1// Boost.Units - A C++ library for zero-overhead dimensional analysis and
2// unit/quantity manipulation and conversion
3//
4// Copyright (C) 2003-2008 Matthias Christian Schabel
5// Copyright (C) 2007-2008 Steven Watanabe
6//
7// Distributed under the Boost Software License, Version 1.0. (See
8// accompanying file LICENSE_1_0.txt or copy at
9// http://www.boost.org/LICENSE_1_0.txt)
10
11#ifndef BOOST_UNITS_LIMITS_HPP
12#define BOOST_UNITS_LIMITS_HPP
13
14///
15/// \file
16/// \brief specialize std::numeric_limits for units.
17///
18
19#include <limits>
20
21#include <boost/config.hpp>
22#include <boost/units/units_fwd.hpp>
23
24namespace std {
25
26template<class Unit, class T>
27class numeric_limits< ::boost::units::quantity<Unit, T> >
28{
29 public:
30 typedef ::boost::units::quantity<Unit, T> quantity_type;
31 static const bool is_specialized = std::numeric_limits<T>::is_specialized;
32 static quantity_type (min)() { return(quantity_type::from_value((std::numeric_limits<T>::min)())); }
33 static quantity_type (max)() { return(quantity_type::from_value((std::numeric_limits<T>::max)())); }
34#ifndef BOOST_NO_CXX11_NUMERIC_LIMITS
35 static quantity_type (lowest)() { return(quantity_type::from_value((std::numeric_limits<T>::lowest)())); }
36#endif
37 static const int digits = std::numeric_limits<T>::digits;
38 static const int digits10 = std::numeric_limits<T>::digits10;
39#ifndef BOOST_NO_CXX11_NUMERIC_LIMITS
40 static const int max_digits10 = std::numeric_limits<T>::max_digits10;
41#endif
42 static const bool is_signed = std::numeric_limits<T>::is_signed;
43 static const bool is_integer = std::numeric_limits<T>::is_integer;
44 static const bool is_exact = std::numeric_limits<T>::is_exact;
45 static const int radix = std::numeric_limits<T>::radix;
46 static quantity_type epsilon() { return(quantity_type::from_value(std::numeric_limits<T>::epsilon())); }
47 static quantity_type round_error() { return(quantity_type::from_value(std::numeric_limits<T>::round_error())); }
48 static const int min_exponent = std::numeric_limits<T>::min_exponent;
49 static const int min_exponent10 = std::numeric_limits<T>::min_exponent10;
50 static const int max_exponent = std::numeric_limits<T>::max_exponent;
51 static const int max_exponent10 = std::numeric_limits<T>::max_exponent10;
52 static const bool has_infinity = std::numeric_limits<T>::has_infinity;
53 static const bool has_quiet_NaN = std::numeric_limits<T>::has_quiet_NaN;
54 static const bool has_signaling_NaN = std::numeric_limits<T>::has_signaling_NaN;
55 static const bool has_denorm_loss = std::numeric_limits<T>::has_denorm_loss;
56 static quantity_type infinity() { return(quantity_type::from_value(std::numeric_limits<T>::infinity())); }
57 static quantity_type quiet_NaN() { return(quantity_type::from_value(std::numeric_limits<T>::quiet_NaN())); }
58 static quantity_type signaling_NaN() { return(quantity_type::from_value(std::numeric_limits<T>::signaling_NaN())); }
59 static quantity_type denorm_min() { return(quantity_type::from_value(std::numeric_limits<T>::denorm_min())); }
60 static const bool is_iec559 = std::numeric_limits<T>::is_iec559;
61 static const bool is_bounded = std::numeric_limits<T>::is_bounded;
62 static const bool is_modulo = std::numeric_limits<T>::is_modulo;
63 static const bool traps = std::numeric_limits<T>::traps;
64 static const bool tinyness_before = std::numeric_limits<T>::tinyness_before;
65#if defined(_STLP_STATIC_CONST_INIT_BUG)
66 static const int has_denorm = std::numeric_limits<T>::has_denorm;
67 static const int round_style = std::numeric_limits<T>::round_style;
68#else
69 static const float_denorm_style has_denorm = std::numeric_limits<T>::has_denorm;
70 static const float_round_style round_style = std::numeric_limits<T>::round_style;
71#endif
72};
73
74}
75
76#endif // BOOST_UNITS_LIMITS_HPP
77

source code of boost/boost/units/limits.hpp