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// Copyright 2024 Matt Borland
// Distributed under the Boost Software License, Version 1.0.
// https://www.boost.org/LICENSE_1_0.txt
#include <boost/charconv.hpp>
#include <boost/core/lightweight_test.hpp>
template <typename T>
void overflow_spot_value(const std::string& buffer, boost::charconv::chars_format fmt = boost::charconv::chars_format::general)
{
auto v = static_cast<T>(42.L);
auto r = boost::charconv::from_chars(buffer.c_str(), buffer.c_str() + std::strlen(buffer.c_str()), v, fmt);
BOOST_TEST(v == static_cast<T>(42.L)) && BOOST_TEST(r.ec == std::errc::result_out_of_range);
}
template <typename T>
void test()
{
const auto format_list = {boost::charconv::chars_format::general, boost::charconv::chars_format::scientific, boost::charconv::chars_format::hex};
for (const auto format : format_list)
{
if (format != boost::charconv::chars_format::hex)
{
overflow_spot_value<T>("1e99999", format);
overflow_spot_value<T>("-1e99999", format);
overflow_spot_value<T>("1e-99999", format);
overflow_spot_value<T>("-1.0e-99999", format);
}
else
{
overflow_spot_value<T>("1p99999", format);
overflow_spot_value<T>("-1p99999", format);
overflow_spot_value<T>("1p-99999", format);
overflow_spot_value<T>("-1.0p-99999", format);
}
}
}
int main()
{
test<float>();
test<double>();
#ifndef BOOST_CHARCONV_UNSUPPORTED_LONG_DOUBLE
test<long double>();
#endif
#ifdef BOOST_CHARCONV_HAS_QUADMATH
test<__float128>();
#endif
#ifdef BOOST_CHARCONV_HAS_FLOAT16
test<std::float16_t>();
#endif
#ifdef BOOST_CHARCONV_HAS_FLOAT32
test<std::float32_t>();
#endif
#ifdef BOOST_CHARCONV_HAS_FLOAT64
test<std::float64_t>();
#endif
#if defined(BOOST_CHARCONV_HAS_STDFLOAT128) && defined(BOOST_CHARCONV_HAS_QUADMATH)
test<std::float128_t>();
#endif
#ifdef BOOST_CHARCONV_HAS_BRAINFLOAT16
test<std::bfloat16_t>();
#endif
return boost::report_errors();
}
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