libstdc++-v3/testsuite/23_containers/bitset/cons/1.cc

   1 // 1999-06-08 bkoz
   2
   3 // Copyright (C) 1999-2020 Free Software Foundation, Inc.
   4 //
   5 // This file is part of the GNU ISO C++ Library.  This library is free
   6 // software; you can redistribute it and/or modify it under the
   7 // terms of the GNU General Public License as published by the
   8 // Free Software Foundation; either version 3, or (at your option)
   9 // any later version.
  10
  11 // This library is distributed in the hope that it will be useful,
  12 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 // GNU General Public License for more details.
  15
  16 // You should have received a copy of the GNU General Public License along
  17 // with this library; see the file COPYING3.  If not see
  18 // <http://www.gnu.org/licenses/>.
  19
  20 // 23.3.5.1 bitset constructors
  21
  22 #include <string>
  23 #include <bitset>
  24 #include <algorithm> // std::reverse
  25 #include <stdexcept>
  26 #include <testsuite_hooks.h>
  27
  28 void test01(void)
  29 {
  30   // bitset()
  31   const size_t n1 = 5;
  32   std::bitset<n1> bit01;
  33   for (size_t i = 0; i < n1; ++i)
  34     VERIFY( !bit01.test(i) );
  35
  36   // bitset(unsigned long)
  37   const size_t n2 = 32;
  38   unsigned long ul1 = 2;
  39   std::bitset<n2> bit02(ul1);
  40   VERIFY( !bit02.test(0) );
  41   VERIFY( bit02.test(1) );
  42   VERIFY( !bit02.test(2) );
  43
  44   // template<_CharT, _Traits, _Alloc>
  45   // explicit bitset(const basic_string<_C,_T,_A>&, size_type pos, size_type n)
  46   std::string str01("stuff smith sessions");
  47   const size_t n3 = 128;
  48   try {
  49     std::bitset<n3> bit03(str01, 5);
  50   }
  51   catch(std::invalid_argument& fail) {
  52     VERIFY( true );
  53   }
  54   catch(...) {
  55     VERIFY( false );
  56   }
  57
  58   std::string str02("010101000011");
  59   int sz = str02.size();
  60   try {
  61     std::bitset<n3> bit03(str02, 0);
  62     std::string str03;
  63     for (int i = 0; i < sz; ++i)
  64       str03 += (bit03.test(i) ? '1' : '0');
  65     std::reverse(str03.begin(), str03.end());
  66     VERIFY( str03 == str02 );
  67   }
  68   catch(std::invalid_argument& fail) {
  69     VERIFY( false );
  70   }
  71   catch(...) {
  72     VERIFY( false );
  73   }
  74 }
  75
  76 int main()
  77 {
  78   test01();
  79   return 0;
  80 }