zig/lib/include/__clang_hip_stdlib.h
Andrew Kelley 85be0b8c65 update C headers to LLVM 16
upstream commit 0604154e006e88e9e7f82d8ee5fd076bda206613
2023-01-26 16:36:13 -07:00

44 lines
1.2 KiB
C
Vendored

/*===---- __clang_hip_stdlib.h - Device-side HIP math support --------------===
*
* 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 __CLANG_HIP_STDLIB_H__
#if !defined(__HIP__) && !defined(__OPENMP_AMDGCN__)
#error "This file is for HIP and OpenMP AMDGCN device compilation only."
#endif
#if !defined(__cplusplus)
#include <limits.h>
#ifdef __OPENMP_AMDGCN__
#define __DEVICE__ static inline __attribute__((always_inline, nothrow))
#else
#define __DEVICE__ static __device__ inline __attribute__((always_inline))
#endif
__DEVICE__
int abs(int __x) {
int __sgn = __x >> (sizeof(int) * CHAR_BIT - 1);
return (__x ^ __sgn) - __sgn;
}
__DEVICE__
long labs(long __x) {
long __sgn = __x >> (sizeof(long) * CHAR_BIT - 1);
return (__x ^ __sgn) - __sgn;
}
__DEVICE__
long long llabs(long long __x) {
long long __sgn = __x >> (sizeof(long long) * CHAR_BIT - 1);
return (__x ^ __sgn) - __sgn;
}
#endif // !defined(__cplusplus)
#endif // #define __CLANG_HIP_STDLIB_H__