1 #include "double_conversion.h"
2 #include <math.h>
3 #include <stdio.h>
4
5 static const double testvalues[] = {
6 0.0, -0.0, 0.1, -0.1,
7 M_PI, -M_PI, 123456.789, -123456.789,
8 INFINITY, -INFINITY, NAN, INFINITY - INFINITY,
9 1e38, -1e38, 1e39, -1e39,
10 1e-38, -1e-38, 1e-39, -1e-39,
11 3.14159e-37,-3.14159e-37, 3.14159e-43, -3.14159e-43,
12 1e-60, -1e-60, 1e-45, -1e-45,
13 0.99999999999999, -0.99999999999999, 127.999999999999, -127.999999999999
14 };
15
16 #define TESTVALUES_COUNT (sizeof(testvalues)/sizeof(testvalues[0]))
17
main()18 int main()
19 {
20 int status = 0;
21 int i;
22 for (i = 0; i < TESTVALUES_COUNT; i++)
23 {
24 double orig = testvalues[i];
25 float expected_float = (float)orig;
26 double expected_double = (double)expected_float;
27
28 float got_float = double_to_float(*(uint64_t*)&orig);
29 uint64_t got_double = float_to_double(got_float);
30
31 uint32_t e1 = *(uint32_t*)&expected_float;
32 uint32_t g1 = *(uint32_t*)&got_float;
33 uint64_t e2 = *(uint64_t*)&expected_double;
34 uint64_t g2 = got_double;
35
36 if (g1 != e1)
37 {
38 printf("%3d double_to_float fail: %08x != %08x\n", i, g1, e1);
39 status = 1;
40 }
41
42 if (g2 != e2)
43 {
44 printf("%3d float_to_double fail: %016llx != %016llx\n", i,
45 (unsigned long long)g2,
46 (unsigned long long)e2);
47 status = 1;
48 }
49 }
50
51 return status;
52 }
53
54
55
56
57