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util: add conversion between intervals and NTP 64-bit format

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This will be needed to save PTP correction in NTP timestamp format.
This commit is contained in:
Miroslav Lichvar
2023-09-21 14:02:11 +02:00
parent e08a0ee668
commit bf616eafa1
3 changed files with 72 additions and 0 deletions
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41
test/unit/util.c
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@@ -253,6 +253,47 @@ test_unit(void)
TEST_CHECK(UTI_IsEqualAnyNtp64(&ntp_ts, NULL, NULL, &ntp_ts));
TEST_CHECK(!UTI_IsEqualAnyNtp64(&ntp_ts, &ntp_fuzz, &ntp_fuzz, &ntp_fuzz));
ntp_ts.hi = htonl(0);
ntp_ts.lo = htonl(0);
x = UTI_Ntp64ToDouble(&ntp_ts);
TEST_CHECK(fabs(x) < 1e-10);
UTI_DoubleToNtp64(x, &ntp_ts2);
TEST_CHECK(UTI_CompareNtp64(&ntp_ts, &ntp_ts2) == 0);
ntp_ts.hi = htonl(0);
ntp_ts.lo = htonl(0xffffffff);
x = UTI_Ntp64ToDouble(&ntp_ts);
TEST_CHECK(fabs(x - 1.0 + 0.23e-9) < 1e-10);
UTI_DoubleToNtp64(x, &ntp_ts2);
TEST_CHECK(fabs(UTI_DiffNtp64ToDouble(&ntp_ts, &ntp_ts2)) < 0.3e-9);
ntp_ts.hi = htonl(0xffffffff);
ntp_ts.lo = htonl(0xffffffff);
x = UTI_Ntp64ToDouble(&ntp_ts);
TEST_CHECK(fabs(x + 0.23e-9) < 1e-10);
UTI_DoubleToNtp64(x, &ntp_ts2);
TEST_CHECK(fabs(UTI_DiffNtp64ToDouble(&ntp_ts, &ntp_ts2)) < 0.3e-9);
ntp_ts.hi = htonl(0x80000000);
ntp_ts.lo = htonl(0);
x = UTI_Ntp64ToDouble(&ntp_ts);
TEST_CHECK(fabs(x + 0x80000000) < 1e-10);
UTI_DoubleToNtp64(x, &ntp_ts2);
TEST_CHECK(fabs(UTI_DiffNtp64ToDouble(&ntp_ts, &ntp_ts2)) < 0.3e-9);
ntp_ts.hi = htonl(0x7fffffff);
ntp_ts.lo = htonl(0xffffffff);
x = UTI_Ntp64ToDouble(&ntp_ts);
TEST_CHECK(fabs(x - 2147483648) < 1.0);
ntp_ts.lo = htonl(0);
ntp_ts.hi = htonl(0x7fffffff);
UTI_DoubleToNtp64(0x7fffffff + 0.1, &ntp_ts2);
TEST_CHECK(UTI_CompareNtp64(&ntp_ts, &ntp_ts2) == 0);
ntp_ts.hi = htonl(0x80000000);
UTI_DoubleToNtp64(0x80000000 - 0.1, &ntp_ts);
TEST_CHECK(UTI_CompareNtp64(&ntp_ts, &ntp_ts2) == 0);
ts.tv_sec = 1;
ts.tv_nsec = 2;
ts2.tv_sec = 1;