libstdc++-v3/testsuite/21_strings/basic_string/numeric_conversions/char/stold.cc

   1 // { dg-do run { target c++11 } }
   2 // { dg-require-string-conversions "" }
   3 // { dg-xfail-run-if "broken long double IO" { newlib_broken_long_double_io  }  "*" "" }
   4
   5 // 2008-06-15  Paolo Carlini  <paolo.carlini@oracle.com>
   6
   7 // Copyright (C) 2008-2016 Free Software Foundation, Inc.
   8 //
   9 // This file is part of the GNU ISO C++ Library.  This library is free
  10 // software; you can redistribute it and/or modify it under the
  11 // terms of the GNU General Public License as published by the
  12 // Free Software Foundation; either version 3, or (at your option)
  13 // any later version.
  14
  15 // This library is distributed in the hope that it will be useful,
  16 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  17 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18 // GNU General Public License for more details.
  19
  20 // You should have received a copy of the GNU General Public License along
  21 // with this library; see the file COPYING3.  If not see
  22 // <http://www.gnu.org/licenses/>.
  23
  24 // 21.4 Numeric Conversions [string.conversions]
  25
  26 #include <string>
  27 #include <limits>
  28 #include <stdexcept>
  29 #include <testsuite_hooks.h>
  30
  31 void
  32 test01()
  33 {
  34   bool test = false;
  35   using namespace std;
  36
  37   try
  38     {
  39       string one;
  40       stold(one);
  41     }
  42   catch(std::invalid_argument)
  43     {
  44       test = true;
  45     }
  46   catch(...)
  47     {
  48     }
  49   VERIFY( test );
  50
  51   test = false;
  52   try
  53     {
  54       string one("a");
  55       stold(one);
  56     }
  57   catch(std::invalid_argument)
  58     {
  59       test = true;
  60     }
  61   catch(...)
  62     {
  63     }
  64   VERIFY( test );
  65
  66   long double ld1 = 0.0L;
  67   size_t idx1 = 0;
  68   try
  69     {
  70       string one("2.0a");
  71       ld1 = stold(one, &idx1);
  72     }
  73   catch(...)
  74     {
  75       test = false;
  76     }
  77   VERIFY( test );
  78   VERIFY( ld1 == 2.0L );
  79   VERIFY( idx1 == 3 );
  80
  81   test = false;
  82   try
  83     {
  84       string one("1e");
  85       one.append(2 * numeric_limits<long double>::max_exponent10, '9');
  86       ld1 = stold(one);
  87     }
  88   catch(std::out_of_range)
  89     {
  90       test = true;
  91     }
  92   catch(...)
  93     {
  94     }
  95   VERIFY( test );
  96   VERIFY( ld1 == 2.0L );
  97
  98   try
  99     {
 100       long double ld0 = numeric_limits<long double>::max() / 100.0L;
 101       string one(to_string(ld0));
 102       stold(one);
 103     }
 104   catch(...)
 105     {
 106       test = false;
 107     }
 108   VERIFY( test );
 109 }
 110
 111 int main()
 112 {
 113   test01();
 114   return 0;
 115 }