libcxx/test/std/numerics/numeric.ops/numeric.ops.sat/div_sat.assert.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, c++14, c++17, c++20, c++23
  10
  11 // REQUIRES: has-unix-headers
  12 // REQUIRES: libcpp-hardening-mode={{extensive|debug}}
  13 // XFAIL: availability-verbose_abort-missing
  14
  15 // <numeric>
  16
  17 // template<class T>
  18 // constexpr T div_sat(T x, T y) noexcept;                     // freestanding
  19
  20 #include <cassert>
  21 #include <numeric>
  22
  23 #include "check_assertion.h"
  24 #include "test_macros.h"
  25
  26 template <typename IntegerT>
  27 void test_runtime_assertion() {
  28   TEST_LIBCPP_ASSERT_FAILURE((void)std::div_sat(IntegerT{27}, IntegerT{0}), "Division by 0 is undefined");
  29 }
  30
  31 bool test() {
  32   // Signed
  33   test_runtime_assertion<signed char>();
  34   test_runtime_assertion<short int>();
  35   test_runtime_assertion<int>();
  36   test_runtime_assertion<long int>();
  37   test_runtime_assertion<long long int>();
  38 #ifndef TEST_HAS_NO_INT128
  39   test_runtime_assertion<__int128_t>();
  40 #endif
  41   // Unsigned
  42   test_runtime_assertion<unsigned char>();
  43   test_runtime_assertion<unsigned short int>();
  44   test_runtime_assertion<unsigned int>();
  45   test_runtime_assertion<unsigned long int>();
  46   test_runtime_assertion<unsigned long long int>();
  47 #ifndef TEST_HAS_NO_INT128
  48   test_runtime_assertion<__uint128_t>();
  49 #endif
  50
  51   return true;
  52 }
  53
  54 int main(int, char**) {
  55   test();
  56
  57   return 0;
  58 }