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Add _ALIGN macro based on one in libmisc/shell/fts.c

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This commit is contained in:
Joel Sherrill 2012-04-04 17:47:18 -05:00
parent dc4c4909f0
commit 772d929a3c
1 changed files with 12 additions and 0 deletions
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12
freebsd/sys/param.h
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@ -155,6 +155,18 @@
#define MJUM9BYTES (9 * 1024) /* jumbo cluster 9k */
#define MJUM16BYTES (16 * 1024) /* jumbo cluster 16k */
/*
* Round p (pointer or byte index) up to a correctly-aligned value
* for all data types (int, long, ...). The result is u_long and
* must be cast to any desired pointer type.
*/
#ifndef _ALIGNBYTES
#define _ALIGNBYTES (sizeof(long) - 1)
#endif
#ifndef _ALIGN
#define _ALIGN(p) (((uintptr_t)(p) + _ALIGNBYTES) &~ _ALIGNBYTES)
#endif
/*
* Some macros for units conversion
*/