| //===-- Definition of macros for stdckdint.h ------------------------------===// |
| // |
| // 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 |
| // |
| //===----------------------------------------------------------------------===// |
| |
| #ifndef __LLVM_LIBC_MACROS_STDCKDINT_MACROS_H |
| #define __LLVM_LIBC_MACROS_STDCKDINT_MACROS_H |
| |
| // We need to use __builtin_*_overflow from GCC/Clang to implement the overflow |
| // macros. Check __GNUC__ for availability of such builtins. |
| #ifdef __GNUC__ |
| // clang/gcc overlay may provides similar macros, we need to avoid redefining |
| // them. |
| #ifndef __STDC_VERSION_STDCKDINT_H__ |
| #define __STDC_VERSION_STDCKDINT_H__ 202311L |
| |
| #define ckd_add(R, A, B) __builtin_add_overflow((A), (B), (R)) |
| #define ckd_sub(R, A, B) __builtin_sub_overflow((A), (B), (R)) |
| #define ckd_mul(R, A, B) __builtin_mul_overflow((A), (B), (R)) |
| #endif // __STDC_VERSION_STDCKDINT_H__ |
| #endif // __GNUC__ |
| #endif // __LLVM_LIBC_MACROS_STDCKDINT_MACROS_H |
