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// Range v3 library
//
// Copyright Eric Niebler 2014-present
// Copyright Google LLC 2020-present
//
// Use, modification and distribution is subject to 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)
//
// Project home: https://github.com/ericniebler/range-v3
#include <sstream>
#include <string>
#include <vector>
#include <range/v3/algorithm/copy.hpp>
#include <range/v3/iterator/stream_iterators.hpp>
#include <range/v3/range/conversion.hpp>
#include <range/v3/view/for_each.hpp>
#include <range/v3/view/reverse.hpp>
#include <range/v3/view/sliding.hpp>
#include <range/v3/view/stride.hpp>
#include "../simple_test.hpp"
#include "../test_utils.hpp"
namespace
{
#if defined(__BYTE_ORDER__) && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__
template<typename>
std::string endian_adjust(std::string const & s)
{
return s;
}
#else
template<typename T>
std::string endian_adjust(std::string const & s)
{
namespace rv = ranges::views;
return rv::sliding(s, static_cast<std::ptrdiff_t>(sizeof(T))) //
| rv::stride(static_cast<std::ptrdiff_t>(sizeof(T))) //
| rv::for_each([](auto x) { return x | rv::reverse; }) //
| ranges::to<std::string>;
}
#endif // endianness
} // namespace
int main()
{
{
constexpr auto expected = "\x21\x22\x23\x24";
{
auto const input = std::vector<char>{0x21, 0x22, 0x23, 0x24};
auto output = std::ostringstream();
ranges::copy(input, ranges::unformatted_ostream_iterator<>(output));
auto const actual = output.str();
CHECK(actual == expected);
}
{
auto const input = std::vector<unsigned short>{0x2122, 0x2324};
auto output = std::ostringstream();
ranges::copy(input, ranges::unformatted_ostream_iterator<>(output));
auto const actual = endian_adjust<unsigned short>(output.str());
CHECK(actual == expected);
}
#if __cplusplus > 201703L
{
// float computed to be *exactly* 0x21222324.
auto const input = std::vector<float>{0x1.4446480000000000179Dp-61f};
auto output = std::ostringstream();
ranges::copy(input, ranges::unformatted_ostream_iterator<>(output));
auto const actual = endian_adjust<float>(output.str());
CHECK(actual == expected);
}
#endif // __cplusplus > 201703L
}
{
constexpr auto expected = "\x21\x22\x23\x24\x25\x26\x27\x28";
{
auto const input = std::vector<unsigned int>{0x21222324, 0x25262728};
auto output = std::ostringstream();
ranges::copy(input, ranges::unformatted_ostream_iterator<>(output));
auto const actual = endian_adjust<unsigned int>(output.str());
CHECK(actual == expected);
}
#if __cplusplus > 201703L
{
// floats computed to be *exactly* 0x21222324 and 0x25262728.
auto const input =
std::vector<float>{0x1.4446480000000000179Dp-61f, 0x1.4C4E5p-53f};
auto output = std::ostringstream();
ranges::copy(input, ranges::unformatted_ostream_iterator<>(output));
auto const actual = endian_adjust<unsigned int>(output.str());
CHECK(actual == expected);
}
{
// double computed to be *exactly* 0x2122232425262728.
auto const input = std::vector<double>{0x1.223242526272800006F2p-493};
auto output = std::ostringstream();
ranges::copy(input, ranges::unformatted_ostream_iterator<>(output));
auto const actual = endian_adjust<double>(output.str());
CHECK(actual == expected);
}
#endif // __cplusplus > 201703L
}
return ::test_result();
}
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