/*
 * Copyright 2016-2017 Haiku, Inc. All Rights Reserved.
 * Distributed under the terms of the MIT License.
 */
#ifndef _BSD_SYS_TIME_H_
#define _BSD_SYS_TIME_H_


#include_next <sys/time.h>
#include <features.h>


#ifdef _DEFAULT_SOURCE


/* BSDish macros operating on timespec structs */
#define timespecadd(a, b, res)                                                  \
        do {                                                                                            \
                (res)->tv_sec = (a)->tv_sec + (b)->tv_sec;              \
                (res)->tv_nsec = (a)->tv_nsec + (b)->tv_nsec;   \
                if ((res)->tv_nsec >= 1000000000L) {                    \
                        (res)->tv_nsec -= 1000000000L;                          \
                        (res)->tv_sec++;                                                        \
                }                                                                                               \
        } while (0)
#define timespecsub(a, b, res)                                                  \
        do {                                                                                            \
                (res)->tv_sec = (a)->tv_sec - (b)->tv_sec;              \
                (res)->tv_nsec = (a)->tv_nsec - (b)->tv_nsec;   \
                if ((res)->tv_nsec < 0) {                                               \
                        (res)->tv_nsec += 1000000000L;                          \
                        (res)->tv_sec--;                                                        \
                }                                                                                               \
        } while (0)
#define timespecclear(a)        ((a)->tv_sec = (a)->tv_nsec = 0)
#define timespecisset(a)        ((a)->tv_sec != 0 || (a)->tv_nsec != 0)
#define timespeccmp(a, b, cmp)  (((a)->tv_sec == (b)->tv_sec) \
        ? ((a)->tv_nsec cmp (b)->tv_nsec) : ((a)->tv_sec cmp (b)->tv_sec))
#define timespecvalid_interval(a)       ((a)->tv_sec >= 0       \
        && (a)->tv_nsec >= 0 && (&)->tv_nsec < 1000000000L)

#define TIMEVAL_TO_TIMESPEC(tv, ts) do {                                \
        (ts)->tv_sec = (tv)->tv_sec;                                    \
        (ts)->tv_nsec = (tv)->tv_usec * 1000;                           \
} while (0)
#define TIMESPEC_TO_TIMEVAL(tv, ts) do {                                \
        (tv)->tv_sec = (ts)->tv_sec;                                    \
        (tv)->tv_usec = (ts)->tv_nsec / 1000;                           \
} while (0)

#ifdef __cplusplus
extern "C" {
#endif

int  lutimes(const char *path, const struct timeval times[2]);

#ifdef __cplusplus
}
#endif


#endif


#endif  /* _BSD_SYS_TIME_H_ */