1 | // std::rel_ops implementation -*- C++ -*- |
---|---|

2 | |

3 | // Copyright (C) 2001-2018 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, 2009 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 | /* |

26 | * |

27 | * Copyright (c) 1994 |

28 | * Hewlett-Packard Company |

29 | * |

30 | * Permission to use, copy, modify, distribute and sell this software |

31 | * and its documentation for any purpose is hereby granted without fee, |

32 | * provided that the above copyright notice appear in all copies and |

33 | * that both that copyright notice and this permission notice appear |

34 | * in supporting documentation. Hewlett-Packard Company makes no |

35 | * representations about the suitability of this software for any |

36 | * purpose. It is provided "as is" without express or implied warranty. |

37 | * |

38 | * Copyright (c) 1996,1997 |

39 | * Silicon Graphics |

40 | * |

41 | * Permission to use, copy, modify, distribute and sell this software |

42 | * and its documentation for any purpose is hereby granted without fee, |

43 | * provided that the above copyright notice appear in all copies and |

44 | * that both that copyright notice and this permission notice appear |

45 | * in supporting documentation. Silicon Graphics makes no |

46 | * representations about the suitability of this software for any |

47 | * purpose. It is provided "as is" without express or implied warranty. |

48 | * |

49 | */ |

50 | |

51 | /** @file bits/stl_relops.h |

52 | * This is an internal header file, included by other library headers. |

53 | * Do not attempt to use it directly. @headername{utility} |

54 | * |

55 | * Inclusion of this file has been removed from |

56 | * all of the other STL headers for safety reasons, except std_utility.h. |

57 | * For more information, see the thread of about twenty messages starting |

58 | * with http://gcc.gnu.org/ml/libstdc++/2001-01/msg00223.html, or |

59 | * http://gcc.gnu.org/onlinedocs/libstdc++/faq.html#faq.ambiguous_overloads |

60 | * |

61 | * Short summary: the rel_ops operators should be avoided for the present. |

62 | */ |

63 | |

64 | #ifndef _STL_RELOPS_H |

65 | #define _STL_RELOPS_H 1 |

66 | |

67 | namespace std _GLIBCXX_VISIBILITY(default) |

68 | { |

69 | _GLIBCXX_BEGIN_NAMESPACE_VERSION |

70 | |

71 | namespace rel_ops |

72 | { |

73 | /** @namespace std::rel_ops |

74 | * @brief The generated relational operators are sequestered here. |

75 | */ |

76 | |

77 | /** |

78 | * @brief Defines @c != for arbitrary types, in terms of @c ==. |

79 | * @param __x A thing. |

80 | * @param __y Another thing. |

81 | * @return __x != __y |

82 | * |

83 | * This function uses @c == to determine its result. |

84 | */ |

85 | template <class _Tp> |

86 | inline bool |

87 | operator!=(const _Tp& __x, const _Tp& __y) |

88 | { return !(__x == __y); } |

89 | |

90 | /** |

91 | * @brief Defines @c > for arbitrary types, in terms of @c <. |

92 | * @param __x A thing. |

93 | * @param __y Another thing. |

94 | * @return __x > __y |

95 | * |

96 | * This function uses @c < to determine its result. |

97 | */ |

98 | template <class _Tp> |

99 | inline bool |

100 | operator>(const _Tp& __x, const _Tp& __y) |

101 | { return __y < __x; } |

102 | |

103 | /** |

104 | * @brief Defines @c <= for arbitrary types, in terms of @c <. |

105 | * @param __x A thing. |

106 | * @param __y Another thing. |

107 | * @return __x <= __y |

108 | * |

109 | * This function uses @c < to determine its result. |

110 | */ |

111 | template <class _Tp> |

112 | inline bool |

113 | operator<=(const _Tp& __x, const _Tp& __y) |

114 | { return !(__y < __x); } |

115 | |

116 | /** |

117 | * @brief Defines @c >= for arbitrary types, in terms of @c <. |

118 | * @param __x A thing. |

119 | * @param __y Another thing. |

120 | * @return __x >= __y |

121 | * |

122 | * This function uses @c < to determine its result. |

123 | */ |

124 | template <class _Tp> |

125 | inline bool |

126 | operator>=(const _Tp& __x, const _Tp& __y) |

127 | { return !(__x < __y); } |

128 | } // namespace rel_ops |

129 | |

130 | _GLIBCXX_END_NAMESPACE_VERSION |

131 | } // namespace std |

132 | |

133 | #endif /* _STL_RELOPS_H */ |

134 |