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