libstdc++-v3/testsuite/20_util/duration/cons/1.cc

   1 // { dg-options "-std=gnu++0x" }
   2 // { dg-require-cstdint "" }
   3
   4 // Copyright (C) 2008 Free Software Foundation
   5 //
   6 // This file is part of the GNU ISO C++ Library.  This library is free
   7 // software; you can redistribute it and/or modify it under the
   8 // terms of the GNU General Public License as published by the
   9 // Free Software Foundation; either version 2, or (at your option)
  10 // any later version.
  11
  12 // This library is distributed in the hope that it will be useful,
  13 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  14 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15 // GNU General Public License for more details.
  16
  17 // You should have received a copy of the GNU General Public License along
  18 // with this library; see the file COPYING.  If not, write to the Free
  19 // Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
  20 // USA.
  21
  22 // 20.8.3 Class template duration [time.duration]
  23
  24 #include <chrono>
  25 #include <type_traits>
  26 #include <testsuite_hooks.h>
  27
  28 template<typename T>
  29 struct type_emulator
  30 {
  31   type_emulator()
  32   : i(T(0)) { }
  33
  34   type_emulator(T j)
  35   : i(j) { }
  36
  37   type_emulator(const type_emulator& e)
  38   : i(e.i) { }
  39
  40   type_emulator&
  41   operator*=(type_emulator a)
  42   {
  43     i *= a.i;
  44     return *this;
  45   }
  46
  47   type_emulator&
  48   operator+=(type_emulator a)
  49   {
  50     i += a.i;
  51     return *this;
  52   }
  53
  54   operator T ()
  55   { return i; }
  56
  57   T i;
  58 };
  59
  60 template<typename T>
  61 bool
  62 operator==(type_emulator<T> a, type_emulator<T> b)
  63 { return a.i == b.i; }
  64
  65 template<typename T>
  66 bool
  67 operator<(type_emulator<T> a, type_emulator<T> b)
  68 { return a.i < b.i; }
  69
  70 template<typename T>
  71 type_emulator<T>
  72 operator+(type_emulator<T> a, type_emulator<T> b)
  73 { return a += b; }
  74
  75 template<typename T>
  76 type_emulator<T>
  77 operator*(type_emulator<T> a, type_emulator<T> b)
  78 { return a *= b; }
  79
  80 namespace std
  81 {
  82   template<typename T, typename U>
  83   struct common_type<type_emulator<T>, U>
  84   { typedef typename common_type<T,U>::type type; };
  85
  86   template<typename T, typename U>
  87   struct common_type<U, type_emulator<T>>
  88   { typedef typename common_type<U,T>::type type; };
  89
  90   template<typename T, typename U>
  91   struct common_type<type_emulator<T>, type_emulator<U>>
  92   { typedef typename common_type<T,U>::type type; };
  93
  94   namespace chrono
  95   {
  96     template<typename T>
  97     struct treat_as_floating_point<type_emulator<T>>
  98     : is_floating_point<T>
  99     { };
 100   }
 101 }
 102
 103 typedef type_emulator<int> int_emulator;
 104 typedef type_emulator<double> dbl_emulator;
 105
 106 // 20.8.3.1 duration constructors [time.duration.cons]
 107 void
 108 test01()
 109 {
 110   bool test __attribute__((unused)) = true;
 111   using std::chrono::duration;
 112
 113   duration<int> d0;
 114   VERIFY(d0.count() == static_cast<duration<int>::rep>(0));
 115
 116   int r = 3;
 117   duration<int> d1(r);
 118   VERIFY(d1.count() == static_cast<duration<int>::rep>(r));
 119
 120   double s = 8.0;
 121   duration<double> d2(s);
 122   VERIFY(d2.count() == static_cast<duration<double>::rep>(s));
 123
 124   int_emulator ie(3);
 125   duration<int_emulator> d3(ie);
 126   VERIFY(d3.count() == static_cast<duration<int_emulator>::rep>(ie));
 127
 128   dbl_emulator de(4.0);
 129   duration<dbl_emulator> d4(de);
 130   VERIFY(d4.count() == static_cast<duration<dbl_emulator>::rep>(de));
 131 }
 132
 133 int
 134 main()
 135 {
 136   test01();
 137   return 0;
 138 }