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  1. // std::tr1::hash definitions with new string -*- C++ -*-
  2.  
  3. // Copyright (C) 2014-2015 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. #define _GLIBCXX_USE_CXX11_ABI 1
  26. #include <string>
  27.  
  28. #if ! _GLIBCXX_USE_DUAL_ABI
  29. # error This file should not be compiled for this configuration.
  30. #endif
  31.  
  32. #include <tr1/functional>
  33. namespace std _GLIBCXX_VISIBILITY(default)
  34. {
  35.   namespace tr1
  36.   {
  37.   template<>
  38.     size_t
  39.     hash<string>::operator()(string __s) const
  40.     { return _Fnv_hash::hash(__s.data(), __s.length()); }
  41.  
  42.   template<>
  43.     size_t
  44.     hash<const string&>::operator()(const string& __s) const
  45.     { return _Fnv_hash::hash(__s.data(), __s.length()); }
  46.  
  47. #ifdef _GLIBCXX_USE_WCHAR_T
  48.   template<>
  49.     size_t
  50.     hash<wstring>::operator()(wstring __s) const
  51.     { return _Fnv_hash::hash(__s.data(), __s.length() * sizeof(wchar_t)); }
  52.  
  53.   template<>
  54.     size_t
  55.     hash<const wstring&>::operator()(const wstring& __s) const
  56.     { return _Fnv_hash::hash(__s.data(), __s.length() * sizeof(wchar_t)); }
  57. #endif
  58.   }
  59. }
  60.