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| 1 | /*===---- __clang_hip_stdlib.h - Device-side HIP math support --------------=== |
|---|---|
| 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 __CLANG_HIP_STDLIB_H__ |
| 10 | |
| 11 | #if !defined(__HIP__) && !defined(__OPENMP_AMDGCN__) |
| 12 | #error "This file is for HIP and OpenMP AMDGCN device compilation only." |
| 13 | #endif |
| 14 | |
| 15 | #if !defined(__cplusplus) |
| 16 | |
| 17 | #include <limits.h> |
| 18 | |
| 19 | #ifdef __OPENMP_AMDGCN__ |
| 20 | #define __DEVICE__ static inline __attribute__((always_inline, nothrow)) |
| 21 | #else |
| 22 | #define __DEVICE__ static __device__ inline __attribute__((always_inline)) |
| 23 | #endif |
| 24 | |
| 25 | __DEVICE__ |
| 26 | int abs(int __x) { |
| 27 | int __sgn = __x >> (sizeof(int) * CHAR_BIT - 1); |
| 28 | return (__x ^ __sgn) - __sgn; |
| 29 | } |
| 30 | __DEVICE__ |
| 31 | long labs(long __x) { |
| 32 | long __sgn = __x >> (sizeof(long) * CHAR_BIT - 1); |
| 33 | return (__x ^ __sgn) - __sgn; |
| 34 | } |
| 35 | __DEVICE__ |
| 36 | long long llabs(long long __x) { |
| 37 | long long __sgn = __x >> (sizeof(long long) * CHAR_BIT - 1); |
| 38 | return (__x ^ __sgn) - __sgn; |
| 39 | } |
| 40 | |
| 41 | #endif // !defined(__cplusplus) |
| 42 | |
| 43 | #endif // #define __CLANG_HIP_STDLIB_H__ |
| 44 |
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