Help on Biset

Help on Biset

[Siyan Li]

Hi,
I am fairly new to the list. If you think that I am saying something
stupid, please do correct me.
  I am trying to use stl bitset with gcc. However, I found that the
.to_string() method is not implemented.

  Here is the code I was trying to run,

#include <fstream>
#include <bitset>
int main(){
   ofstream out;
   out.open("bittry.txt");
   int i = 97;
   bitset<12> set1(i);
   out << set1.to_string();
   out.close();
   return 1;
}

  What I need to do is to try to output one bit at a time to a file... I
am trying to make a binary file(for example, "011" will be outputted as
bits "011", not string "011" to a file).
  Please let me know if it is a but of Gcc and if it is, is there
anyways to get around it?

Thanks,
-- 
--
Yan
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Re: Help on Biset

[Gokhan Kisacikoglu]

Would this work until the functionality is established in the sgi
headers?

#include <iostream>
#include <bitset>

using namespace std;

template <size_t _Nb, class _WordT>
string &operator << (string &_s, bitset <_Nb, _WordT> _b)
{
  _s.assign(_Nb, '0');
  
  for (size_t i = 0; i < _Nb; ++i) 
    if (_b.test(i)) _s[_Nb - 1 - i] = '1';
  
  return _s;
}

template <size_t _Nb, class _WordT>
ostream &operator << (ostream &_s, bitset <_Nb, _WordT> _b)
{
  string s;
  s << _b;
  
  _s << s;
  return _s;
}

int
main(void)
{
    bitset <12> b( 96 );
    
    string s;
    s << b;
    
    cerr << s << " " << b << endl;
}

Re: Help on Biset

[Gokhan Kisacikoglu]

Gokhan Kisacikoglu wrote:
> 
> Would this work until the functionality is established in the sgi
> headers?
> 

I meant the gcc headers, the code I sent is from the sgi's
implementation which is probably some hp implementation etc...

Gokhan