FixedLimits.hpp
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1 /*
2  * Copyright (c) 2017 Louis Langholtz https://github.com/louis-langholtz/PlayRho
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20 
21 #ifndef PLAYRHO_COMMON_FIXEDLIMITS_HPP
22 #define PLAYRHO_COMMON_FIXEDLIMITS_HPP
23 
24 #include <PlayRho/Common/Fixed.hpp>
25 
26 namespace std {
27 
30  template <typename BT, unsigned int FB>
31  class numeric_limits<playrho::Fixed<BT,FB>>
32  {
33  public:
34  static PLAYRHO_CONSTEXPR const bool is_specialized = true;
35 
37  static PLAYRHO_CONSTEXPR inline playrho::Fixed<BT,FB> min() noexcept { return playrho::Fixed<BT,FB>::GetMin(); }
38 
40  static PLAYRHO_CONSTEXPR inline playrho::Fixed<BT,FB> max() noexcept { return playrho::Fixed<BT,FB>::GetMax(); }
41 
43  static PLAYRHO_CONSTEXPR inline playrho::Fixed<BT,FB> lowest() noexcept { return playrho::Fixed<BT,FB>::GetLowest(); }
44 
46  static PLAYRHO_CONSTEXPR const int digits = playrho::Fixed<BT,FB>::WholeBits - 1;
47 
49  static PLAYRHO_CONSTEXPR const int digits10 = playrho::Fixed<BT,FB>::WholeBits - 1;
50 
52  static PLAYRHO_CONSTEXPR const int max_digits10 = 5; // TODO(lou): check this
53 
54  static PLAYRHO_CONSTEXPR const bool is_signed = true;
55  static PLAYRHO_CONSTEXPR const bool is_integer = false;
56  static PLAYRHO_CONSTEXPR const bool is_exact = true;
57  static PLAYRHO_CONSTEXPR const int radix = 0;
58 
60  static PLAYRHO_CONSTEXPR inline playrho::Fixed32 epsilon() noexcept { return playrho::Fixed<BT,FB>{0}; } // TODO(lou)
61 
63  static PLAYRHO_CONSTEXPR inline playrho::Fixed32 round_error() noexcept { return playrho::Fixed<BT,FB>{0}; } // TODO(lou)
64 
67  static PLAYRHO_CONSTEXPR const int min_exponent = 0;
68 
70  static PLAYRHO_CONSTEXPR const int min_exponent10 = 0;
71 
74  static PLAYRHO_CONSTEXPR const int max_exponent = 0;
75 
77  static PLAYRHO_CONSTEXPR const int max_exponent10 = 0;
78 
79  static PLAYRHO_CONSTEXPR const bool has_infinity = true;
80  static PLAYRHO_CONSTEXPR const bool has_quiet_NaN = true;
81  static PLAYRHO_CONSTEXPR const bool has_signaling_NaN = false;
82  static PLAYRHO_CONSTEXPR const float_denorm_style has_denorm = denorm_absent;
83  static PLAYRHO_CONSTEXPR const bool has_denorm_loss = false;
84 
86  static PLAYRHO_CONSTEXPR inline playrho::Fixed<BT,FB> infinity() noexcept { return playrho::Fixed<BT,FB>::GetInfinity(); }
87 
89  static PLAYRHO_CONSTEXPR inline playrho::Fixed<BT,FB> quiet_NaN() noexcept { return playrho::Fixed<BT,FB>::GetNaN(); }
90 
92  static PLAYRHO_CONSTEXPR inline playrho::Fixed<BT,FB> signaling_NaN() noexcept { return playrho::Fixed<BT,FB>{0}; }
93 
95  static PLAYRHO_CONSTEXPR inline playrho::Fixed<BT,FB> denorm_min() noexcept { return playrho::Fixed<BT,FB>{0}; }
96 
97  static PLAYRHO_CONSTEXPR const bool is_iec559 = false;
98  static PLAYRHO_CONSTEXPR const bool is_bounded = true;
99  static PLAYRHO_CONSTEXPR const bool is_modulo = false;
100 
101  static PLAYRHO_CONSTEXPR const bool traps = false;
102  static PLAYRHO_CONSTEXPR const bool tinyness_before = false;
103  static PLAYRHO_CONSTEXPR const float_round_style round_style = round_toward_zero;
104  };
105 
106 } // namespace std
107 
108 #endif // PLAYRHO_COMMON_FIXEDLIMITS_HPP