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oot/include/alignment.h
Tharo 6d5287ff12
TwoHeadArena and TwoHeadGfxArena docs (#1349)
* TwoHeadArena and TwoHeadGfxArena docs, ALIGNOF macro

* AllocStart -> AllocHead , AllocEnd -> AllocTail

* Format

* Suggested changes

* Fix

* Further suggested changes
2022-11-13 18:29:50 -05:00

28 lines
661 B
C

#ifndef ALIGNMENT_H
#define ALIGNMENT_H
#define ALIGN8(val) (((val) + 7) & ~7)
#define ALIGN16(val) (((val) + 0xF) & ~0xF)
#define ALIGN32(val) (((val) + 0x1F) & ~0x1F)
#define ALIGN64(val) (((val) + 0x3F) & ~0x3F)
#define ALIGN256(val) (((val) + 0xFF) & ~0xFF)
#ifdef __GNUC__
#define ALIGNED8 __attribute__ ((aligned (8)))
#else
#define ALIGNED8
#endif
#ifdef __sgi /* IDO compiler */
#define ALIGNOF(x) __builtin_alignof(x)
#elif (__STDC_VERSION__ >= 201112L) /* C11 */
#define ALIGNOF(x) _Alignof(x)
#else /* __GNUC__ */
#define ALIGNOF(x) __alignof__(x)
#endif
#define ALIGN_MASK(n) (~((n) - 1))
#define ALIGNOF_MASK(x) ALIGN_MASK(ALIGNOF(x))
#endif