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authorJoshua Bakita <bakitajoshua@gmail.com>2023-06-28 18:24:25 -0400
committerJoshua Bakita <bakitajoshua@gmail.com>2023-06-28 18:24:25 -0400
commit01e6fac4d61fdd7fff5433942ec93fc2ea1e4df1 (patch)
tree4ef34501728a087be24f4ba0af90f91486bf780b /include/nvgpu/posix/log2.h
parent306a03d18b305e4e573be3b2931978fa10679eb9 (diff)
Include nvgpu headers
These are needed to build on NVIDIA's Jetson boards for the time being. Only a couple structs are required, so it should be fairly easy to remove this dependency at some point in the future.
Diffstat (limited to 'include/nvgpu/posix/log2.h')
-rw-r--r--include/nvgpu/posix/log2.h37
1 files changed, 37 insertions, 0 deletions
diff --git a/include/nvgpu/posix/log2.h b/include/nvgpu/posix/log2.h
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1/*
2 * Copyright (c) 2018, NVIDIA CORPORATION. All rights reserved.
3 *
4 * Permission is hereby granted, free of charge, to any person obtaining a
5 * copy of this software and associated documentation files (the "Software"),
6 * to deal in the Software without restriction, including without limitation
7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8 * and/or sell copies of the Software, and to permit persons to whom the
9 * Software is furnished to do so, subject to the following conditions:
10 *
11 * The above copyright notice and this permission notice shall be included in
12 * all copies or substantial portions of the Software.
13 *
14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
17 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
18 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
19 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
20 * DEALINGS IN THE SOFTWARE.
21 */
22
23#ifndef __NVGPU_POSIX_LOG2_H__
24#define __NVGPU_POSIX_LOG2_H__
25
26#define ilog2(x) (fls(x) - 1)
27
28#define roundup_pow_of_two(x) (1UL << fls((x) - 1))
29#define rounddown_pow_of_two(x) (1UL << (fls(x) - 1))
30
31#define is_power_of_2(x) \
32 ({ \
33 typeof(x) __x__ = (x); \
34 (__x__ != 0 && ((__x__ & (__x__ - 1)) == 0)); \
35 })
36
37#endif