356 #define DECL_BITFIELD3(_a, _b, _c)                      \
 357         uint8_t _c, _b, _a
 358 #define DECL_BITFIELD4(_a, _b, _c, _d)                  \
 359         uint8_t _d, _c, _b, _a
 360 #define DECL_BITFIELD5(_a, _b, _c, _d, _e)              \
 361         uint8_t _e, _d, _c, _b, _a
 362 #define DECL_BITFIELD6(_a, _b, _c, _d, _e, _f)          \
 363         uint8_t _f, _e, _d, _c, _b, _a
 364 #define DECL_BITFIELD7(_a, _b, _c, _d, _e, _f, _g)      \
 365         uint8_t _g, _f, _e, _d, _c, _b, _a
 366 #define DECL_BITFIELD8(_a, _b, _c, _d, _e, _f, _g, _h)  \
 367         uint8_t _h, _g, _f, _e, _d, _c, _b, _a
 368 #else
 369 #error  One of _BIT_FIELDS_LTOH or _BIT_FIELDS_HTOL must be defined
 370 #endif  /* _BIT_FIELDS_LTOH */
 371 
 372 #if !defined(ARRAY_SIZE)
 373 #define ARRAY_SIZE(x)   (sizeof (x) / sizeof (x[0]))
 374 #endif
 375 













 376 #ifdef  __cplusplus
 377 }
 378 #endif
 379 
 380 #endif  /* _SYS_SYSMACROS_H */

 356 #define DECL_BITFIELD3(_a, _b, _c)                      \
 357         uint8_t _c, _b, _a
 358 #define DECL_BITFIELD4(_a, _b, _c, _d)                  \
 359         uint8_t _d, _c, _b, _a
 360 #define DECL_BITFIELD5(_a, _b, _c, _d, _e)              \
 361         uint8_t _e, _d, _c, _b, _a
 362 #define DECL_BITFIELD6(_a, _b, _c, _d, _e, _f)          \
 363         uint8_t _f, _e, _d, _c, _b, _a
 364 #define DECL_BITFIELD7(_a, _b, _c, _d, _e, _f, _g)      \
 365         uint8_t _g, _f, _e, _d, _c, _b, _a
 366 #define DECL_BITFIELD8(_a, _b, _c, _d, _e, _f, _g, _h)  \
 367         uint8_t _h, _g, _f, _e, _d, _c, _b, _a
 368 #else
 369 #error  One of _BIT_FIELDS_LTOH or _BIT_FIELDS_HTOL must be defined
 370 #endif  /* _BIT_FIELDS_LTOH */
 371 
 372 #if !defined(ARRAY_SIZE)
 373 #define ARRAY_SIZE(x)   (sizeof (x) / sizeof (x[0]))
 374 #endif
 375 
 376 /*
 377  * Add a value to a uint64_t that saturates at UINT64_MAX instead of wrapping
 378  * around.
 379  */
 380 #define UINT64_OVERFLOW_ADD(val, add) \
 381         ((val) > ((val) + (add)) ? (UINT64_MAX) : ((val) + (add)))
 382 
 383 /*
 384  * Convert to an int64, saturating at INT64_MAX.
 385  */
 386 #define UINT64_OVERFLOW_TO_INT64(uval) \
 387         (((uval) > INT64_MAX) ? INT64_MAX : (int64_t)(uval))
 388 
 389 #ifdef  __cplusplus
 390 }
 391 #endif
 392 
 393 #endif  /* _SYS_SYSMACROS_H */