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1 // Copyright (C) 2020 Free Software Foundation, Inc.
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2 //
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3 // This file is part of the GNU ISO C++ Library. This library is free
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4 // software; you can redistribute it and/or modify it under the
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5 // terms of the GNU General Public License as published by the
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6 // Free Software Foundation; either version 3, or (at your option)
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7 // any later version.
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8
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9 // This library is distributed in the hope that it will be useful,
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10 // but WITHOUT ANY WARRANTY; without even the implied warranty of
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11 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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12 // GNU General Public License for more details.
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13
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14 // You should have received a copy of the GNU General Public License along
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15 // with this library; see the file COPYING3. If not see
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16 // <http://www.gnu.org/licenses/>.
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17
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18 // { dg-options "-std=gnu++2a" }
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19 // { dg-do run { target c++2a } }
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20
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21 #include <utility>
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22 #include <limits>
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23 #include <testsuite_hooks.h>
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24
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25 void
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26 test01()
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27 {
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28 unsigned int u = std::numeric_limits<unsigned int>::max();
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29 int s = -1;
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30 VERIFY( std::cmp_less(s, u) );
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31 VERIFY( !std::cmp_less(u, s) );
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32 u = (unsigned) std::numeric_limits<int>::max() + 1U;
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33 VERIFY( std::cmp_less(s, u) );
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34 VERIFY( !std::cmp_less(u, s) );
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35 }
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36
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37 constexpr bool
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38 test02()
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39 {
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40 unsigned int u = std::numeric_limits<unsigned int>::max();
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41 int s = -1;
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42 if (!std::cmp_less(s, u))
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43 throw 1;
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44 if (std::cmp_less(u, s))
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45 throw 2;
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46 return true;
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47 }
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48
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49 void
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50 test03()
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51 {
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52 short ss = -1;
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53 int s = -1;
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54 VERIFY( !std::cmp_less(s, ss) );
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55 VERIFY( !std::cmp_less(ss, s) );
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56
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57 unsigned int u = (unsigned int) -1;
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58 VERIFY( std::cmp_less(s, u) );
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59 VERIFY( !std::cmp_less(u, s) );
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60 VERIFY( std::cmp_less(ss, u) );
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61 VERIFY( !std::cmp_less(u, ss) );
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62
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63 unsigned long long ul = (unsigned long long) -1;
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64 VERIFY( std::cmp_less(s, ul) );
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65 VERIFY( !std::cmp_less(ul, s) );
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66 VERIFY( std::cmp_less(ss, ul) );
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67 VERIFY( !std::cmp_less(ul, ss) );
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68 VERIFY( std::cmp_less(u, ul) );
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69 VERIFY( !std::cmp_less(ul, u) );
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70 }
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71
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72 int
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73 main()
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74 {
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75 test01();
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76 static_assert( test02() );
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77 test03();
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78 }
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