libcxx/test/std/utilities/function.objects/bitwise.operations/bit_not.pass.cpp

   1 //===----------------------------------------------------------------------===//
   2 //
   3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
   4 // See https://llvm.org/LICENSE.txt for license information.
   5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
   6 //
   7 //===----------------------------------------------------------------------===//
   8
   9 // UNSUPPORTED: c++03, c++11
  10 // ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS
  11
  12 // <functional>
  13
  14 // bit_not
  15
  16 #include <functional>
  17 #include <type_traits>
  18 #include <cassert>
  19
  20 #include "test_macros.h"
  21
  22 int main(int, char**)
  23 {
  24     typedef std::bit_not<int> F;
  25     const F f = F();
  26 #if TEST_STD_VER <= 17
  27     static_assert((std::is_same<F::argument_type, int>::value), "" );
  28     static_assert((std::is_same<F::result_type, int>::value), "" );
  29 #endif
  30     assert((f(0xEA95) & 0xFFFF ) == 0x156A);
  31     assert((f(0x58D3) & 0xFFFF ) == 0xA72C);
  32     assert((f(0)      & 0xFFFF ) == 0xFFFF);
  33     assert((f(0xFFFF) & 0xFFFF ) == 0);
  34
  35     typedef std::bit_not<> F2;
  36     const F2 f2 = F2();
  37     assert((f2(0xEA95)  & 0xFFFF ) == 0x156A);
  38     assert((f2(0xEA95L) & 0xFFFF ) == 0x156A);
  39     assert((f2(0x58D3)  & 0xFFFF ) == 0xA72C);
  40     assert((f2(0x58D3L) & 0xFFFF ) == 0xA72C);
  41     assert((f2(0)       & 0xFFFF ) == 0xFFFF);
  42     assert((f2(0L)      & 0xFFFF ) == 0xFFFF);
  43     assert((f2(0xFFFF)  & 0xFFFF ) == 0);
  44     assert((f2(0xFFFFL)  & 0xFFFF ) == 0);
  45
  46     constexpr int foo = std::bit_not<int> () (0xEA95) & 0xFFFF;
  47     static_assert ( foo == 0x156A, "" );
  48
  49     constexpr int bar = std::bit_not<> () (0xEA95) & 0xFFFF;
  50     static_assert ( bar == 0x156A, "" );
  51
  52   return 0;
  53 }