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/* 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
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