1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
|
#include "g_lfptest.h"
extern "C" {
#include "timevalops.h"
};
// Required on Solaris for ldexp.
#include <math.h>
class tvtotsTest : public lfptest {
};
TEST_F(tvtotsTest, Seconds) {
timeval input = {500, 0}; // 500.0 s
l_fp expected = {500, 0};
l_fp actual;
TVTOTS(&input, &actual);
EXPECT_TRUE(IsEqual(expected, actual));
}
TEST_F(tvtotsTest, MicrosecondsRounded) {
/* 0.0005 can not be represented exact in a l_fp structure.
* It would equal to 2147483,648. This means that
* HALF_PROMILLE_UP (which is 2147484) should be
* the correct rounding. */
timeval input = {0, 500}; // 0.0005 exact
l_fp expected = {0, HALF_PROMILLE_UP};
l_fp actual;
TVTOTS(&input, &actual);
EXPECT_TRUE(IsEqual(expected, actual));
}
TEST_F(tvtotsTest, MicrosecondsExact) {
// 0.5 can be represented exact in both l_fp and timeval.
const timeval input = {10, 500000}; // 0.5 exact
const l_fp expected = {10, HALF}; // 0.5 exact
l_fp actual;
TVTOTS(&input, &actual);
// Compare the fractional part with an absolute error given.
EXPECT_EQ(expected.l_ui, actual.l_ui);
double expectedDouble, actualDouble;
M_LFPTOD(0, expected.l_uf, expectedDouble);
M_LFPTOD(0, actual.l_uf, actualDouble);
// The error should be less than 0.5 us
EXPECT_NEAR(expectedDouble, actualDouble, 0.0000005);
}
|
