Warning: This file is not a C or C++ file. It does not have highlighting.
| 1 | //===-- Definition of macros for stdckdint.h ------------------------------===// |
|---|---|
| 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 | #ifndef LLVM_LIBC_MACROS_STDCKDINT_MACROS_H |
| 10 | #define LLVM_LIBC_MACROS_STDCKDINT_MACROS_H |
| 11 | |
| 12 | // We need to use __builtin_*_overflow from GCC/Clang to implement the overflow |
| 13 | // macros. Check __GNUC__ or __clang__ for availability of such builtins. |
| 14 | // Note that clang-cl defines __clang__ only and does not define __GNUC__ so we |
| 15 | // have to check for both. |
| 16 | #if defined(__GNUC__) || defined(__clang__) |
| 17 | // clang/gcc overlay may provides similar macros, we need to avoid redefining |
| 18 | // them. |
| 19 | #ifndef __STDC_VERSION_STDCKDINT_H__ |
| 20 | #define __STDC_VERSION_STDCKDINT_H__ 202311L |
| 21 | |
| 22 | #define ckd_add(R, A, B) __builtin_add_overflow((A), (B), (R)) |
| 23 | #define ckd_sub(R, A, B) __builtin_sub_overflow((A), (B), (R)) |
| 24 | #define ckd_mul(R, A, B) __builtin_mul_overflow((A), (B), (R)) |
| 25 | #endif // __STDC_VERSION_STDCKDINT_H__ |
| 26 | #endif // __GNUC__ |
| 27 | #endif // LLVM_LIBC_MACROS_STDCKDINT_MACROS_H |
| 28 |
Warning: This file is not a C or C++ file. It does not have highlighting.