void
test_OffsetCalculationNegativeOffset(void)
{
struct pkt rpkt;
l_fp reftime, tmp;
struct timeval dst;
double offset, precision, synch_distance;
rpkt.precision = -1;
rpkt.rootdelay = HTONS_FP(DTOUFP(0.5));
rpkt.rootdisp = HTONS_FP(DTOUFP(0.5));
/* Synch Distance is (0.5+0.5)/2.0, or 0.5 */
get_systime(&reftime);
HTONL_FP(&reftime, &rpkt.reftime);
/* T1 - Originate timestamp */
tmp.l_ui = 1000000001UL;
tmp.l_uf = 0UL;
HTONL_FP(&tmp, &rpkt.org);
/* T2 - Receive timestamp */
tmp.l_ui = 1000000000UL;
tmp.l_uf = 2147483648UL;
HTONL_FP(&tmp, &rpkt.rec);
/*/ T3 - Transmit timestamp */
tmp.l_ui = 1000000001UL;
tmp.l_uf = 2147483648UL;
HTONL_FP(&tmp, &rpkt.xmt);
/* T4 - Destination timestamp as standard timeval */
tmp.l_ui = 1000000003UL;
tmp.l_uf = 0UL;
TSTOTV(&tmp, &dst);
dst.tv_sec -= JAN_1970;
offset_calculation(&rpkt, LEN_PKT_NOMAC, &dst, &offset, &precision, &synch_distance);
TEST_ASSERT_EQUAL_DOUBLE(-1, offset);
TEST_ASSERT_EQUAL_DOUBLE(1. / ULOGTOD(1), precision);
TEST_ASSERT_EQUAL_DOUBLE(1.3333483333333334, synch_distance);
}
void
test_OffsetCalculationPositiveOffset(void) {
struct pkt rpkt;
rpkt.precision = -16; // 0,000015259
rpkt.rootdelay = HTONS_FP(DTOUFP(0.125));
rpkt.rootdisp = HTONS_FP(DTOUFP(0.25));
// Synch Distance: (0.125+0.25)/2.0 == 0.1875
l_fp reftime;
get_systime(&reftime);
HTONL_FP(&reftime, &rpkt.reftime);
l_fp tmp;
// T1 - Originate timestamp
tmp.l_ui = 1000000000UL;
tmp.l_uf = 0UL;
HTONL_FP(&tmp, &rpkt.org);
// T2 - Receive timestamp
tmp.l_ui = 1000000001UL;
tmp.l_uf = 2147483648UL;
HTONL_FP(&tmp, &rpkt.rec);
// T3 - Transmit timestamp
tmp.l_ui = 1000000002UL;
tmp.l_uf = 0UL;
HTONL_FP(&tmp, &rpkt.xmt);
// T4 - Destination timestamp as standard timeval
tmp.l_ui = 1000000001UL;
tmp.l_uf = 0UL;
struct timeval dst;
TSTOTV(&tmp, &dst);
dst.tv_sec -= JAN_1970;
double offset, precision, synch_distance;
offset_calculation(&rpkt, LEN_PKT_NOMAC, &dst, &offset, &precision, &synch_distance);
TEST_ASSERT_EQUAL_DOUBLE(1.25, offset);
TEST_ASSERT_EQUAL_DOUBLE(1. / ULOGTOD(16), precision);
// 1.1250150000000001 ?
TEST_ASSERT_EQUAL_DOUBLE(1.125015, synch_distance);
}
TEST_F(mainTest, OffsetCalculationNegativeOffset) {
pkt rpkt;
rpkt.precision = -1;
rpkt.rootdelay = HTONS_FP(DTOUFP(0.5));
rpkt.rootdisp = HTONS_FP(DTOUFP(0.5));
// Synch Distance is (0.5+0.5)/2.0, or 0.5
l_fp reftime;
get_systime(&reftime);
HTONL_FP(&reftime, &rpkt.reftime);
l_fp tmp;
// T1 - Originate timestamp
tmp.l_ui = 1000000001UL;
tmp.l_uf = 0UL;
HTONL_FP(&tmp, &rpkt.org);
// T2 - Receive timestamp
tmp.l_ui = 1000000000UL;
tmp.l_uf = 2147483648UL;
HTONL_FP(&tmp, &rpkt.rec);
// T3 - Transmit timestamp
tmp.l_ui = 1000000001UL;
tmp.l_uf = 2147483648UL;
HTONL_FP(&tmp, &rpkt.xmt);
// T4 - Destination timestamp as standard timeval
tmp.l_ui = 1000000003UL;
tmp.l_uf = 0UL;
timeval dst;
TSTOTV(&tmp, &dst);
dst.tv_sec -= JAN_1970;
double offset, precision, synch_distance;
offset_calculation(&rpkt, LEN_PKT_NOMAC, &dst, &offset, &precision, &synch_distance);
EXPECT_DOUBLE_EQ(-1, offset);
EXPECT_DOUBLE_EQ(1. / ULOGTOD(1), precision);
EXPECT_DOUBLE_EQ(1.3333483333333334, synch_distance);
}