59 lines
1.5 KiB
C++
59 lines
1.5 KiB
C++
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// Copyright 2012 Daniel James.
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// Distributed under the Boost Software License, Version 1.0. (See accompanying
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// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
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#include <boost/static_assert.hpp>
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#include <boost/type_traits/is_same.hpp>
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#include <boost/type_traits/is_convertible.hpp>
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#include <cmath>
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namespace test
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{
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template <class T1>
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struct check_return_type
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{
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template <class T2>
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static void equals(T2)
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{
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BOOST_STATIC_ASSERT((boost::is_same<T1, T2>::value));
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}
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template <class T2>
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static void equals_ref(T2&)
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{
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BOOST_STATIC_ASSERT((boost::is_same<T1, T2>::value));
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}
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template <class T2>
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static void convertible(T2)
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{
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BOOST_STATIC_ASSERT((boost::is_convertible<T2, T1>::value));
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}
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};
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}
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int main() {
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float f = 0;
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double d = 0;
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long double l = 0;
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test::check_return_type<float>::equals(std::ldexp(f, 0));
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test::check_return_type<double>::equals(std::ldexp(d, 0));
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test::check_return_type<long double>::equals(std::ldexp(l, 0));
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int dummy = 0;
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test::check_return_type<float>::equals(std::frexp(f, &dummy));
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test::check_return_type<double>::equals(std::frexp(d, &dummy));
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test::check_return_type<long double>::equals(std::frexp(l, &dummy));
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#if BOOST_HASH_USE_FPCLASSIFY
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int (*fpc1)(float) = std::fpclassify;
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int (*fpc2)(double) = std::fpclassify;
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int (*fpc3)(long double) = std::fpclassify;
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#endif
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}
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