test/std/utilities/charconv/charconv.to.chars/integral.pass.cpp

//===----------------------------------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//

// UNSUPPORTED: c++98, c++03
// UNSUPPORTED: !libc++ && c++11
// UNSUPPORTED: !libc++ && c++14

// XFAIL: with_system_cxx_lib=macosx10.14
// XFAIL: with_system_cxx_lib=macosx10.13
// XFAIL: with_system_cxx_lib=macosx10.12
// XFAIL: with_system_cxx_lib=macosx10.11
// XFAIL: with_system_cxx_lib=macosx10.10
// XFAIL: with_system_cxx_lib=macosx10.9
// XFAIL: with_system_cxx_lib=macosx10.8
// XFAIL: with_system_cxx_lib=macosx10.7

// <charconv>

// to_chars_result to_chars(char* first, char* last, Integral value,
//                          int base = 10)

#include "test_macros.h"
#include "charconv_test_helpers.h"

template <typename T>
struct test_basics : to_chars_test_base<T>
{
    using to_chars_test_base<T>::test;
    using to_chars_test_base<T>::test_value;

    void operator()()
    {
        test(0, "0");
        test(42, "42");
        test(32768, "32768");
        test(0, "0", 10);
        test(42, "42", 10);
        test(32768, "32768", 10);
        test(0xf, "f", 16);
        test(0xdeadbeaf, "deadbeaf", 16);
        test(0755, "755", 8);

        for (int b = 2; b < 37; ++b)
        {
            using xl = std::numeric_limits<T>;

            test_value(1, b);
            test_value(xl::lowest(), b);
            test_value((xl::max)(), b);
            test_value((xl::max)() / 2, b);
        }
    }
};

template <typename T>
struct test_signed : to_chars_test_base<T>
{
    using to_chars_test_base<T>::test;
    using to_chars_test_base<T>::test_value;

    void operator()()
    {
        test(-1, "-1");
        test(-12, "-12");
        test(-1, "-1", 10);
        test(-12, "-12", 10);
        test(-21734634, "-21734634", 10);
        test(-2647, "-101001010111", 2);
        test(-0xcc1, "-cc1", 16);

        for (int b = 2; b < 37; ++b)
        {
            using xl = std::numeric_limits<T>;

            test_value(0, b);
            test_value(xl::lowest(), b);
            test_value((xl::max)(), b);
        }
    }
};

int main(int, char**)
{
    run<test_basics>(integrals);
    run<test_signed>(all_signed);

  return 0;
}