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#ifndef __RTT_LIBC_H__
#define __RTT_LIBC_H__
#include <sys/time.h>
#define MILLISECOND_PER_SECOND 1000UL
#define MICROSECOND_PER_SECOND 1000000UL
#define NANOSECOND_PER_SECOND 1000000000UL
#define MILLISECOND_PER_TICK (MILLISECOND_PER_SECOND / RT_TICK_PER_SECOND)
#define MICROSECOND_PER_TICK (MICROSECOND_PER_SECOND / RT_TICK_PER_SECOND)
#define NANOSECOND_PER_TICK (NANOSECOND_PER_SECOND / RT_TICK_PER_SECOND)
int libc_system_init(void);
/* some time related function */
int libc_set_time(const struct timespec *time);
int libc_get_time(struct timespec *time);
int libc_time_to_tick(const struct timespec *time);
#endif
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