1// { dg-options "-std=gnu++11" } 2// { dg-require-string-conversions "" } 3 4// 2008-06-15 Paolo Carlini <paolo.carlini@oracle.com> 5 6// Copyright (C) 2008-2015 Free Software Foundation, Inc. 7// 8// This file is part of the GNU ISO C++ Library. This library is free 9// software; you can redistribute it and/or modify it under the 10// terms of the GNU General Public License as published by the 11// Free Software Foundation; either version 3, or (at your option) 12// any later version. 13 14// This library is distributed in the hope that it will be useful, 15// but WITHOUT ANY WARRANTY; without even the implied warranty of 16// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 17// GNU General Public License for more details. 18 19// You should have received a copy of the GNU General Public License along 20// with this library; see the file COPYING3. If not see 21// <http://www.gnu.org/licenses/>. 22 23// 21.4 Numeric Conversions [string.conversions] 24 25#include <string> 26#include <limits> 27#include <stdexcept> 28#include <testsuite_hooks.h> 29 30void 31test01() 32{ 33 bool test __attribute__((unused)) = false; 34 using namespace std; 35 36 try 37 { 38 string one; 39 stof(one); 40 } 41 catch(std::invalid_argument) 42 { 43 test = true; 44 } 45 catch(...) 46 { 47 } 48 VERIFY( test ); 49 50 test = false; 51 try 52 { 53 string one("a"); 54 stof(one); 55 } 56 catch(std::invalid_argument) 57 { 58 test = true; 59 } 60 catch(...) 61 { 62 } 63 VERIFY( test ); 64 65 float f1 = 0.0f; 66 size_t idx1 = 0; 67 try 68 { 69 string one("2.0a"); 70 f1 = stof(one, &idx1); 71 } 72 catch(...) 73 { 74 test = false; 75 } 76 VERIFY( test ); 77 VERIFY( f1 == 2.0f ); 78 VERIFY( idx1 == 3 ); 79 80 test = false; 81 try 82 { 83 string one("1e"); 84 one.append(2 * numeric_limits<float>::max_exponent10, '9'); 85 f1 = stof(one); 86 } 87 catch(std::out_of_range) 88 { 89 test = true; 90 } 91 catch(...) 92 { 93 } 94 VERIFY( test ); 95 VERIFY( f1 == 2.0f ); 96 97 try 98 { 99 long double ld0 = numeric_limits<float>::max() / 100.0; 100 string one(to_string(ld0)); 101 stof(one); 102 } 103 catch(...) 104 { 105 test = false; 106 } 107 VERIFY( test ); 108 109 if ((numeric_limits<long double>::max() / 10000.0L) 110 > numeric_limits<float>::max()) 111 { 112 test = false; 113 f1 = -1.0f; 114 try 115 { 116 long double ld1 = numeric_limits<float>::max(); 117 ld1 *= 100.0; 118 string one(to_string(ld1)); 119 f1 = stof(one); 120 } 121 catch(std::out_of_range) 122 { 123 test = true; 124 } 125 catch(...) 126 { 127 } 128 VERIFY( test ); 129 VERIFY( f1 == -1.0f ); 130 } 131} 132 133int main() 134{ 135 test01(); 136 return 0; 137} 138