12345678910111213141516171819202122232425262728293031323334353637383940414243444546474849505152535455565758 |
- // Copyright 2012 Daniel James.
- // 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)
- #include <boost/static_assert.hpp>
- #include <boost/type_traits/is_same.hpp>
- #include <boost/type_traits/is_convertible.hpp>
- #include <cmath>
- namespace test
- {
- template <class T1>
- struct check_return_type
- {
- template <class T2>
- static void equals(T2)
- {
- BOOST_STATIC_ASSERT((boost::is_same<T1, T2>::value));
- }
- template <class T2>
- static void equals_ref(T2&)
- {
- BOOST_STATIC_ASSERT((boost::is_same<T1, T2>::value));
- }
- template <class T2>
- static void convertible(T2)
- {
- BOOST_STATIC_ASSERT((boost::is_convertible<T2, T1>::value));
- }
- };
- }
- int main() {
- float f = 0;
- double d = 0;
- long double l = 0;
- test::check_return_type<float>::equals(std::ldexp(f, 0));
- test::check_return_type<double>::equals(std::ldexp(d, 0));
- test::check_return_type<long double>::equals(std::ldexp(l, 0));
- int dummy = 0;
- test::check_return_type<float>::equals(std::frexp(f, &dummy));
- test::check_return_type<double>::equals(std::frexp(d, &dummy));
- test::check_return_type<long double>::equals(std::frexp(l, &dummy));
- #if BOOST_HASH_USE_FPCLASSIFY
- int (*fpc1)(float) = std::fpclassify;
- int (*fpc2)(double) = std::fpclassify;
- int (*fpc3)(long double) = std::fpclassify;
- #endif
- }
|