93 lines
2.1 KiB
C++
93 lines
2.1 KiB
C++
//===----------------------------------------------------------------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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// UNSUPPORTED: c++03, c++11, c++14
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// ADDITIONAL_COMPILE_FLAGS(has-fconstexpr-steps): -fconstexpr-steps=12712420
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// <charconv>
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// constexpr from_chars_result from_chars(const char* first, const char* last,
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// Integral& value, int base = 10)
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#include <charconv>
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#include "test_macros.h"
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#include "charconv_test_helpers.h"
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template <typename T>
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struct test_basics : roundtrip_test_base<T>
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{
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using roundtrip_test_base<T>::test;
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TEST_CONSTEXPR_CXX23 void operator()()
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{
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test(0);
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test(42);
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test(32768);
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test(0, 10);
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test(42, 10);
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test(32768, 10);
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test(0xf, 16);
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test(0xdeadbeaf, 16);
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test(0755, 8);
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for (int b = 2; b < 37; ++b)
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{
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using xl = std::numeric_limits<T>;
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test(1, b);
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test(-1, b);
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test(xl::lowest(), b);
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test((xl::max)(), b);
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test((xl::max)() / 2, b);
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}
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}
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};
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template <typename T>
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struct test_signed : roundtrip_test_base<T>
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{
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using roundtrip_test_base<T>::test;
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TEST_CONSTEXPR_CXX23 void operator()()
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{
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test(-1);
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test(-12);
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test(-1, 10);
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test(-12, 10);
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test(-21734634, 10);
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test(-2647, 2);
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test(-0xcc1, 16);
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for (int b = 2; b < 37; ++b)
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{
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using xl = std::numeric_limits<T>;
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test(0, b);
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test(xl::lowest(), b);
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test((xl::max)(), b);
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}
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}
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};
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TEST_CONSTEXPR_CXX23 bool test()
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{
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run<test_basics>(integrals);
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run<test_signed>(all_signed);
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return true;
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}
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int main(int, char**) {
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test();
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#if TEST_STD_VER > 20
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static_assert(test());
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#endif
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return 0;
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}
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