1 | /* Boost interval/detail/test_input.hpp file |
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2 | * |
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3 | * Copyright 2002 Hervé Brönnimann, Guillaume Melquiond, Sylvain Pion |
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4 | * |
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5 | * Distributed under the Boost Software License, Version 1.0. |
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6 | * (See accompanying file LICENSE_1_0.txt or |
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7 | * copy at http://www.boost.org/LICENSE_1_0.txt) |
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8 | */ |
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9 | |
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10 | #ifndef BOOST_NUMERIC_INTERVAL_DETAIL_TEST_INPUT_HPP |
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11 | #define BOOST_NUMERIC_INTERVAL_DETAIL_TEST_INPUT_HPP |
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12 | |
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13 | #include <boost/numeric/interval/detail/interval_prototype.hpp> |
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14 | |
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15 | namespace boost { |
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16 | namespace numeric { |
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17 | namespace interval_lib { |
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18 | namespace user { |
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19 | |
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20 | template<class T> inline |
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21 | bool is_zero(T const &v) { return v == static_cast<T>(0); } |
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22 | |
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23 | template<class T> inline |
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24 | bool is_neg (T const &v) { return v < static_cast<T>(0); } |
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25 | |
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26 | template<class T> inline |
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27 | bool is_pos (T const &v) { return v > static_cast<T>(0); } |
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28 | |
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29 | } // namespace user |
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30 | |
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31 | namespace detail { |
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32 | |
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33 | template<class T, class Policies> inline |
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34 | bool test_input(const interval<T, Policies>& x) { |
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35 | typedef typename Policies::checking checking; |
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36 | return checking::is_empty(x.lower(), x.upper()); |
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37 | } |
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38 | |
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39 | template<class T, class Policies1, class Policies2> inline |
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40 | bool test_input(const interval<T, Policies1>& x, const interval<T, Policies2>& y) { |
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41 | typedef typename Policies1::checking checking1; |
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42 | typedef typename Policies2::checking checking2; |
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43 | return checking1::is_empty(x.lower(), x.upper()) || |
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44 | checking2::is_empty(y.lower(), y.upper()); |
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45 | } |
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46 | |
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47 | template<class T, class Policies> inline |
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48 | bool test_input(const T& x, const interval<T, Policies>& y) { |
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49 | typedef typename Policies::checking checking; |
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50 | return checking::is_nan(x) || checking::is_empty(y.lower(), y.upper()); |
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51 | } |
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52 | |
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53 | template<class T, class Policies> inline |
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54 | bool test_input(const interval<T, Policies>& x, const T& y) { |
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55 | typedef typename Policies::checking checking; |
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56 | return checking::is_empty(x.lower(), x.upper()) || checking::is_nan(y); |
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57 | } |
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58 | |
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59 | template<class T, class Policies> inline |
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60 | bool test_input(const T& x) { |
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61 | typedef typename Policies::checking checking; |
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62 | return checking::is_nan(x); |
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63 | } |
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64 | |
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65 | template<class T, class Policies> inline |
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66 | bool test_input(const T& x, const T& y) { |
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67 | typedef typename Policies::checking checking; |
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68 | return checking::is_nan(x) || checking::is_nan(y); |
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69 | } |
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70 | |
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71 | } // namespace detail |
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72 | } // namespace interval_lib |
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73 | } // namespace numeric |
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74 | } // namespace boost |
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75 | |
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76 | #endif // BOOST_NUMERIC_INTERVAL_DETAIL_TEST_INPUT_HPP |
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