1*71db0c75SAndroid Build Coastguard Worker //===-- Definition of macros for stdckdint.h ------------------------------===// 2*71db0c75SAndroid Build Coastguard Worker // 3*71db0c75SAndroid Build Coastguard Worker // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4*71db0c75SAndroid Build Coastguard Worker // See https://llvm.org/LICENSE.txt for license information. 5*71db0c75SAndroid Build Coastguard Worker // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6*71db0c75SAndroid Build Coastguard Worker // 7*71db0c75SAndroid Build Coastguard Worker //===----------------------------------------------------------------------===// 8*71db0c75SAndroid Build Coastguard Worker 9*71db0c75SAndroid Build Coastguard Worker #ifndef LLVM_LIBC_MACROS_STDCKDINT_MACROS_H 10*71db0c75SAndroid Build Coastguard Worker #define LLVM_LIBC_MACROS_STDCKDINT_MACROS_H 11*71db0c75SAndroid Build Coastguard Worker 12*71db0c75SAndroid Build Coastguard Worker // We need to use __builtin_*_overflow from GCC/Clang to implement the overflow 13*71db0c75SAndroid Build Coastguard Worker // macros. Check __GNUC__ or __clang__ for availability of such builtins. 14*71db0c75SAndroid Build Coastguard Worker // Note that clang-cl defines __clang__ only and does not define __GNUC__ so we 15*71db0c75SAndroid Build Coastguard Worker // have to check for both. 16*71db0c75SAndroid Build Coastguard Worker #if defined(__GNUC__) || defined(__clang__) 17*71db0c75SAndroid Build Coastguard Worker // clang/gcc overlay may provides similar macros, we need to avoid redefining 18*71db0c75SAndroid Build Coastguard Worker // them. 19*71db0c75SAndroid Build Coastguard Worker #ifndef __STDC_VERSION_STDCKDINT_H__ 20*71db0c75SAndroid Build Coastguard Worker #define __STDC_VERSION_STDCKDINT_H__ 202311L 21*71db0c75SAndroid Build Coastguard Worker 22*71db0c75SAndroid Build Coastguard Worker #define ckd_add(R, A, B) __builtin_add_overflow((A), (B), (R)) 23*71db0c75SAndroid Build Coastguard Worker #define ckd_sub(R, A, B) __builtin_sub_overflow((A), (B), (R)) 24*71db0c75SAndroid Build Coastguard Worker #define ckd_mul(R, A, B) __builtin_mul_overflow((A), (B), (R)) 25*71db0c75SAndroid Build Coastguard Worker #endif // __STDC_VERSION_STDCKDINT_H__ 26*71db0c75SAndroid Build Coastguard Worker #endif // __GNUC__ 27*71db0c75SAndroid Build Coastguard Worker #endif // LLVM_LIBC_MACROS_STDCKDINT_MACROS_H 28