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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
160 lines
4.1 KiB
C++
160 lines
4.1 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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// <string>
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// double stod(const string& str, size_t *idx = 0);
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// double stod(const wstring& str, size_t *idx = 0);
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#include <string>
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#include <cmath>
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#include <cassert>
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#include <stdexcept>
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#include "test_macros.h"
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int main(int, char**)
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{
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// char
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{
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assert(std::stod("0") == 0);
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assert(std::stod("-0") == 0);
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assert(std::stod("-10") == -10);
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assert(std::stod(" 10") == 10);
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{
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size_t idx = 0;
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assert(std::stod("10g", &idx) == 10);
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assert(idx == 2);
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}
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{
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size_t idx = 0;
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assert(std::stod("1.e60", &idx) == 1.e60);
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assert(idx == 5);
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}
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{
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size_t idx = 0;
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assert(std::stod("INF", &idx) == INFINITY);
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assert(idx == 3);
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}
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{
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size_t idx = 0;
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assert(std::isnan(std::stod("NAN", &idx)));
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assert(idx == 3);
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}
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#ifndef TEST_HAS_NO_EXCEPTIONS
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{
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size_t idx = 0;
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try {
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assert(std::stod("1.e360", &idx) == INFINITY);
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assert(false);
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} catch (const std::out_of_range&) {
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assert(idx == 0);
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}
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}
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{
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size_t idx = 0;
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try {
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std::stod("", &idx);
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assert(false);
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} catch (const std::invalid_argument&) {
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assert(idx == 0);
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}
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}
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{
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size_t idx = 0;
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try {
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std::stod(" - 8", &idx);
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assert(false);
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} catch (const std::invalid_argument&) {
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assert(idx == 0);
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}
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}
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{
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size_t idx = 0;
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try {
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std::stod("a1", &idx);
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assert(false);
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} catch (const std::invalid_argument&) {
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assert(idx == 0);
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}
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}
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#endif // TEST_HAS_NO_EXCEPTIONS
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}
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// wchar_t
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#ifndef TEST_HAS_NO_WIDE_CHARACTERS
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{
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assert(std::stod(L"0") == 0);
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assert(std::stod(L"-0") == 0);
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assert(std::stod(L"-10.5") == -10.5);
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assert(std::stod(L" 10") == 10);
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{
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size_t idx = 0;
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assert(std::stod(L"10g", &idx) == 10);
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assert(idx == 2);
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}
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{
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size_t idx = 0;
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assert(std::stod(L"1.e60", &idx) == 1.e60);
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assert(idx == 5);
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}
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{
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size_t idx = 0;
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assert(std::stod(L"INF", &idx) == INFINITY);
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assert(idx == 3);
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}
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{
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size_t idx = 0;
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assert(std::isnan(std::stod(L"NAN", &idx)));
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assert(idx == 3);
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}
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#ifndef TEST_HAS_NO_EXCEPTIONS
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{
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size_t idx = 0;
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try {
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assert(std::stod(L"1.e360", &idx) == INFINITY);
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assert(false);
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} catch (const std::out_of_range&) {
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assert(idx == 0);
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}
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}
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{
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size_t idx = 0;
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try {
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std::stod(L"", &idx);
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assert(false);
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} catch (const std::invalid_argument&) {
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assert(idx == 0);
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}
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}
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{
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size_t idx = 0;
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try {
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std::stod(L" - 8", &idx);
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assert(false);
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} catch (const std::invalid_argument&) {
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assert(idx == 0);
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}
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}
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{
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size_t idx = 0;
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try {
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std::stod(L"a1", &idx);
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assert(false);
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} catch (const std::invalid_argument&) {
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assert(idx == 0);
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}
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}
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#endif // TEST_HAS_NO_EXCEPTIONS
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}
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#endif // TEST_HAS_NO_WIDE_CHARACTERS
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return 0;
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}
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