Subversion Repositories Kolibri OS

Rev

Blame | Last modification | View Log | RSS feed

  1. // TR2 <ratio> -*- C++ -*-
  2.  
  3. // Copyright (C) 2010-2013 Free Software Foundation, Inc.
  4. //
  5. // This file is part of the GNU ISO C++ Library.  This library is free
  6. // software; you can redistribute it and/or modify it under the
  7. // terms of the GNU General Public License as published by the
  8. // Free Software Foundation; either version 3, or (at your option)
  9. // any later version.
  10.  
  11. // This library is distributed in the hope that it will be useful,
  12. // but WITHOUT ANY WARRANTY; without even the implied warranty of
  13. // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14. // GNU General Public License for more details.
  15.  
  16. // Under Section 7 of GPL version 3, you are granted additional
  17. // permissions described in the GCC Runtime Library Exception, version
  18. // 3.1, as published by the Free Software Foundation.
  19.  
  20. // You should have received a copy of the GNU General Public License and
  21. // a copy of the GCC Runtime Library Exception along with this program;
  22. // see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
  23. // <http://www.gnu.org/licenses/>.
  24.  
  25. /** @file tr2/ratio
  26.  *  This is a TR2 C++ Library header.
  27.  */
  28.  
  29. #include <ratio>
  30.  
  31. namespace std _GLIBCXX_VISIBILITY(default)
  32. {
  33. namespace tr2
  34. {
  35. _GLIBCXX_BEGIN_NAMESPACE_VERSION
  36.  
  37.   template<intmax_t _Pn, size_t _Bit,
  38.              bool = _Bit < static_cast<size_t>
  39.                           (std::numeric_limits<intmax_t>::digits)>
  40.     struct __safe_lshift
  41.     { static const intmax_t __value = 0; };
  42.  
  43.     template<intmax_t _Pn, size_t _Bit>
  44.       struct __safe_lshift<_Pn, _Bit, true>
  45.       { static const intmax_t __value = _Pn << _Bit; };
  46.  
  47.   /// Add binary prefixes (IEC 60027-2 A.2 and ISO/IEC 80000).
  48.   typedef ratio<__safe_lshift<1, 10>::__value, 1> kibi;
  49.   typedef ratio<__safe_lshift<1, 20>::__value, 1> mebi;
  50.   typedef ratio<__safe_lshift<1, 30>::__value, 1> gibi;
  51.   typedef ratio<__safe_lshift<1, 40>::__value, 1> tebi;
  52.   typedef ratio<__safe_lshift<1, 50>::__value, 1> pebi;
  53.   typedef ratio<__safe_lshift<1, 60>::__value, 1> exbi;
  54.   //typedef ratio<__safe_lshift<1, 70>::__value, 1> zebi;
  55.   //typedef ratio<__safe_lshift<1, 80>::__value, 1> yobi;
  56.  
  57. _GLIBCXX_END_NAMESPACE_VERSION
  58. }
  59. }
  60.