1 /*
2  * SPDX-License-Identifier: BSD-2-Clause
3  *
4  * Copyright (c) 2019 Western Digital Corporation or its affiliates.
5  *
6  * Authors:
7  *   Anup Patel <anup.patel@wdc.com>
8  */
9 
10 #ifndef __SBI_BITS_H__
11 #define __SBI_BITS_H__
12 
13 #define likely(x) __builtin_expect((x), 1)
14 #define unlikely(x) __builtin_expect((x), 0)
15 
16 #define ROUNDUP(a, b) ((((a)-1) / (b) + 1) * (b))
17 #define ROUNDDOWN(a, b) ((a) / (b) * (b))
18 
19 #define MAX(a, b) ((a) > (b) ? (a) : (b))
20 #define MIN(a, b) ((a) < (b) ? (a) : (b))
21 #define CLAMP(a, lo, hi) MIN(MAX(a, lo), hi)
22 
23 #define EXTRACT_FIELD(val, which) (((val) & (which)) / ((which) & ~((which)-1)))
24 #define INSERT_FIELD(val, which, fieldval) \
25 	(((val) & ~(which)) | ((fieldval) * ((which) & ~((which)-1))))
26 
27 #define STR(x) XSTR(x)
28 #define XSTR(x) #x
29 
30 #define BIT_MASK(nr) (1UL << ((nr) % BITS_PER_LONG))
31 #define BIT_WORD(nr) ((nr) / BITS_PER_LONG)
32 #endif
33