libstdc++-v3/testsuite/25_algorithms/min_max.cc

   1 // 2000-03-29 sss/bkoz
   2
   3 // Copyright (C) 2000, 2003, 2004, 2005 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 2, 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 COPYING.  If not, write to the Free
  18 // Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
  19 // USA.
  20
  21 #include <algorithm>
  22 #include <functional>
  23 #include <testsuite_hooks.h>
  24
  25 void test01()
  26 {
  27   bool test __attribute__((unused)) = true;
  28
  29   const int& x = std::max(1, 2);
  30   const int& y = std::max(4, 3);
  31   VERIFY( x == 2 );
  32   VERIFY( y == 4 );
  33
  34   const int& xc = std::max(1, 2, std::greater<int>());
  35   const int& yc = std::max(4, 3, std::greater<int>());
  36   VERIFY( xc == 1 );
  37   VERIFY( yc == 3 );
  38
  39   const int& z = std::min(1, 2);
  40   const int& w = std::min(4, 3);
  41   VERIFY( z == 1 );
  42   VERIFY( w == 3 );
  43
  44   const int& zc = std::min(1, 2, std::greater<int>());
  45   const int& wc = std::min(4, 3, std::greater<int>());
  46   VERIFY( zc == 2 );
  47   VERIFY( wc == 4 );
  48 }
  49
  50 template<typename T>
  51   struct A { static const T a; };
  52
  53 template<typename T>
  54 const T A<T>::a = T(3);
  55
  56 void test02()
  57 {
  58   bool test __attribute__((unused)) = true;
  59
  60   VERIFY( 2 == std::min(A<int>::a, 2) );
  61   VERIFY( 3 == std::min(A<int>::a, 4) );
  62
  63   VERIFY( 2u == std::min(A<unsigned int>::a, 2u) );
  64   VERIFY( 3u == std::min(A<unsigned int>::a, 4u) );
  65
  66   VERIFY( 2l == std::min(A<long>::a, 2l) );
  67   VERIFY( 3l == std::min(A<long>::a, 4l) );
  68
  69   VERIFY( 2ul == std::min(A<unsigned long>::a, 2ul) );
  70   VERIFY( 3ul == std::min(A<unsigned long>::a, 4ul) );
  71
  72 #ifdef _GLIBCXX_USE_LONG_LONG
  73   VERIFY( 2ll == std::min(A<long long>::a, 2ll) );
  74   VERIFY( 3ll == std::min(A<long long>::a, 4ll) );
  75
  76   VERIFY( 2ull == std::min(A<unsigned long long>::a, 2ull) );
  77   VERIFY( 3ull == std::min(A<unsigned long long>::a, 4ull) );
  78 #endif
  79
  80   VERIFY( short(2) == std::min(A<short>::a, short(2)) );
  81   VERIFY( short(3) == std::min(A<short>::a, short(4)) );
  82
  83   VERIFY( (unsigned short)2 == std::min(A<unsigned short>::a, (unsigned short)2) );
  84   VERIFY( (unsigned short)3 == std::min(A<unsigned short>::a, (unsigned short)4) );
  85
  86   VERIFY( (char)2 == std::min(A<char>::a, (char)2) );
  87   VERIFY( (char)3 == std::min(A<char>::a, (char)4) );
  88
  89   VERIFY( (signed char)2 == std::min(A<signed char>::a, (signed char)2) );
  90   VERIFY( (signed char)3 == std::min(A<signed char>::a, (signed char)4) );
  91
  92   VERIFY( (unsigned char)2 == std::min(A<unsigned char>::a, (unsigned char)2) );
  93   VERIFY( (unsigned char)3 == std::min(A<unsigned char>::a, (unsigned char)4) );
  94
  95   VERIFY( (wchar_t)2 == std::min(A<wchar_t>::a, (wchar_t)2) );
  96   VERIFY( (wchar_t)3 == std::min(A<wchar_t>::a, (wchar_t)4) );
  97
  98   VERIFY( 2.0 == std::min(A<double>::a, 2.0) );
  99   VERIFY( 3.0 == std::min(A<double>::a, 4.0) );
 100
 101   VERIFY( float(2) == std::min(A<float>::a, float(2)) );
 102   VERIFY( float(3) == std::min(A<float>::a, float(4)) );
 103
 104   VERIFY( (long double)2 == std::min(A<long double>::a, (long double)2) );
 105   VERIFY( (long double)3 == std::min(A<long double>::a, (long double)4) );
 106
 107
 108   VERIFY( 3 == std::max(A<int>::a, 2) );
 109   VERIFY( 4 == std::max(A<int>::a, 4) );
 110
 111   VERIFY( 3u == std::max(A<unsigned int>::a, 2u) );
 112   VERIFY( 4u == std::max(A<unsigned int>::a, 4u) );
 113
 114   VERIFY( 3l == std::max(A<long>::a, 2l) );
 115   VERIFY( 4l == std::max(A<long>::a, 4l) );
 116
 117   VERIFY( 3ul == std::max(A<unsigned long>::a, 2ul) );
 118   VERIFY( 4ul == std::max(A<unsigned long>::a, 4ul) );
 119
 120 #ifdef _GLIBCXX_USE_LONG_LONG
 121   VERIFY( 3ll == std::max(A<long long>::a, 2ll) );
 122   VERIFY( 4ll == std::max(A<long long>::a, 4ll) );
 123
 124   VERIFY( 3ull == std::max(A<unsigned long long>::a, 2ull) );
 125   VERIFY( 4ull == std::max(A<unsigned long long>::a, 4ull) );
 126 #endif
 127
 128   VERIFY( short(3) == std::max(A<short>::a, short(2)) );
 129   VERIFY( short(4) == std::max(A<short>::a, short(4)) );
 130
 131   VERIFY( (unsigned short)3 == std::max(A<unsigned short>::a, (unsigned short)2) );
 132   VERIFY( (unsigned short)4 == std::max(A<unsigned short>::a, (unsigned short)4) );
 133
 134   VERIFY( (char)3 == std::max(A<char>::a, (char)2) );
 135   VERIFY( (char)4 == std::max(A<char>::a, (char)4) );
 136
 137   VERIFY( (signed char)3 == std::max(A<signed char>::a, (signed char)2) );
 138   VERIFY( (signed char)4 == std::max(A<signed char>::a, (signed char)4) );
 139
 140   VERIFY( (unsigned char)3 == std::max(A<unsigned char>::a, (unsigned char)2) );
 141   VERIFY( (unsigned char)4 == std::max(A<unsigned char>::a, (unsigned char)4) );
 142
 143   VERIFY( (wchar_t)3 == std::max(A<wchar_t>::a, (wchar_t)2) );
 144   VERIFY( (wchar_t)4 == std::max(A<wchar_t>::a, (wchar_t)4) );
 145 }
 146
 147 int main()
 148 {
 149   test01();
 150   test02();
 151   return 0;
 152 }