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#ifndef UTIL_H
#define UTIL_H
#include <stdint.h>
#define NULL ((void *)0)
#define LEN(arr) (sizeof arr / sizeof arr[0])
#define BIT(b) (1UL << b)
typedef int8_t s8;
typedef uint8_t u8;
typedef int16_t s16;
typedef uint16_t u16;
typedef int32_t s32;
typedef uint32_t u32;
typedef int64_t s64;
typedef uint64_t u64;
typedef float f32;
typedef double f64;
#endif /* UTIL_H */
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