libstdc++-v3/testsuite/20_util/function_objects/constexpr.cc

   1 // { dg-do compile { target c++14 } }
   2
   3 // Copyright (C) 2014-2025 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 3, 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 COPYING3.  If not see
  18 // <http://www.gnu.org/licenses/>.
  19
  20 // 20.9.5-20.9.9
  21
  22 #include <functional>
  23
  24 static_assert(std::plus<int>()(1,2)==3, "");
  25 static_assert(std::minus<int>()(3,2)==1, "");
  26 static_assert(std::multiplies<int>()(3,2)==6, "");
  27 static_assert(std::divides<int>()(6,2)==3, "");
  28 static_assert(std::modulus<int>()(7,2)==1, "");
  29 static_assert(std::negate<int>()(-5)==5, "");
  30
  31 static_assert(std::plus<void>()(1,2)==3, "");
  32 static_assert(std::minus<void>()(3,2)==1, "");
  33 static_assert(std::multiplies<void>()(3,2)==6, "");
  34 static_assert(std::divides<void>()(6,2)==3, "");
  35 static_assert(std::modulus<void>()(7,2)==1, "");
  36 static_assert(std::negate<void>()(-5)==5, "");
  37
  38 static_assert(std::equal_to<int>()(2,2), "");
  39 static_assert(std::not_equal_to<int>()(1,2), "");
  40 static_assert(std::greater<int>()(2,1), "");
  41 static_assert(std::less<int>()(1,2), "");
  42 static_assert(std::greater_equal<int>()(2,2), "");
  43 static_assert(std::less_equal<int>()(2,2), "");
  44
  45 static_assert(std::equal_to<void>()(2,2), "");
  46 static_assert(std::not_equal_to<void>()(1,2), "");
  47 static_assert(std::greater<void>()(2,1), "");
  48 static_assert(std::less<void>()(1,2), "");
  49 static_assert(std::greater_equal<void>()(2,2), "");
  50 static_assert(std::less_equal<void>()(2,2), "");
  51
  52 static_assert(std::logical_and<int>()(1,1), "");
  53 static_assert(std::logical_or<int>()(0,1), "");
  54 static_assert(std::logical_not<int>()(0), "");
  55
  56 static_assert(std::logical_and<void>()(1,1), "");
  57 static_assert(std::logical_or<void>()(0,1), "");
  58 static_assert(std::logical_not<void>()(0), "");
  59
  60 static_assert(std::bit_and<int>()(3,2)==2, "");
  61 static_assert(std::bit_or<int>()(1,2)==3, "");
  62 static_assert(std::bit_xor<int>()(1,1)==0, "");
  63 static_assert(std::bit_not<int>()(std::bit_not<int>()(0))==0, "");
  64
  65 static_assert(std::bit_and<void>()(3,2)==2, "");
  66 static_assert(std::bit_or<void>()(1,2)==3, "");
  67 static_assert(std::bit_xor<void>()(1,1)==0, "");
  68 static_assert(std::bit_not<void>()(std::bit_not<void>()(0))==0, "");
  69
  70 static_assert(std::unary_negate< // { dg-warning "is deprecated" "" { target c++17 } }
  71               std::logical_not<int>
  72               >(std::logical_not<int>())(1), "");
  73 static_assert(std::not1(std::logical_not<int>())(1), ""); // { dg-warning "is deprecated" "" { target c++17 } }
  74
  75 static_assert(std::binary_negate< // { dg-warning "is deprecated" "" { target c++17 } }
  76               std::logical_and<int>
  77               >(std::logical_and<int>())(0,0), "");
  78 static_assert(std::not2(std::logical_and<int>())(0,0), ""); // { dg-warning "is deprecated" "" { target c++17 } }