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/*
* util.h - utility definitions
*/
#ifndef __UTIL_H__
#define __UTIL_H__
#include <assert.h>
#include <stdlib.h>
#include "compat.h"
/* likely() and unlikely() macros */
#define likely(x) __builtin_expect(!!(x), 1)
#define unlikely(x) __builtin_expect(!!(x), 0)
#ifndef BUG
#define BUG() abort()
#endif
#define BUG_ON(x) assert(!(x))
/* Force a compilation error if the condition is true */
#define BUILD_BUG_ON(condition) ((void)sizeof(struct { int: -!!(condition); }))
#define typecheck(type, x) \
({ \
type __dummy; \
typeof(x) __dummy2; \
(void)(&__dummy == &__dummy2); \
1; \
})
#define DIV_ROUND_UP(n, m) (((n) + (m) - 1) / (m))
#define ARRAY_SIZE(arr) (sizeof(arr) / sizeof((arr)[0]))
#define min_t(type, x, y) \
({ type __x = (x); type __y = (y); __x < __y ? __x : __y; })
#define max_t(type, x, y) \
({ type __x = (x); type __y = (y); __x > __y ? __x : __y; })
#define cnt64_gt(a, b) \
(typecheck(__u64, a) && typecheck(__u64, b) && \
((__s64)(b) - (__s64)(a) < 0))
#define cnt64_ge(a, b) \
(typecheck(__u64, a) && typecheck(__u64, b) && \
((__s64)(a) - (__s64)(b) >= 0))
#define cnt64_lt(a, b) cnt64_gt(b, a)
#define cnt64_le(a, b) cnt64_ge(b, a)
#define timeval_to_timespec(tv, ts) \
do { \
(ts)->tv_sec = (tv)->tv_sec; \
(ts)->tv_nsec = (tv)->tv_usec * 1000; \
} while (0)
#endif /* __UTIL_H__ */
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