include/linux/align.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 #ifndef _LINUX_ALIGN_H
   3 #define _LINUX_ALIGN_H
   4
   5 #include <linux/const.h>
   6
   7 /* @a is a power of 2 value */
   8 #define ALIGN(x, a)             __ALIGN_KERNEL((x), (a))
   9 #define ALIGN_DOWN(x, a)        __ALIGN_KERNEL((x) - ((a) - 1), (a))
  10 #define __ALIGN_MASK(x, mask)   __ALIGN_KERNEL_MASK((x), (mask))
  11 #define PTR_ALIGN(p, a)         ((typeof(p))ALIGN((unsigned long)(p), (a)))
  12 #define PTR_ALIGN_DOWN(p, a)    ((typeof(p))ALIGN_DOWN((unsigned long)(p), (a)))
  13 #define IS_ALIGNED(x, a)                (((x) & ((typeof(x))(a) - 1)) == 0)
  14
  15 #endif  /* _LINUX_ALIGN_H */