DWS/chrony
1
0
Fork 0
mirror of https://gitlab.com/chrony/chrony.git synced 2025-12-03 19:45:07 -05:00
Code Issues Packages Projects Releases Wiki Activity

util: add function to subtract NTP timestamps

Browse Source 
This will be needed to work with monotonic timestamps, which don't have
a stable epoch and cannot be converted to timespec.
This commit is contained in:
Miroslav Lichvar
2021-11-10 14:28:53 +01:00
parent a97ca73704
commit a652ce7d0e
3 changed files with 21 additions and 1 deletions
Download Patch File Download Diff File Expand all files Collapse all files

9
test/unit/util.c
View File

@@ -34,7 +34,7 @@ test_unit(void)
{
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;
@@ -114,6 +114,13 @@ test_unit(void)
#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));