Hristo Hristov f7cab64684
[libc++][numeric][NFC] Cleanup *Saturation arithmetic* tests (#101826)
This simplifies the tests a little bit:

Fixed -> TODO(LLVM20): remove [[maybe_unused]] and `{}` scope since all
supported compilers support "Placeholder variables with no name"

*IMPORTANT: Requires Apple Clang with [P2169R4: A nice placeholder with
no name](https://wg21.link/P2169R4)*

---------

Co-authored-by: Hristo Hristov <zingam@outlook.com>
2025-03-16 11:31:35 +08:00

59 lines
1.6 KiB
C++

//===----------------------------------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
// REQUIRES: std-at-least-c++26
// REQUIRES: has-unix-headers
// REQUIRES: libcpp-hardening-mode={{extensive|debug}}
// XFAIL: availability-verbose_abort-missing
// <numeric>
// template<class T>
// constexpr T div_sat(T x, T y) noexcept; // freestanding
#include <cassert>
#include <numeric>
#include "check_assertion.h"
#include "test_macros.h"
template <typename IntegerT>
void test_runtime_assertion() {
TEST_LIBCPP_ASSERT_FAILURE((void)std::div_sat(IntegerT{27}, IntegerT{0}), "Division by 0 is undefined");
}
bool test() {
// Signed
test_runtime_assertion<signed char>();
test_runtime_assertion<short int>();
test_runtime_assertion<int>();
test_runtime_assertion<long int>();
test_runtime_assertion<long long int>();
#ifndef TEST_HAS_NO_INT128
test_runtime_assertion<__int128_t>();
#endif
// Unsigned
test_runtime_assertion<unsigned char>();
test_runtime_assertion<unsigned short int>();
test_runtime_assertion<unsigned int>();
test_runtime_assertion<unsigned long int>();
test_runtime_assertion<unsigned long long int>();
#ifndef TEST_HAS_NO_INT128
test_runtime_assertion<__uint128_t>();
#endif
return true;
}
int main(int, char**) {
test();
return 0;
}