================ @@ -0,0 +1,397 @@ +//===----------------------------------------------------------------------===// +// +// 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 +// +//===----------------------------------------------------------------------===// + +// UNSUPPORTED: c++03, c++11, c++14, c++17, c++20, c++23 + +// <numeric> + +// template<class R, class T> +// constexpr R saturate_cast(T x) noexcept; // freestanding + +#include <cassert> +#include <climits> +#include <concepts> +#include <limits> +#include <numeric> + +#include "test_macros.h" +#include <print> + +// Smaller to larger +static_assert(noexcept(std::saturate_cast<signed int>(std::numeric_limits<signed char>::max()))); +static_assert(noexcept(std::saturate_cast<signed int>(std::numeric_limits<unsigned char>::max()))); + +static_assert(noexcept(std::saturate_cast<unsigned int>(std::numeric_limits<signed char>::max()))); +static_assert(noexcept(std::saturate_cast<unsigned int>(std::numeric_limits<unsigned char>::max()))); + +// Same type +static_assert(noexcept(std::saturate_cast<signed long int>(std::numeric_limits<signed long int>::max()))); +static_assert(noexcept(std::saturate_cast<unsigned long int>(std::numeric_limits<unsigned long int>::max()))); + +// Larger to smaller +static_assert(noexcept(std::saturate_cast<signed char>(std::numeric_limits<signed int>::max()))); +static_assert(noexcept(std::saturate_cast<signed char>(std::numeric_limits<unsigned int>::max()))); + +static_assert(noexcept(std::saturate_cast<unsigned char>(std::numeric_limits<signed int>::max()))); +static_assert(noexcept(std::saturate_cast<unsigned char>(std::numeric_limits<unsigned int>::max()))); + +// Tests + +constexpr bool test() { + // clang-format off + +#ifndef TEST_HAS_NO_INT128 + using SIntT = __int128_t; + using UIntT = __uint128_t; +#else + using SIntT = long long int; + using UIntT = unsigned long long int; +#endif + + // Constants the values of which depend on the context (platform) + + constexpr auto sBigMin = std::numeric_limits<SIntT>::min(); + constexpr auto sZero = SIntT{0}; + constexpr auto sBigMax = std::numeric_limits<SIntT>::max(); + + constexpr auto uZero = UIntT{0}; + constexpr auto uBigMax = std::numeric_limits<UIntT>::max(); + + // Constants to avoid casting in place + + constexpr auto O_C = static_cast<signed char>(0); + constexpr auto O_UC = static_cast<unsigned char>(0); + + constexpr auto O_S = static_cast<signed short int>(0); + constexpr auto O_US = static_cast<unsigned short int>(0); + + // signed char + + // TODO(LLVM-20) remove [[maybe_unused]] and `{}` scope since all supported compilers support "Placeholder variables with no name", + // here and bellow... ---------------- mordante wrote:
```suggestion // here and below... ``` https://github.com/llvm/llvm-project/pull/77967 _______________________________________________ lldb-commits mailing list lldb-commits@lists.llvm.org https://lists.llvm.org/cgi-bin/mailman/listinfo/lldb-commits
