C / C++ / MFC

double d;
unsigned char * d_layout=reinterpret_cast<unsigned char *>(&d);
//extraction
int exp=int(d_layout[6]>>4)+(int(d_layout[7]&0x7FU)<<4);
//insertion
d_layout[6]&=0x0FU;
d_layout[6]|=(exp&0x0F)<<4;
d_layout[7]&=0x80U;
d_layout[7]|=(exp&0x7F0)>>4;

CString FindMyFile(LPCTSTR apszFromDir)
{
  CFileFind finder;
  CString search;
  search.Format(_T("%s\\*"), apszFromDir);
  BOOL bWorking = finder.FindFile(search);
  while (bWorking)
  {
    bWorking = finder.FindNextFile();
    if (!finder.IsDots())
    {
      if (finder.IsDirectory())
      {
        return FindMyFile(finder.GetFilePath());
      }
      else
      {
        if (finder.GetFileName().CompareNoCase(_T("fcc32.exe")) == 0)
        {
          return GetFilePath();
        }
      }
    }
  }
  return _T("");  // It wasn't found.
}