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compat for timespecsub() and friends

This commit is contained in:
Damien Miller 2021-11-18 09:26:20 +11:00
parent fd7e7de4dd
commit 76292787a1
1 changed files with 33 additions and 0 deletions
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33
defines.h
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@ -532,6 +532,39 @@ struct winsize {
((tsp)->tv_sec cmp (usp)->tv_sec))
#endif
/* Operations on timespecs. */
#ifndef timespecclear
#define timespecclear(tsp) (tsp)->tv_sec = (tsp)->tv_nsec = 0
#endif
#ifndef timespeccmp
#define timespeccmp(tsp, usp, cmp) \
(((tsp)->tv_sec == (usp)->tv_sec) ? \
((tsp)->tv_nsec cmp (usp)->tv_nsec) : \
((tsp)->tv_sec cmp (usp)->tv_sec))
#endif
#ifndef timespecadd
#define timespecadd(tsp, usp, vsp) \
do { \
(vsp)->tv_sec = (tsp)->tv_sec + (usp)->tv_sec; \
(vsp)->tv_nsec = (tsp)->tv_nsec + (usp)->tv_nsec; \
if ((vsp)->tv_nsec >= 1000000000L) { \
(vsp)->tv_sec++; \
(vsp)->tv_nsec -= 1000000000L; \
} \
} while (0)
#endif
#ifndef timespecsub
#define timespecsub(tsp, usp, vsp) \
do { \
(vsp)->tv_sec = (tsp)->tv_sec - (usp)->tv_sec; \
(vsp)->tv_nsec = (tsp)->tv_nsec - (usp)->tv_nsec; \
if ((vsp)->tv_nsec < 0) { \
(vsp)->tv_sec--; \
(vsp)->tv_nsec += 1000000000L; \
} \
} while (0)
#endif
#ifndef __P
# define __P(x) x
#endif