_mem[s_ii]  = x_m_mem[x_ii]; }
Chris@49:       else if(is_same_type<op_type, op_subview_elem_inplace_plus >::value == true) { s_m_mem[s_ii] += x_m_mem[x_ii]; }
Chris@49:       else if(is_same_type<op_type, op_subview_elem_inplace_minus>::value == true) { s_m_mem[s_ii] -= x_m_mem[x_ii]; }
Chris@49:       else if(is_same_type<op_type, op_subview_elem_inplace_schur>::value == true) { s_m_mem[s_ii] *= x_m_mem[x_ii]; }
Chris@49:       else if(is_same_type<op_type, op_subview_elem_inplace_div  >::value == true) { s_m_mem[s_ii] /= x_m_mem[x_ii]; }
Chris@49:       }
Chris@49:     }
Chris@49:   }
Chris@49: 
Chris@49: 
Chris@49: 
Chris@49: template<typename eT, typename T1>
Chris@49: template<typename op_type, typename T2>
Chris@49: inline
Chris@49: void
Chris@49: subview_elem1<eT,T1>::inplace_op(const Base<eT,T2>& x)
Chris@49:   {
Chris@49:   arma_extra_debug_sigprint();
Chris@49:   
Chris@49:   Mat<eT>& m_local = const_cast< Mat<eT>& >(m);
Chris@49:   
Chris@49:         eT*   m_mem    = m_local.memptr();
Chris@49:   const uword m_n_elem = m_local.n_elem;
Chris@49:   
Chris@49:   const unwrap_check_mixed<T1> aa_tmp(a.get_ref(), m_local);
Chris@49:   const umat& aa = aa_tmp.M;
Chris@49:   
Chris@49:   arma_debug_check
Chris@49:     (
Chris@49:     ( (aa.is_vec() == false) && (aa.is_empty() == false) ),
Chris@49:     "Mat::elem(): given object is not a vector"
Chris@49:     );
Chris@49:   
Chris@49:   const uword* aa_mem    = aa.memptr();
Chris@49:   const uword  aa_n_elem = aa.n_elem;
Chris@49:   
Chris@49:   const Proxy<T2> P(x.get_ref());
Chris@49:   
Chris@49:   arma_debug_check( (aa_n_elem != P.get_n_elem()), "Mat::elem(): size mismatch" );
Chris@49:   
Chris@49:   const bool is_alias = P.is_alias(m);
Chris@49:   
Chris@49:   if( (is_alias == false) && (Proxy<T2>::prefer_at_accessor == false) )
Chris@49:     {
Chris@49:     typename Proxy<T2>::ea_type X = P.get_ea();
Chris@49:     
Chris@49:     uword iq,jq;
Chris@49:     for(iq=0, jq=1; jq < aa_n_elem; iq+=2, jq+=2)
Chris@49:       {
Chris@49:       const uword ii = aa_mem[iq];
Chris@49:       const uword jj = aa_mem[jq];
Chris@49:       
Chris@49:       arma_debug_check( ( (ii >= m_n_elem) || (jj >= m_n_elem) ), "Mat::elem(): index out of bounds" );
Chris@49:       
Chris@49:            if(is_same_type<op_type, op_subview_elem_equ          >::value == true) { m_mem[ii] =  X[iq]; m_mem[jj]  = X[jq]; }
Chris@49:       else if(is_same_type<op_type, op_subview_elem_inplace_plus >::value == true) { m_mem[ii] += X[iq]; m_mem[jj] += X[jq]; }
Chris@49:       else if(is_same_type<op_type, op_subview_elem_inplace_minus>::value == true) { m_mem[ii] -= X[iq]; m_mem[jj] -= X[jq]; }
Chris@49:       else if(is_same_type<op_type, op_subview_elem_inplace_schur>::value == true) { m_mem[ii] *= X[iq]; m_mem[jj] *= X[jq]; }
Chris@49:       else if(is_same_type<op_type, op_subview_elem_inplace_div  >::value == true) { m_mem[ii] /= X[iq]; m_mem[jj] /= X[jq]; }
Chris@49:       }
Chris@49:     
Chris@49:     if(iq < aa_n_elem)
Chris@49:       {
Chris@49:       const uword ii = aa_mem[iq];
Chris@49:       
Chris@49:       arma_debug_check( (ii >= m_n_elem) , "Mat::elem(): index out of bounds" );
Chris@49:       
Chris@49:            if(is_same_type<op_type, op_subview_elem_equ          >::value == true) { m_mem[ii] =  X[iq]; }
Chris@49:       else if(is_same_type<op_type, op_subview_elem_inplace_plus >::value == true) { m_mem[ii] += X[iq]; }
Chris@49:       else if(is_same_type<op_type, op_subview_elem_inplace_minus>::value == true) { m_mem[ii] -= X[iq]; }
Chris@49:       else if(is_same_type<op_type, op_subview_elem_inplace_schur>::value == true) { m_mem[ii] *= X[iq]; }
Chris@49:       else if(is_same_type<op_type, op_subview_elem_inplace_div  >::value == true) { m_mem[ii] /= X[iq]; }
Chris@49:       }
Chris@49:     }
Chris@49:   else
Chris@49:     {
Chris@49:     arma_extra_debug_print("subview_elem1::inplace_op(): aliasing or prefer_at_accessor detected");
Chris@49:     
Chris@49:     const unwrap_check<typename Proxy<T2>::stored_type> tmp(P.Q, is_alias);
Chris@49:     const Mat<eT>& M = tmp.M;
Chris@49:     
Chris@49:     const eT* X = M.memptr();
Chris@49:     
Chris@49:     uword iq,jq;
Chris@49:     for(iq=0, jq=1; jq < aa_n_elem; iq+=2, jq+=2)
Chris@49:       {
Chris@49:       const uword ii = aa_mem[iq];
Chris@49:       const uword jj = aa_mem[jq];
Chris@49:       
Chris@49:       arma_debug_check( ( (ii >= m_n_elem) || (jj >= m_n_elem) ), "Mat::elem(): index out of bounds" );
Chris@49:       
Chris@49:            if(is_same_type<op_type, op_subview_elem_equ          >::value == true) { m_mem[ii] =  X[iq]; m_mem[jj]  = X[jq]; }
Chris@49:       else if(is_same_type<op_type, op_subview_elem_inplace_plus >::value == true) { m_mem[ii] += X[iq]; m_mem[jj] += X[jq]; }
Chris@49:       else if(is_same_type<op_type, op_subview_elem_inplace_minus>::value == true) { m_mem[ii] -= X[iq]; m_mem[jj] -= X[jq]; }
Chris@49:       else if(is_same_type<op_type, op_subview_elem_inplace_schur>::value == true) { m_mem[ii] *= X[iq]; m_mem[jj] *= X[jq]; }
Chris@49:       else if(is_same_type<op_type, op_subview_elem_inplace_div  >::value == true) { m_mem[ii] /= X[iq]; m_mem[jj] /= X[jq]; }
Chris@49:       }
Chris@49:     
Chris@49:     if(iq < aa_n_elem)
Chris@49:       {
Chris@49:       const uword ii = aa_mem[iq];
Chris@49:       
Chris@49:       arma_debug_check( (ii >= m_n_elem) , "Mat::elem(): index out of bounds" );
Chris@49:       
Chris@49:            if(is_same_type<op_type, op_subview_elem_equ          >::value == true) { m_mem[ii] =  X[iq]; }
Chris@49:       else if(is_same_type<op_type, op_subview_elem_inplace_plus >::value == true) { m_mem[ii] += X[iq]; }
Chris@49:       else if(is_same_type<op_type, op_subview_elem_inplace_minus>::value == true) { m_mem[ii] -= X[iq]; }
Chris@49:       else if(is_same_type<op_type, op_subview_elem_inplace_schur>::value == true) { m_mem[ii] *= X[iq]; }
Chris@49:       else if(is_same_type<op_type, op_subview_elem_inplace_div  >::value == true) { m_mem[ii] /= X[iq]; }
Chris@49:       }
Chris@49:     }
Chris@49:   }
Chris@49: 
Chris@49: 
Chris@49: 
Chris@49: //
Chris@49: //
Chris@49: 
Chris@49: 
Chris@49: 
Chris@49: template<typename eT, typename T1>
Chris@49: arma_inline
Chris@49: const Op<subview_elem1<eT,T1>,op_htrans>
Chris@49: subview_elem1<eT,T1>::t() const
Chris@49:   {
Chris@49:   return Op<subview_elem1<eT,T1>,op_htrans>(*this);
Chris@49:   }
Chris@49: 
Chris@49: 
Chris@49: 
Chris@49: template<typename eT, typename T1>
Chris@49: arma_inline
Chris@49: const Op<subview_elem1<eT,T1>,op_htrans>
Chris@49: subview_elem1<eT,T1>::ht() const
Chris@49:   {
Chris@49:   return Op<subview_elem1<eT,T1>,op_htrans>(*this);
Chris@49:   }
Chris@49: 
Chris@49: 
Chris@49: 
Chris@49: template<typename eT, typename T1>
Chris@49: arma_inline
Chris@49: const Op<subview_elem1<eT,T1>,op_strans>
Chris@49: subview_elem1<eT,T1>::st() const
Chris@49:   {
Chris@49:   return Op<subview_elem1<eT,T1>,op_strans>(*this);
Chris@49:   }
Chris@49: 
Chris@49: 
Chris@49: 
Chris@49: template<typename eT, typename T1>
Chris@49: inline
Chris@49: void
Chris@49: subview_elem1<eT,T1>::fill(const eT val)
Chris@49:   {
Chris@49:   arma_extra_debug_sigprint();
Chris@49:   
Chris@49:   inplace_op<op_subview_elem_equ>(val);
Chris@49:   }
Chris@49: 
Chris@49: 
Chris@49: 
Chris@49: template<typename eT, typename T1>
Chris@49: inline
Chris@49: void
Chris@49: subview_elem1<eT,T1>::zeros()
Chris@49:   {
Chris@49:   arma_extra_debug_sigprint();
Chris@49:   
Chris@49:   inplace_op<op_subview_elem_equ>(eT(0));
Chris@49:   }
Chris@49: 
Chris@49: 
Chris@49: 
Chris@49: template<typename eT, typename T1>
Chris@49: inline
Chris@49: void
Chris@49: subview_elem1<eT,T1>::ones()
Chris@49:   {
Chris@49:   arma_extra_debug_sigprint();
Chris@49:   
Chris@49:   inplace_op<op_subview_elem_equ>(eT(1));
Chris@49:   }
Chris@49: 
Chris@49: 
Chris@49: 
Chris@49: template<typename eT, typename T1>
Chris@49: inline
Chris@49: void
Chris@49: subview_elem1<eT,T1>::operator+= (const eT val)
Chris@49:   {
Chris@49:   arma_extra_debug_sigprint();
Chris@49:   
Chris@49:   inplace_op<op_subview_elem_inplace_plus>(val);
Chris@49:   }
Chris@49: 
Chris@49: 
Chris@49: 
Chris@49: template<typename eT, typename T1>
Chris@49: inline
Chris@49: void
Chris@49: subview_elem1<eT,T1>::operator-= (const eT val)
Chris@49:   {
Chris@49:   arma_extra_debug_sigprint();
Chris@49:   
Chris@49:   inplace_op<op_subview_elem_inplace_minus>(val);
Chris@49:   }
Chris@49: 
Chris@49: 
Chris@49: 
Chris@49: template<typename eT, typename T1>
Chris@49: inline
Chris@49: void
Chris@49: subview_elem1<eT,T1>::operator*= (const eT val)
Chris@49:   {
Chris@49:   arma_extra_debug_sigprint();
Chris@49:   
Chris@49:   inplace_op<op_subview_elem_inplace_schur>(val);
Chris@49:   }
Chris@49: 
Chris@49: 
Chris@49: 
Chris@49: template<typename eT, typename T1>
Chris@49: inline
Chris@49: void
Chris@49: subview_elem1<eT,T1>::operator/= (const eT val)
Chris@49:   {
Chris@49:   arma_extra_debug_sigprint();
Chris@49:   
Chris@49:   inplace_op<op_subview_elem_inplace_div>(val);
Chris@49:   }
Chris@49: 
Chris@49: 
Chris@49: 
Chris@49: //
Chris@49: //
Chris@49: 
Chris@49: 
Chris@49: 
Chris@49: template<typename eT, typename T1>
Chris@49: template<typename T2>
Chris@49: inline
Chris@49: void
Chris@49: subview_elem1<eT,T1>::operator_equ(const subview_elem1<eT,T2>& x)
Chris@49:   {
Chris@49:   arma_extra_debug_sigprint();
Chris@49:   
Chris@49:   inplace_op<op_subview_elem_equ>(x);
Chris@49:   }
Chris@49: 
Chris@49: 
Chris@49: 
Chris@49: 
Chris@49: template<typename eT, typename T1>
Chris@49: template<typename T2>
Chris@49: inline
Chris@49: void
Chris@49: subview_elem1<eT,T1>::operator= (const subview_elem1<eT,T2>& x)
Chris@49:   {
Chris@49:   arma_extra_debug_sigprint();
Chris@49:   
Chris@49:   (*this).operator_equ(x);
Chris@49:   }
Chris@49: 
Chris@49: 
Chris@49: 
Chris@49: //! work around compiler bugs
Chris@49: template<typename eT, typename T1>
Chris@49: inline
Chris@49: void
Chris@49: subview_elem1<eT,T1>::operator= (const subview_elem1<eT,T1>& x)
Chris@49:   {
Chris@49:   arma_extra_debug_sigprint();
Chris@49:   
Chris@49:   (*this).operator_equ(x);
Chris@49:   }
Chris@49: 
Chris@49: 
Chris@49: 
Chris@49: template<typename eT, typename T1>
Chris@49: template<typename T2>
Chris@49: inline
Chris@49: void
Chris@49: subview_elem1<eT,T1>::operator+= (const subview_elem1<eT,T2>& x)
Chris@49:   {
Chris@49:   arma_extra_debug_sigprint();
Chris@49:   
Chris@49:   inplace_op<op_subview_elem_inplace_plus>(x);
Chris@49:   }
Chris@49: 
Chris@49: 
Chris@49: 
Chris@49: template<typename eT, typename T1>
Chris@49: template<typename T2>
Chris@49: inline
Chris@49: void
Chris@49: subview_elem1<eT,T1>::operator-= (const subview_elem1<eT,T2>& x)
Chris@49:   {
Chris@49:   arma_extra_debug_sigprint();
Chris@49:   
Chris@49:   inplace_op<op_subview_elem_inplace_minus>(x);
Chris@49:   }
Chris@49: 
Chris@49: 
Chris@49: 
Chris@49: template<typename eT, typename T1>
Chris@49: template<typename T2>
Chris@49: inline
Chris@49: void
Chris@49: subview_elem1<eT,T1>::operator%= (const subview_elem1<eT,T2>& x)
Chris@49:   {
Chris@49:   arma_extra_debug_sigprint();
Chris@49:   
Chris@49:   inplace_op<op_subview_elem_inplace_schur>(x);
Chris@49:   }
Chris@49: 
Chris@49: 
Chris@49: 
Chris@49: template<typename eT, typename T1>
Chris@49: template<typename T2>
Chris@49: inline
Chris@49: void
Chris@49: subview_elem1<eT,T1>::operator/= (const subview_elem1<eT,T2>& x)
Chris@49:   {
Chris@49:   arma_extra_debug_sigprint();
Chris@49:   
Chris@49:   inplace_op<op_subview_elem_inplace_div>(x);
Chris@49:   }
Chris@49: 
Chris@49: 
Chris@49: 
Chris@49: template<typename eT, typename T1>
Chris@49: template<typename T2>
Chris@49: inline
Chris@49: void
Chris@49: subview_elem1<eT,T1>::operator= (const Base<eT,T2>& x)
Chris@49:   {
Chris@49:   arma_extra_debug_sigprint();
Chris@49:   
Chris@49:   inplace_op<op_subview_elem_equ>(x);
Chris@49:   }
Chris@49: 
Chris@49: 
Chris@49: 
Chris@49: template<typename eT, typename T1>
Chris@49: template<typename T2>
Chris@49: inline
Chris@49: void
Chris@49: subview_elem1<eT,T1>::operator+= (const Base<eT,T2>& x)
Chris@49:   {
Chris@49:   arma_extra_debug_sigprint();
Chris@49:   
Chris@49:   inplace_op<op_subview_elem_inplace_plus>(x);
Chris@49:   }
Chris@49: 
Chris@49: 
Chris@49: 
Chris@49: template<typename eT, typename T1>
Chris@49: template<typename T2>
Chris@49: inline
Chris@49: void
Chris@49: subview_elem1<eT,T1>::operator-= (const Base<eT,T2>& x)
Chris@49:   {
Chris@49:   arma_extra_debug_sigprint();
Chris@49:   
Chris@49:   inplace_op<op_subview_elem_inplace_minus>(x);
Chris@49:   }
Chris@49: 
Chris@49: 
Chris@49: 
Chris@49: template<typename eT, typename T1>
Chris@49: template<typename T2>
Chris@49: inline
Chris@49: void
Chris@49: subview_elem1<eT,T1>::operator%= (const Base<eT,T2>& x)
Chris@49:   {
Chris@49:   arma_extra_debug_sigprint();
Chris@49:   
Chris@49:   inplace_op<op_subview_elem_inplace_schur>(x);
Chris@49:   }
Chris@49: 
Chris@49: 
Chris@49: 
Chris@49: template<typename eT, typename T1>
Chris@49: template<typename T2>
Chris@49: inline
Chris@49: void
Chris@49: subview_elem1<eT,T1>::operator/= (const Base<eT,T2>& x)
Chris@49:   {
Chris@49:   arma_extra_debug_sigprint();
Chris@49:   
Chris@49:   inplace_op<op_subview_elem_inplace_div>(x);
Chris@49:   }
Chris@49: 
Chris@49: 
Chris@49: 
Chris@49: //
Chris@49: //
Chris@49: 
Chris@49: 
Chris@49: 
Chris@49: template<typename eT, typename T1>
Chris@49: inline
Chris@49: void
Chris@49: subview_elem1<eT,T1>::extract(Mat<eT>& actual_out, const subview_elem1<eT,T1>& in)
Chris@49:   {
Chris@49:   arma_extra_debug_sigprint();
Chris@49:   
Chris@49:   const unwrap_check_mixed<T1> tmp1(in.a.get_ref(), actual_out);
Chris@49:   const umat& aa = tmp1.M;
Chris@49:   
Chris@49:   arma_debug_check
Chris@49:     (
Chris@49:     ( (aa.is_vec() == false) && (aa.is_empty() == false) ),
Chris@49:     "Mat::elem(): given object is not a vector"
Chris@49:     );
Chris@49:   
Chris@49:   const uword* aa_mem    = aa.memptr();
Chris@49:   const uword  aa_n_elem = aa.n_elem;
Chris@49:   
Chris@49:   const Mat<eT>& m_local = in.m;
Chris@49:   
Chris@49:   const eT*   m_mem    = m_local.memptr();
Chris@49:   const uword m_n_elem = m_local.n_elem;
Chris@49:   
Chris@49:   const bool alias = (&actual_out == &m_local);
Chris@49:   
Chris@49:   arma_extra_debug_warn(alias, "subview_elem1::extract(): aliasing detected");
Chris@49:   
Chris@49:   Mat<eT>* tmp_out = alias ? new Mat<eT>() : 0;
Chris@49:   Mat<eT>& out     = alias ? *tmp_out      : actual_out;
Chris@49:   
Chris@49:   out.set_size(aa_n_elem, 1);
Chris@49:   
Chris@49:   eT* out_mem = out.memptr();
Chris@49:   
Chris@49:   uword i,j;
Chris@49:   for(i=0, j=1; j<aa_n_elem; i+=2, j+=2)
Chris@49:     {
Chris@49:     const uword ii = aa_mem[i];
Chris@49:     const uword jj = aa_mem[j];
Chris@49:     
Chris@49:     arma_debug_check( ( (ii >= m_n_elem) || (jj >= m_n_elem) ), "Mat::elem(): index out of bounds" );
Chris@49:     
Chris@49:     out_mem[i] = m_mem[ii];
Chris@49:     out_mem[j] = m_mem[jj];
Chris@49:     }
Chris@49:   
Chris@49:   if(i < aa_n_elem)
Chris@49:     {
Chris@49:     const uword ii = aa_mem[i];
Chris@49:     
Chris@49:     arma_debug_check( (ii >= m_n_elem) , "Mat::elem(): index out of bounds" );
Chris@49:     
Chris@49:     out_mem[i] = m_mem[ii];
Chris@49:     }
Chris@49:   
Chris@49:   if(alias == true)
Chris@49:     {
Chris@49:     actual_out.steal_mem(out);
Chris@49:     delete tmp_out;
Chris@49:     }
Chris@49:   }
Chris@49: 
Chris@49: 
Chris@49: 
Chris@49: template<typename eT, typename T1>
Chris@49: template<typename op_type>
Chris@49: inline
Chris@49: void
Chris@49: subview_elem1<eT,T1>::mat_inplace_op(Mat<eT>& out, const subview_elem1& in)
Chris@49:   {
Chris@49:   arma_extra_debug_sigprint();
Chris@49:   
Chris@49:   const unwrap<T1> tmp1(in.a.get_ref());
Chris@49:   const umat& aa = tmp1.M;
Chris@49:   
Chris@49:   arma_debug_check
Chris@49:     (
Chris@49:     ( (aa.is_vec() == false) && (aa.is_empty() == false) ),
Chris@49:     "Mat::elem(): given object is not a vector"
Chris@49:     );
Chris@49:   
Chris@49:   const uword* aa_mem    = aa.memptr();
Chris@49:   const uword  aa_n_elem = aa.n_elem;
Chris@49:   
Chris@49:   const unwrap_check< Mat<eT> > tmp2(in.m, out);
Chris@49:   const Mat<eT>& m_local      = tmp2.M;
Chris@49:   
Chris@49:   const eT*   m_mem    = m_local.memptr();
Chris@49:   const uword m_n_elem = m_local.n_elem;
Chris@49:   
Chris@49:   arma_debug_check( (out.n_elem != aa_n_elem), "Mat::elem(): size mismatch" );
Chris@49:   
Chris@49:   eT* out_mem = out.memptr();
Chris@49:   
Chris@49:   uword i,j;
Chris@49:   for(i=0, j=1; j<aa_n_elem; i+=2, j+=2)
Chris@49:     {
Chris@49:     const uword ii = aa_mem[i];
Chris@49:     const uword jj = aa_mem[j];
Chris@49:     
Chris@49:     arma_debug_check( ( (ii >= m_n_elem) || (jj >= m_n_elem) ), "Mat::elem(): index out of bounds" );
Chris@49:     
Chris@49:          if(is_same_type<op_type, op_subview_elem_inplace_plus >::value == true) { out_mem[i] += m_mem[ii]; out_mem[j] += m_mem[jj]; }
Chris@49:     else if(is_same_type<op_type, op_subview_elem_inplace_minus>::value == true) { out_mem[i] -= m_mem[ii]; out_mem[j] -= m_mem[jj]; }
Chris@49:     else if(is_same_type<op_type, op_subview_elem_inplace_schur>::value == true) { out_mem[i] *= m_mem[ii]; out_mem[j] *= m_mem[jj]; }
Chris@49:     else if(is_same_type<op_type, op_subview_elem_inplace_div  >::value == true) { out_mem[i] /= m_mem[ii]; out_mem[j] /= m_mem[jj]; }
Chris@49:     }
Chris@49:   
Chris@49:   if(i < aa_n_elem)
Chris@49:     {
Chris@49:     const uword ii = aa_mem[i];
Chris@49:     
Chris@49:     arma_debug_check( (ii >= m_n_elem) , "Mat::elem(): index out of bounds" );
Chris@49:     
Chris@49:          if(is_same_type<op_type, op_subview_elem_inplace_plus >::value == true) { out_mem[i] += m_mem[ii]; }
Chris@49:     else if(is_same_type<op_type, op_subview_elem_inplace_minus>::value == true) { out_mem[i] -= m_mem[ii]; }
Chris@49:     else if(is_same_type<op_type, op_subview_elem_inplace_schur>::value == true) { out_mem[i] *= m_mem[ii]; }
Chris@49:     else if(is_same_type<op_type, op_subview_elem_inplace_div  >::value == true) { out_mem[i] /= m_mem[ii]; }
Chris@49:     }
Chris@49:   }
Chris@49: 
Chris@49: 
Chris@49: 
Chris@49: template<typename eT, typename T1>
Chris@49: inline
Chris@49: void
Chris@49: subview_elem1<eT,T1>::plus_inplace(Mat<eT>& out, const subview_elem1& in)
Chris@49:   {
Chris@49:   arma_extra_debug_sigprint();
Chris@49:   
Chris@49:   mat_inplace_op<op_subview_elem_inplace_plus>(out, in);
Chris@49:   }
Chris@49: 
Chris@49: 
Chris@49: 
Chris@49: template<typename eT, typename T1>
Chris@49: inline
Chris@49: void
Chris@49: subview_elem1<eT,T1>::minus_inplace(Mat<eT>& out, const subview_elem1& in)
Chris@49:   {
Chris@49:   arma_extra_debug_sigprint();
Chris@49:   
Chris@49:   mat_inplace_op<op_subview_elem_inplace_minus>(out, in);
Chris@49:   }
Chris@49: 
Chris@49: 
Chris@49: 
Chris@49: template<typename eT, typename T1>
Chris@49: inline
Chris@49: void
Chris@49: subview_elem1<eT,T1>::schur_inplace(Mat<eT>& out, const subview_elem1& in)
Chris@49:   {
Chris@49:   arma_extra_debug_sigprint();
Chris@49:   
Chris@49:   mat_inplace_op<op_subview_elem_inplace_schur>(out, in);
Chris@49:   }
Chris@49: 
Chris@49: 
Chris@49: 
Chris@49: template<typename eT, typename T1>
Chris@49: inline
Chris@49: void
Chris@49: subview_elem1<eT,T1>::div_inplace(Mat<eT>& out, const subview_elem1& in)
Chris@49:   {
Chris@49:   arma_extra_debug_sigprint();
Chris@49:   
Chris@49:   mat_inplace_op<op_subview_elem_inplace_div>(out, in);
Chris@49:   }
Chris@49: 
Chris@49: 
Chris@49: 
Chris@49: //! @}