f4c1258d56
Some embedded platforms do not wish to support the C library functionality for handling wchar_t because they have no use for it. It makes sense for libc++ to work properly on those platforms, so this commit adds a carve-out of functionality for wchar_t. Unfortunately, unlike some other carve-outs (e.g. random device), this patch touches several parts of the library. However, despite the wide impact of this patch, I still think it is important to support this configuration since it makes it much simpler to port libc++ to some embedded platforms. Differential Revision: https://reviews.llvm.org/D111265
127 lines
3.2 KiB
C++
127 lines
3.2 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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// XFAIL: libcpp-has-no-wide-characters
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// <string>
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// wstring to_wstring(int val);
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// wstring to_wstring(unsigned val);
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// wstring to_wstring(long val);
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// wstring to_wstring(unsigned long val);
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// wstring to_wstring(long long val);
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// wstring to_wstring(unsigned long long val);
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// wstring to_wstring(float val);
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// wstring to_wstring(double val);
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// wstring to_wstring(long double val);
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#include <string>
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#include <cassert>
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#include <limits>
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#include "parse_integer.h"
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#include "test_macros.h"
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template <class T>
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void
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test_signed()
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{
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{
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std::wstring s = std::to_wstring(T(0));
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assert(s.size() == 1);
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assert(s[s.size()] == 0);
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assert(s == L"0");
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}
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{
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std::wstring s = std::to_wstring(T(12345));
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assert(s.size() == 5);
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assert(s[s.size()] == 0);
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assert(s == L"12345");
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}
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{
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std::wstring s = std::to_wstring(T(-12345));
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assert(s.size() == 6);
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assert(s[s.size()] == 0);
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assert(s == L"-12345");
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}
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{
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std::wstring s = std::to_wstring(std::numeric_limits<T>::max());
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assert(s.size() == std::numeric_limits<T>::digits10 + 1);
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T t = parse_integer<T>(s);
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assert(t == std::numeric_limits<T>::max());
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}
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{
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std::wstring s = std::to_wstring(std::numeric_limits<T>::min());
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T t = parse_integer<T>(s);
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assert(t == std::numeric_limits<T>::min());
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}
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}
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template <class T>
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void
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test_unsigned()
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{
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{
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std::wstring s = std::to_wstring(T(0));
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assert(s.size() == 1);
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assert(s[s.size()] == 0);
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assert(s == L"0");
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}
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{
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std::wstring s = std::to_wstring(T(12345));
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assert(s.size() == 5);
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assert(s[s.size()] == 0);
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assert(s == L"12345");
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}
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{
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std::wstring s = std::to_wstring(std::numeric_limits<T>::max());
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assert(s.size() == std::numeric_limits<T>::digits10 + 1);
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T t = parse_integer<T>(s);
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assert(t == std::numeric_limits<T>::max());
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}
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}
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template <class T>
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void
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test_float()
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{
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{
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std::wstring s = std::to_wstring(T(0));
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assert(s.size() == 8);
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assert(s[s.size()] == 0);
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assert(s == L"0.000000");
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}
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{
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std::wstring s = std::to_wstring(T(12345));
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assert(s.size() == 12);
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assert(s[s.size()] == 0);
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assert(s == L"12345.000000");
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}
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{
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std::wstring s = std::to_wstring(T(-12345));
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assert(s.size() == 13);
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assert(s[s.size()] == 0);
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assert(s == L"-12345.000000");
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}
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}
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int main(int, char**)
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{
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test_signed<int>();
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test_signed<long>();
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test_signed<long long>();
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test_unsigned<unsigned>();
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test_unsigned<unsigned long>();
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test_unsigned<unsigned long long>();
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test_float<float>();
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test_float<double>();
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test_float<long double>();
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return 0;
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}
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