sbi_bits.h 870 B

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  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. #ifndef __SBI_BITS_H__
  10. #define __SBI_BITS_H__
  11. #define likely(x) __builtin_expect((x), 1)
  12. #define unlikely(x) __builtin_expect((x), 0)
  13. #define ROUNDUP(a, b) ((((a)-1) / (b) + 1) * (b))
  14. #define ROUNDDOWN(a, b) ((a) / (b) * (b))
  15. #define MAX(a, b) ((a) > (b) ? (a) : (b))
  16. #define MIN(a, b) ((a) < (b) ? (a) : (b))
  17. #define CLAMP(a, lo, hi) MIN(MAX(a, lo), hi)
  18. #define EXTRACT_FIELD(val, which) (((val) & (which)) / ((which) & ~((which)-1)))
  19. #define INSERT_FIELD(val, which, fieldval) \
  20. (((val) & ~(which)) | ((fieldval) * ((which) & ~((which)-1))))
  21. #define STR(x) XSTR(x)
  22. #define XSTR(x) #x
  23. #define BIT_MASK(nr) (1UL << ((nr) % BITS_PER_LONG))
  24. #define BIT_WORD(nr) ((nr) / BITS_PER_LONG)
  25. #endif