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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