libstdc++-v3/src/hash_tr1.cc

   1 // std::tr1::hash definitions -*- C++ -*-
   2
   3 // Copyright (C) 2007, 2008, 2009, 2010 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 #include <string>
  26 #include <tr1/functional>
  27
  28 namespace std
  29 {
  30   namespace tr1
  31   {
  32 #include "hash-long-double-aux.cc"
  33
  34 #ifndef _GLIBCXX_LONG_DOUBLE_COMPAT_IMPL
  35   template<>
  36     size_t
  37     hash<string>::operator()(string __s) const
  38     { return _Fnv_hash::hash(__s.data(), __s.length()); }
  39
  40   template<>
  41     size_t
  42     hash<const string&>::operator()(const string& __s) const
  43     { return _Fnv_hash::hash(__s.data(), __s.length()); }
  44
  45 #ifdef _GLIBCXX_USE_WCHAR_T
  46   template<>
  47     size_t
  48     hash<wstring>::operator()(wstring __s) const
  49     { return _Fnv_hash::hash(__s.data(), __s.length() * sizeof(wchar_t)); }
  50
  51   template<>
  52     size_t
  53     hash<const wstring&>::operator()(const wstring& __s) const
  54     { return _Fnv_hash::hash(__s.data(), __s.length() * sizeof(wchar_t)); }
  55 #endif
  56 #endif
  57   }
  58 }