llvm-project/libcxx/test/strings/string.conversions/stold.pass.cpp

169 lines
3.3 KiB
C++

//===----------------------------------------------------------------------===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
// <string>
// long double stold(const string& str, size_t *idx = 0);
// long double stold(const wstring& str, size_t *idx = 0);
#include <iostream>
#include <string>
#include <cmath>
#include <cassert>
int main()
{
assert(std::stold("0") == 0);
assert(std::stold(L"0") == 0);
assert(std::stold("-0") == 0);
assert(std::stold(L"-0") == 0);
assert(std::stold("-10") == -10);
assert(std::stold(L"-10.5") == -10.5);
assert(std::stold(" 10") == 10);
assert(std::stold(L" 10") == 10);
size_t idx = 0;
assert(std::stold("10g", &idx) == 10);
assert(idx == 2);
idx = 0;
assert(std::stold(L"10g", &idx) == 10);
assert(idx == 2);
try
{
assert(std::stold("1.e60", &idx) == 1.e60L);
assert(idx == 5);
}
catch (const std::out_of_range&)
{
assert(false);
}
try
{
assert(std::stold(L"1.e60", &idx) == 1.e60L);
assert(idx == 5);
}
catch (const std::out_of_range&)
{
assert(false);
}
idx = 0;
try
{
assert(std::stold("1.e6000", &idx) == INFINITY);
assert(false);
}
catch (const std::out_of_range&)
{
assert(idx == 0);
}
try
{
assert(std::stold(L"1.e6000", &idx) == INFINITY);
assert(false);
}
catch (const std::out_of_range&)
{
assert(idx == 0);
}
try
{
assert(std::stold("INF", &idx) == INFINITY);
assert(idx == 3);
}
catch (const std::out_of_range&)
{
assert(false);
}
idx = 0;
try
{
assert(std::stold(L"INF", &idx) == INFINITY);
assert(idx == 3);
}
catch (const std::out_of_range&)
{
assert(false);
}
idx = 0;
try
{
assert(std::isnan(std::stold("NAN", &idx)));
assert(idx == 3);
}
catch (const std::out_of_range&)
{
assert(false);
}
idx = 0;
try
{
assert(std::isnan(std::stold(L"NAN", &idx)));
assert(idx == 3);
}
catch (const std::out_of_range&)
{
assert(false);
}
idx = 0;
try
{
std::stold("", &idx);
assert(false);
}
catch (const std::invalid_argument&)
{
assert(idx == 0);
}
try
{
std::stold(L"", &idx);
assert(false);
}
catch (const std::invalid_argument&)
{
assert(idx == 0);
}
try
{
std::stold(" - 8", &idx);
assert(false);
}
catch (const std::invalid_argument&)
{
assert(idx == 0);
}
try
{
std::stold(L" - 8", &idx);
assert(false);
}
catch (const std::invalid_argument&)
{
assert(idx == 0);
}
try
{
std::stold("a1", &idx);
assert(false);
}
catch (const std::invalid_argument&)
{
assert(idx == 0);
}
try
{
std::stold(L"a1", &idx);
assert(false);
}
catch (const std::invalid_argument&)
{
assert(idx == 0);
}
}