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
55
56
|
#include "double_conversion.h"
#include <math.h>
#include <stdio.h>
static const double testvalues[] = {
0.0, -0.0, 0.1, -0.1,
M_PI, -M_PI, 123456.789, -123456.789,
INFINITY, -INFINITY, NAN, INFINITY - INFINITY,
1e38, -1e38, 1e39, -1e39,
1e-38, -1e-38, 1e-39, -1e-39,
3.14159e-37,-3.14159e-37, 3.14159e-43, -3.14159e-43,
1e-60, -1e-60, 1e-45, -1e-45,
0.99999999999999, -0.99999999999999, 127.999999999999, -127.999999999999
};
#define TESTVALUES_COUNT (sizeof(testvalues)/sizeof(testvalues[0]))
int main()
{
int status = 0;
int i;
for (i = 0; i < TESTVALUES_COUNT; i++)
{
double orig = testvalues[i];
float expected_float = (float)orig;
double expected_double = (double)expected_float;
float got_float = double_to_float(*(uint64_t*)&orig);
uint64_t got_double = float_to_double(got_float);
uint32_t e1 = *(uint32_t*)&expected_float;
uint32_t g1 = *(uint32_t*)&got_float;
uint64_t e2 = *(uint64_t*)&expected_double;
uint64_t g2 = got_double;
if (g1 != e1)
{
printf("%3d double_to_float fail: %08x != %08x\n", i, g1, e1);
status = 1;
}
if (g2 != e2)
{
printf("%3d float_to_double fail: %016llx != %016llx\n", i,
(unsigned long long)g2,
(unsigned long long)e2);
status = 1;
}
}
return status;
}
|
