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

   1 // { dg-options "-std=gnu++0x" }
   2 // { dg-require-cstdint "" }
   3
   4 // Copyright (C) 2008-2013 Free Software Foundation, Inc.
   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 3, 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 COPYING3.  If not see
  19 // <http://www.gnu.org/licenses/>.
  20
  21 // 20.8.3 Class template duration [time.duration]
  22
  23 #include <chrono>
  24 #include <type_traits>
  25 #include <testsuite_hooks.h>
  26
  27 template<typename T>
  28 struct type_emulator
  29 {
  30   type_emulator()
  31   : i(T(0)) { }
  32
  33   type_emulator(T j)
  34   : i(j) { }
  35
  36   type_emulator(const type_emulator& e)
  37   : i(e.i) { }
  38
  39   type_emulator&
  40   operator*=(type_emulator a)
  41   {
  42     i *= a.i;
  43     return *this;
  44   }
  45
  46   type_emulator&
  47   operator+=(type_emulator a)
  48   {
  49     i += a.i;
  50     return *this;
  51   }
  52
  53   operator T ()
  54   { return i; }
  55
  56   T i;
  57 };
  58
  59 template<typename T>
  60 bool
  61 operator==(type_emulator<T> a, type_emulator<T> b)
  62 { return a.i == b.i; }
  63
  64 template<typename T>
  65 bool
  66 operator<(type_emulator<T> a, type_emulator<T> b)
  67 { return a.i < b.i; }
  68
  69 template<typename T>
  70 type_emulator<T>
  71 operator+(type_emulator<T> a, type_emulator<T> b)
  72 { return a += b; }
  73
  74 template<typename T>
  75 type_emulator<T>
  76 operator*(type_emulator<T> a, type_emulator<T> b)
  77 { return a *= b; }
  78
  79 namespace std
  80 {
  81   template<typename T, typename U>
  82   struct common_type<type_emulator<T>, U>
  83   { typedef typename common_type<T,U>::type type; };
  84
  85   template<typename T, typename U>
  86   struct common_type<U, type_emulator<T>>
  87   { typedef typename common_type<U,T>::type type; };
  88
  89   template<typename T, typename U>
  90   struct common_type<type_emulator<T>, type_emulator<U>>
  91   { typedef typename common_type<T,U>::type type; };
  92
  93   namespace chrono
  94   {
  95     template<typename T>
  96     struct treat_as_floating_point<type_emulator<T>>
  97     : is_floating_point<T>
  98     { };
  99   }
 100 }
 101
 102 typedef type_emulator<int> int_emulator;
 103 typedef type_emulator<double> dbl_emulator;
 104
 105 // 20.8.3.1 duration constructors [time.duration.cons]
 106 void
 107 test01()
 108 {
 109   bool test __attribute__((unused)) = true;
 110   using std::chrono::duration;
 111
 112   int r = 3;
 113   duration<int> d1(r);
 114   VERIFY(d1.count() == static_cast<duration<int>::rep>(r));
 115
 116   double s = 8.0;
 117   duration<double> d2(s);
 118   VERIFY(d2.count() == static_cast<duration<double>::rep>(s));
 119
 120   int_emulator ie(3);
 121   duration<int_emulator> d3(ie);
 122   VERIFY(d3.count() == static_cast<duration<int_emulator>::rep>(ie));
 123
 124   dbl_emulator de(4.0);
 125   duration<dbl_emulator> d4(de);
 126   VERIFY(d4.count() == static_cast<duration<dbl_emulator>::rep>(de));
 127 }
 128
 129 int
 130 main()
 131 {
 132   test01();
 133   return 0;
 134 }