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