mirror of
https://github.com/boostorg/charconv.git
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113 lines
3.7 KiB
C++
113 lines
3.7 KiB
C++
// Copyright 2023 Matt Borland
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// Distributed under the Boost Software License, Version 1.0.
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// https://www.boost.org/LICENSE_1_0.txt
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#include <boost/config.hpp>
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#if !defined(BOOST_NO_CXX17_HDR_CHARCONV) && (!defined(__clang_major__) || (defined(__clang_major__) && __clang_major__ > 7))
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#include <boost/charconv.hpp>
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#include <boost/core/lightweight_test.hpp>
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#include <charconv>
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#include <type_traits>
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#include <limits>
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#include <cstring>
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#include <cstdint>
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#include <cerrno>
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#include <utility>
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#include <system_error>
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template <typename T>
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void test()
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{
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// Signed 0
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char buffer1_stl[64] {};
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char buffer1_boost[64] {};
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T v1 = static_cast<T>(-0);
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auto r1_stl = std::to_chars(buffer1_stl, buffer1_stl + sizeof(buffer1_stl) - 1, v1);
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auto r1_boost = boost::charconv::to_chars(buffer1_boost, buffer1_boost + sizeof(buffer1_boost) - 1, v1);
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BOOST_TEST_EQ(r1_stl.ptr, buffer1_stl + 1);
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BOOST_TEST_EQ(r1_boost.ptr, buffer1_boost + 1);
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BOOST_TEST_CSTR_EQ(buffer1_stl, "0");
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BOOST_TEST_CSTR_EQ(buffer1_boost, "0");
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// Binary
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char buffer2_stl[64] {};
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char buffer2_boost[64] {};
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T v2 = static_cast<T>(42);
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auto r2_stl = std::to_chars(buffer2_stl, buffer2_stl + sizeof(buffer2_stl) - 1, v2, 2);
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auto r2_boost = boost::charconv::to_chars(buffer2_boost, buffer2_boost + sizeof(buffer2_boost) - 1, v2, 2);
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BOOST_TEST_EQ(r2_stl.ptr, buffer2_stl + 6);
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BOOST_TEST_EQ(r2_boost.ptr, buffer2_boost + 6);
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BOOST_TEST_CSTR_EQ(buffer2_stl, "101010");
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BOOST_TEST_CSTR_EQ(buffer2_boost, "101010");
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// Base 10
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char buffer3_stl[64] {};
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char buffer3_boost[64] {};
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T v3 = static_cast<T>(120);
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auto r3_stl = std::to_chars(buffer3_stl, buffer3_stl + sizeof(buffer3_stl) - 1, v3);
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auto r3_boost = boost::charconv::to_chars(buffer3_boost, buffer3_boost + sizeof(buffer3_boost) - 1, v3);
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BOOST_TEST_EQ(r3_stl.ptr, buffer3_stl + 3);
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BOOST_TEST_EQ(r3_boost.ptr, buffer3_boost + 3);
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BOOST_TEST_CSTR_EQ(buffer3_stl, "120");
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BOOST_TEST_CSTR_EQ(buffer3_boost, "120");
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// Hexadecimal
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char buffer4_stl[64] {};
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char buffer4_boost[64] {};
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T v4 = static_cast<T>(44);
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auto r4_stl = std::to_chars(buffer4_stl, buffer4_stl + sizeof(buffer4_stl) - 1, v4, 16);
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auto r4_boost = boost::charconv::to_chars(buffer4_boost, buffer4_boost + sizeof(buffer4_boost) - 1, v4, 16);
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BOOST_TEST_EQ(r4_stl.ptr, buffer4_stl + 2);
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BOOST_TEST_EQ(r4_boost.ptr, buffer4_boost + 2);
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BOOST_TEST_CSTR_EQ(buffer4_stl, "2c");
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BOOST_TEST_CSTR_EQ(buffer4_boost, "2c");
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// Base 28
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char buffer5_stl[64] {};
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char buffer5_boost[64] {};
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T v5 = static_cast<T>(100);
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auto r5_stl = std::to_chars(buffer5_stl, buffer5_stl + sizeof(buffer5_stl) - 1, v5, 28);
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auto r5_boost = boost::charconv::to_chars(buffer5_boost, buffer5_boost + sizeof(buffer5_boost) - 1, v5, 28);
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BOOST_TEST_EQ(r5_stl.ptr, buffer5_stl + 2);
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BOOST_TEST_EQ(r5_boost.ptr, buffer5_boost + 2);
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BOOST_TEST_CSTR_EQ(buffer5_stl, "3g");
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BOOST_TEST_CSTR_EQ(buffer5_boost, "3g");
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// Overflow
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char buffer6_stl[1] {};
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char buffer6_boost[1] {};
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T v6 = static_cast<T>(100);
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auto r6_stl = std::to_chars(buffer6_stl, buffer6_stl + sizeof(buffer6_stl) - 1, v6);
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auto r6_boost = boost::charconv::to_chars(buffer6_boost, buffer6_boost + sizeof(buffer6_boost) - 1, v6);
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BOOST_TEST_EQ(r6_stl.ptr, r6_stl.ptr);
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BOOST_TEST_EQ(r6_boost.ptr, r6_boost.ptr);
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}
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int main()
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{
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test<char>();
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test<signed char>();
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test<unsigned char>();
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test<short>();
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test<unsigned short>();
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test<int>();
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test<unsigned>();
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test<long>();
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test<unsigned long>();
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test<long long>();
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test<unsigned long long>();
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return boost::report_errors();
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}
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#else
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int main()
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{
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return 0;
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}
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#endif
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