| /* Boost interval/detail/test_input.hpp file |
| * |
| * Copyright 2002 Hervé Brönnimann, Guillaume Melquiond, Sylvain Pion |
| * |
| * Distributed under the Boost Software License, Version 1.0. |
| * (See accompanying file LICENSE_1_0.txt or |
| * copy at http://www.boost.org/LICENSE_1_0.txt) |
| */ |
| |
| #ifndef BOOST_NUMERIC_INTERVAL_DETAIL_TEST_INPUT_HPP |
| #define BOOST_NUMERIC_INTERVAL_DETAIL_TEST_INPUT_HPP |
| |
| #include <boost/numeric/interval/detail/interval_prototype.hpp> |
| |
| namespace boost { |
| namespace numeric { |
| namespace interval_lib { |
| namespace user { |
| |
| template<class T> inline |
| bool is_zero(T const &v) { return v == static_cast<T>(0); } |
| |
| template<class T> inline |
| bool is_neg (T const &v) { return v < static_cast<T>(0); } |
| |
| template<class T> inline |
| bool is_pos (T const &v) { return v > static_cast<T>(0); } |
| |
| } // namespace user |
| |
| namespace detail { |
| |
| template<class T, class Policies> inline |
| bool test_input(const interval<T, Policies>& x) { |
| typedef typename Policies::checking checking; |
| return checking::is_empty(x.lower(), x.upper()); |
| } |
| |
| template<class T, class Policies1, class Policies2> inline |
| bool test_input(const interval<T, Policies1>& x, const interval<T, Policies2>& y) { |
| typedef typename Policies1::checking checking1; |
| typedef typename Policies2::checking checking2; |
| return checking1::is_empty(x.lower(), x.upper()) || |
| checking2::is_empty(y.lower(), y.upper()); |
| } |
| |
| template<class T, class Policies> inline |
| bool test_input(const T& x, const interval<T, Policies>& y) { |
| typedef typename Policies::checking checking; |
| return checking::is_nan(x) || checking::is_empty(y.lower(), y.upper()); |
| } |
| |
| template<class T, class Policies> inline |
| bool test_input(const interval<T, Policies>& x, const T& y) { |
| typedef typename Policies::checking checking; |
| return checking::is_empty(x.lower(), x.upper()) || checking::is_nan(y); |
| } |
| |
| template<class T, class Policies> inline |
| bool test_input(const T& x) { |
| typedef typename Policies::checking checking; |
| return checking::is_nan(x); |
| } |
| |
| template<class T, class Policies> inline |
| bool test_input(const T& x, const T& y) { |
| typedef typename Policies::checking checking; |
| return checking::is_nan(x) || checking::is_nan(y); |
| } |
| |
| } // namespace detail |
| } // namespace interval_lib |
| } // namespace numeric |
| } // namespace boost |
| |
| #endif // BOOST_NUMERIC_INTERVAL_DETAIL_TEST_INPUT_HPP |