167 lines
3.3 KiB
C++
167 lines
3.3 KiB
C++
//===----------------------------------------------------------------------===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is dual licensed under the MIT and the University of Illinois Open
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// Source Licenses. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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// <string>
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// float stof(const string& str, size_t *idx = 0);
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// float stof(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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int main()
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{
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assert(std::stof("0") == 0);
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assert(std::stof(L"0") == 0);
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assert(std::stof("-0") == 0);
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assert(std::stof(L"-0") == 0);
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assert(std::stof("-10") == -10);
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assert(std::stof(L"-10.5") == -10.5);
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assert(std::stof(" 10") == 10);
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assert(std::stof(L" 10") == 10);
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size_t idx = 0;
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assert(std::stof("10g", &idx) == 10);
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assert(idx == 2);
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idx = 0;
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assert(std::stof(L"10g", &idx) == 10);
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assert(idx == 2);
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try
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{
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assert(std::stof("1.e60", &idx) == INFINITY);
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assert(idx == 5);
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}
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catch (const std::out_of_range&)
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{
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assert(false);
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}
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try
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{
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assert(std::stof(L"1.e60", &idx) == INFINITY);
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assert(idx == 5);
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}
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catch (const std::out_of_range&)
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{
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assert(false);
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}
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idx = 0;
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try
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{
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assert(std::stof("1.e360", &idx) == INFINITY);
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assert(false);
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}
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catch (const std::out_of_range&)
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{
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assert(idx == 0);
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}
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try
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{
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assert(std::stof(L"1.e360", &idx) == INFINITY);
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assert(false);
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}
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catch (const std::out_of_range&)
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{
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assert(idx == 0);
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}
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try
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{
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assert(std::stof("INF", &idx) == INFINITY);
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assert(idx == 3);
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}
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catch (const std::out_of_range&)
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{
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assert(false);
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}
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idx = 0;
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try
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{
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assert(std::stof(L"INF", &idx) == INFINITY);
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assert(idx == 3);
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}
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catch (const std::out_of_range&)
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{
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assert(false);
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}
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idx = 0;
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try
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{
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assert(std::isnan(std::stof("NAN", &idx)));
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assert(idx == 3);
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}
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catch (const std::out_of_range&)
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{
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assert(false);
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}
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idx = 0;
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try
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{
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assert(std::isnan(std::stof(L"NAN", &idx)));
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assert(idx == 3);
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}
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catch (const std::out_of_range&)
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{
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assert(false);
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}
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idx = 0;
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try
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{
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std::stof("", &idx);
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assert(false);
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}
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catch (const std::invalid_argument&)
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{
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assert(idx == 0);
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}
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try
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{
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std::stof(L"", &idx);
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assert(false);
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}
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catch (const std::invalid_argument&)
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{
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assert(idx == 0);
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}
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try
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{
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std::stof(" - 8", &idx);
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assert(false);
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}
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catch (const std::invalid_argument&)
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{
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assert(idx == 0);
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}
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try
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{
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std::stof(L" - 8", &idx);
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assert(false);
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}
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catch (const std::invalid_argument&)
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{
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assert(idx == 0);
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}
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try
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{
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std::stof("a1", &idx);
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assert(false);
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}
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catch (const std::invalid_argument&)
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{
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assert(idx == 0);
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}
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try
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{
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std::stof(L"a1", &idx);
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assert(false);
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}
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catch (const std::invalid_argument&)
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{
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assert(idx == 0);
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}
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}
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