include/uapi/linux/bits.h

   1 /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
   2 /* bits.h: Macros for dealing with bitmasks.  */
   3
   4 #ifndef _UAPI_LINUX_BITS_H
   5 #define _UAPI_LINUX_BITS_H
   6
   7 #define __GENMASK(h, l) \
   8         (((~_UL(0)) - (_UL(1) << (l)) + 1) & \
   9          (~_UL(0) >> (__BITS_PER_LONG - 1 - (h))))
  10
  11 #define __GENMASK_ULL(h, l) \
  12         (((~_ULL(0)) - (_ULL(1) << (l)) + 1) & \
  13          (~_ULL(0) >> (__BITS_PER_LONG_LONG - 1 - (h))))
  14
  15 #define __GENMASK_U128(h, l) \
  16         ((_BIT128((h)) << 1) - (_BIT128(l)))
  17
  18 #endif /* _UAPI_LINUX_BITS_H */