comparison armadillo-2.4.4/include/armadillo_bits/podarray_meat.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 podarray
+//! @{
+
+
+template<typename eT>
+inline
+podarray<eT>::~podarray()
+  {
+  arma_extra_debug_sigprint_this(this);
+  
+  if(n_elem > sizeof(mem_local)/sizeof(eT) )
+    {
+    delete [] mem;
+    }
+  
+  if(arma_config::debug == true)
+    {
+    access::rw(n_elem) = 0;
+    access::rw(mem)    = 0;
+    }
+  }
+
+
+
+template<typename eT>
+inline
+podarray<eT>::podarray()
+  : n_elem(0)
+  , mem   (0)
+  {
+  arma_extra_debug_sigprint_this(this);
+  }
+  
+  
+
+template<typename eT>
+inline
+podarray<eT>::podarray(const podarray& x)
+  : n_elem(0)
+  , mem   (0)
+  {
+  arma_extra_debug_sigprint();
+  
+  this->operator=(x);
+  }
+  
+  
+  
+template<typename eT>
+inline
+const podarray<eT>&
+podarray<eT>::operator=(const podarray& x)
+  {
+  arma_extra_debug_sigprint();
+  
+  if(this != &x)
+    {
+    init(x.n_elem);
+    
+    arrayops::copy( memptr(), x.memptr(), n_elem );
+    }
+  
+  return *this;
+  }
+
+
+
+template<typename eT>
+arma_inline
+podarray<eT>::podarray(const uword new_n_elem)
+  : n_elem(0)
+  , mem   (0)
+  {
+  arma_extra_debug_sigprint_this(this);
+  
+  init(new_n_elem);
+  }
+
+
+
+template<typename eT>
+arma_inline
+podarray<eT>::podarray(const eT* X, const uword new_n_elem)
+  : n_elem(0)
+  , mem   (0)
+  {
+  arma_extra_debug_sigprint_this(this);
+  
+  init(new_n_elem);
+  
+  arrayops::copy( memptr(), X, new_n_elem );
+  }
+
+
+
+template<typename eT>
+arma_inline
+eT
+podarray<eT>::operator[] (const uword i) const
+  {
+  return mem[i];
+  }
+
+
+
+template<typename eT>
+arma_inline
+eT&
+podarray<eT>::operator[] (const uword i)
+  {
+  return access::rw(mem[i]);
+  }
+  
+  
+  
+template<typename eT>
+arma_inline
+eT
+podarray<eT>::operator() (const uword i) const
+  {
+  arma_debug_check( (i >= n_elem), "podarray::operator(): index out of bounds");
+  return mem[i];
+  }
+
+
+
+template<typename eT>
+arma_inline
+eT&
+podarray<eT>::operator() (const uword i)
+  {
+  arma_debug_check( (i >= n_elem), "podarray::operator(): index out of bounds");
+  return access::rw(mem[i]);
+  }
+
+
+
+template<typename eT>
+inline
+void
+podarray<eT>::set_size(const uword new_n_elem)
+  {
+  arma_extra_debug_sigprint();
+  
+  init(new_n_elem);
+  }
+
+
+
+template<typename eT>
+inline
+void
+podarray<eT>::reset()
+  {
+  arma_extra_debug_sigprint();
+  
+  init(0);
+  }
+
+
+
+template<typename eT>
+inline
+void
+podarray<eT>::fill(const eT val)
+  {
+  arma_extra_debug_sigprint();
+  
+  arrayops::inplace_set(memptr(), val, n_elem);
+  }
+
+
+
+template<typename eT>
+inline
+void
+podarray<eT>::zeros()
+  {
+  arma_extra_debug_sigprint();
+  
+  fill(eT(0));
+  }
+
+
+
+template<typename eT>
+inline
+void
+podarray<eT>::zeros(const uword new_n_elem)
+  {
+  arma_extra_debug_sigprint();
+  
+  init(new_n_elem);
+  fill(eT(0));
+  }
+
+
+
+template<typename eT>
+arma_inline
+eT*
+podarray<eT>::memptr()
+  {
+  return const_cast<eT*>(mem);
+  }
+  
+  
+
+template<typename eT>
+arma_inline
+const eT*
+podarray<eT>::memptr() const
+  {
+  return mem;
+  }
+
+
+
+template<typename eT>
+arma_hot
+inline
+void
+podarray<eT>::copy_row(const Mat<eT>& A, const uword row)
+  {
+  const uword cols = A.n_cols;
+  
+  // note: this function assumes that the podarray has been set to the correct size beforehand
+  eT* out = memptr();
+  
+  switch(cols)
+    {
+    default:
+      {
+      uword i,j;
+      for(i=0, j=1; j < cols; i+=2, j+=2)
+        {
+        const eT tmp_i = A.at(row, i);
+        const eT tmp_j = A.at(row, j);
+        
+        out[i] = tmp_i;
+        out[j] = tmp_j;
+        }
+      
+      if(i < cols)
+        {
+        out[i] = A.at(row, i);
+        }
+      }
+      break;
+    
+    case 8:
+      out[7] = A.at(row, 7);
+
+    case 7:
+      out[6] = A.at(row, 6);
+
+    case 6:
+      out[5] = A.at(row, 5);
+
+    case 5:
+      out[4] = A.at(row, 4);
+
+    case 4:
+      out[3] = A.at(row, 3);
+
+    case 3:
+      out[2] = A.at(row, 2);
+
+    case 2:
+      out[1] = A.at(row, 1);
+
+    case 1:
+      out[0] = A.at(row, 0);
+    }
+  }
+  
+
+
+template<typename eT>
+inline
+void
+podarray<eT>::init(const uword new_n_elem)
+  {
+  arma_extra_debug_sigprint();
+  
+  if(n_elem == new_n_elem)
+    {
+    return;
+    }
+    
+  if(n_elem > sizeof(mem_local)/sizeof(eT) )
+    {
+    delete [] mem;
+    }
+  
+  if(new_n_elem <= sizeof(mem_local)/sizeof(eT) )
+    {
+    access::rw(mem) = mem_local;
+    }
+  else
+    {
+    access::rw(mem) = new eT[new_n_elem];
+    }
+  
+  access::rw(n_elem) = new_n_elem;
+  }
+
+
+
+//! @}