libstdc++-v3/testsuite/20_util/integer_comparisons/not_equal.cc

   1 // Copyright (C) 2020-2023 Free Software Foundation, Inc.
   2 //
   3 // This file is part of the GNU ISO C++ Library.  This library is free
   4 // software; you can redistribute it and/or modify it under the
   5 // terms of the GNU General Public License as published by the
   6 // Free Software Foundation; either version 3, or (at your option)
   7 // any later version.
   8
   9 // This library is distributed in the hope that it will be useful,
  10 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  11 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12 // GNU General Public License for more details.
  13
  14 // You should have received a copy of the GNU General Public License along
  15 // with this library; see the file COPYING3.  If not see
  16 // <http://www.gnu.org/licenses/>.
  17
  18 // { dg-options "-std=gnu++2a" }
  19 // { dg-do run { target c++2a } }
  20
  21 #include <utility>
  22 #include <limits>
  23 #include <testsuite_hooks.h>
  24
  25 void
  26 test01()
  27 {
  28   unsigned int u = std::numeric_limits<unsigned int>::max();
  29   int s = -1;
  30   VERIFY( std::cmp_not_equal(s, u) );
  31   VERIFY( std::cmp_not_equal(u, s) );
  32 }
  33
  34 constexpr bool
  35 test02()
  36 {
  37   unsigned int u = std::numeric_limits<unsigned int>::max();
  38   int s = -1;
  39   if (!std::cmp_not_equal(s, u))
  40     throw 1;
  41   if (!std::cmp_not_equal(u, s))
  42     throw 2;
  43   return true;
  44 }
  45
  46 void
  47 test03()
  48 {
  49   short ss = -1;
  50   int s = -1;
  51   VERIFY( !std::cmp_not_equal(s, ss) );
  52   VERIFY( !std::cmp_not_equal(ss, s) );
  53
  54   unsigned int u = (unsigned int) -1;
  55   VERIFY( std::cmp_not_equal(s, u) );
  56   VERIFY( std::cmp_not_equal(u, s) );
  57   VERIFY( std::cmp_not_equal(ss, u) );
  58   VERIFY( std::cmp_not_equal(u, ss) );
  59
  60   unsigned long long ul = (unsigned long long) -1;
  61   VERIFY( std::cmp_not_equal(s, ul) );
  62   VERIFY( std::cmp_not_equal(ul, s) );
  63   VERIFY( std::cmp_not_equal(ss, ul) );
  64   VERIFY( std::cmp_not_equal(ul, ss) );
  65   VERIFY( std::cmp_not_equal(u, ul) );
  66   VERIFY( std::cmp_not_equal(ul, u) );
  67 }
  68
  69 int
  70 main()
  71 {
  72   test01();
  73   static_assert( test02() );
  74   test03();
  75 }