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util: add functions for zeroing and comparing NTP timestamps

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This commit is contained in:
Miroslav Lichvar
2016-10-24 16:46:29 +02:00
parent 0e273939d2
commit 6e9c04896b
4 changed files with 67 additions and 30 deletions
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12
util.h
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@@ -126,8 +126,20 @@ extern void UTI_GetNtp64Fuzz(NTP_int64 *ts, int precision);
extern double UTI_Ntp32ToDouble(NTP_int32 x);
extern NTP_int32 UTI_DoubleToNtp32(double x);
/* Zero an NTP timestamp */
extern void UTI_ZeroNtp64(NTP_int64 *ts);
/* Check if an NTP timestamp is zero */
extern int UTI_IsZeroNtp64(NTP_int64 *ts);
/* Compare two NTP timestamps. Returns -1 if a is before b, 0 if a is equal to
b, and 1 if a is after b. */
extern int UTI_CompareNtp64(NTP_int64 *a, NTP_int64 *b);
/* Convert a timespec into an NTP timestamp */
extern void UTI_TimespecToNtp64(struct timespec *src, NTP_int64 *dest, NTP_int64 *fuzz);
/* Convert an NTP timestamp into a timespec */
extern void UTI_Ntp64ToTimespec(NTP_int64 *src, struct timespec *dest);
/* Check if time + offset is sane */