boost - byte order

[cpp1]

hallo leute,
kleine frage bzgl boost::dynamic_bitset:

#include <iostream>
#include <iomanip>
#include <boost/dynamic_bitset.hpp>

template < typename T >
inline T highbit(T& t)
{
   return t = (((T)(-1)) >> 1) + 1;
}

template < typename T >
std::ostream& bin(T& value, std::ostream &o)
{
   for ( T bit = highbit(bit); bit; bit >>= 1 )
   {
  	o << ( ( value & bit ) ? '1' : '0' );
   }
   return o;
}

int main(int, char*[]) 
{
  unsigned int value = 0x701;
  boost::dynamic_bitset<unsigned char> x(16, value); // all 0's by default
  unsigned char y[2];
  memset(&y, 0, sizeof(y));
  std::cout << "x[i]: ";
  for (boost::dynamic_bitset<>::size_type i = 0; i < x.size(); ++i)
    std::cout << x[i];
  std::cout << "\n";
  std::cout << "x: " << x << "\n";
  std::cout << "x.num_blocks(): " << x.num_blocks() << std::endl; 

  to_block_range(x, y);
  for(unsigned int i = 0; i < 2; i++)
  {
     bin(y[i], std::cout);
     std::cout << std::endl;
  }
  std::cout << "\n";
  return EXIT_SUCCESS;
}

wenn ich das char array anschaue steht dann da (binaer):
y[0] = 00000001
y[1] = 00000111

ich möchte da gerne die byte ordner schon im boost::dynamic_bitset aendern, wie kann ich auf den block zugreifen?
soll dann im char array folgend aussehen:
y[0] = 00000111
y[1] = 00000001
[/cpp]

bye