{
struct timespec ts, ts2, ts3, ts4;
char buf[16], *s, *s2, *words[3];
- NTP_int64 ntp_ts, ntp_fuzz;
+ NTP_int64 ntp_ts, ntp_ts2, ntp_fuzz;
NTP_int32 ntp32_ts;
struct timeval tv;
double x, y, nan, inf;
#endif
TEST_CHECK(ts.tv_nsec == 999999999);
+ ntp_ts.hi = htonl(JAN_1970 - 1);
+ ntp_ts.lo = htonl(0xffffffff);
+ ntp_ts2.hi = htonl(JAN_1970 + 1);
+ ntp_ts2.lo = htonl(0x80000000);
+ TEST_CHECK(fabs(UTI_DiffNtp64ToDouble(&ntp_ts, &ntp_ts2) + 1.5) < 1e-9);
+ TEST_CHECK(fabs(UTI_DiffNtp64ToDouble(&ntp_ts2, &ntp_ts) - 1.5) < 1e-9);
+
UTI_AddDoubleToTimespec(&ts, 1e-9, &ts);
#if defined(HAVE_LONG_TIME_T) && NTP_ERA_SPLIT > 0
TEST_CHECK(ts.tv_sec == 1 + 0x100000000LL * (1 + (NTP_ERA_SPLIT - 1) / 0x100000000LL));
/* ================================================== */
+double
+UTI_DiffNtp64ToDouble(const NTP_int64 *a, const NTP_int64 *b)
+{
+ /* Don't convert to timespec to allow any epoch */
+ return (int32_t)(ntohl(a->hi) - ntohl(b->hi)) +
+ ((double)ntohl(a->lo) - (double)ntohl(b->lo)) / (1.0e9 * NSEC_PER_NTP64);
+}
+
+/* ================================================== */
+
/* Maximum offset between two sane times */
#define MAX_OFFSET 4294967296.0
/* Convert an NTP timestamp into a timespec */
extern void UTI_Ntp64ToTimespec(const NTP_int64 *src, struct timespec *dest);
+/* Calculate a - b in any epoch */
+extern double UTI_DiffNtp64ToDouble(const NTP_int64 *a, const NTP_int64 *b);
+
/* Check if time + offset is sane */
extern int UTI_IsTimeOffsetSane(const struct timespec *ts, double offset);