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
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
|
const __floatuntidf = @import("floatuntidf.zig").__floatuntidf;
const testing = @import("std").testing;
fn test__floatuntidf(a: u128, expected: f64) !void {
const x = __floatuntidf(a);
try testing.expect(x == expected);
}
test "floatuntidf" {
try test__floatuntidf(0, 0.0);
try test__floatuntidf(1, 1.0);
try test__floatuntidf(2, 2.0);
try test__floatuntidf(20, 20.0);
try test__floatuntidf(0x7FFFFF8000000000, 0x1.FFFFFEp+62);
try test__floatuntidf(0x7FFFFFFFFFFFF800, 0x1.FFFFFFFFFFFFEp+62);
try test__floatuntidf(0x7FFFFF0000000000, 0x1.FFFFFCp+62);
try test__floatuntidf(0x7FFFFFFFFFFFF000, 0x1.FFFFFFFFFFFFCp+62);
try test__floatuntidf(make_ti(0x8000008000000000, 0), 0x1.000001p+127);
try test__floatuntidf(make_ti(0x8000000000000800, 0), 0x1.0000000000001p+127);
try test__floatuntidf(make_ti(0x8000010000000000, 0), 0x1.000002p+127);
try test__floatuntidf(make_ti(0x8000000000001000, 0), 0x1.0000000000002p+127);
try test__floatuntidf(make_ti(0x8000000000000000, 0), 0x1.000000p+127);
try test__floatuntidf(make_ti(0x8000000000000001, 0), 0x1.0000000000000002p+127);
try test__floatuntidf(0x0007FB72E8000000, 0x1.FEDCBAp+50);
try test__floatuntidf(0x0007FB72EA000000, 0x1.FEDCBA8p+50);
try test__floatuntidf(0x0007FB72EB000000, 0x1.FEDCBACp+50);
try test__floatuntidf(0x0007FB72EBFFFFFF, 0x1.FEDCBAFFFFFFCp+50);
try test__floatuntidf(0x0007FB72EC000000, 0x1.FEDCBBp+50);
try test__floatuntidf(0x0007FB72E8000001, 0x1.FEDCBA0000004p+50);
try test__floatuntidf(0x0007FB72E6000000, 0x1.FEDCB98p+50);
try test__floatuntidf(0x0007FB72E7000000, 0x1.FEDCB9Cp+50);
try test__floatuntidf(0x0007FB72E7FFFFFF, 0x1.FEDCB9FFFFFFCp+50);
try test__floatuntidf(0x0007FB72E4000001, 0x1.FEDCB90000004p+50);
try test__floatuntidf(0x0007FB72E4000000, 0x1.FEDCB9p+50);
try test__floatuntidf(0x023479FD0E092DC0, 0x1.1A3CFE870496Ep+57);
try test__floatuntidf(0x023479FD0E092DA1, 0x1.1A3CFE870496Dp+57);
try test__floatuntidf(0x023479FD0E092DB0, 0x1.1A3CFE870496Ep+57);
try test__floatuntidf(0x023479FD0E092DB8, 0x1.1A3CFE870496Ep+57);
try test__floatuntidf(0x023479FD0E092DB6, 0x1.1A3CFE870496Ep+57);
try test__floatuntidf(0x023479FD0E092DBF, 0x1.1A3CFE870496Ep+57);
try test__floatuntidf(0x023479FD0E092DC1, 0x1.1A3CFE870496Ep+57);
try test__floatuntidf(0x023479FD0E092DC7, 0x1.1A3CFE870496Ep+57);
try test__floatuntidf(0x023479FD0E092DC8, 0x1.1A3CFE870496Ep+57);
try test__floatuntidf(0x023479FD0E092DCF, 0x1.1A3CFE870496Ep+57);
try test__floatuntidf(0x023479FD0E092DD0, 0x1.1A3CFE870496Ep+57);
try test__floatuntidf(0x023479FD0E092DD1, 0x1.1A3CFE870496Fp+57);
try test__floatuntidf(0x023479FD0E092DD8, 0x1.1A3CFE870496Fp+57);
try test__floatuntidf(0x023479FD0E092DDF, 0x1.1A3CFE870496Fp+57);
try test__floatuntidf(0x023479FD0E092DE0, 0x1.1A3CFE870496Fp+57);
try test__floatuntidf(make_ti(0x023479FD0E092DC0, 0), 0x1.1A3CFE870496Ep+121);
try test__floatuntidf(make_ti(0x023479FD0E092DA1, 1), 0x1.1A3CFE870496Dp+121);
try test__floatuntidf(make_ti(0x023479FD0E092DB0, 2), 0x1.1A3CFE870496Ep+121);
try test__floatuntidf(make_ti(0x023479FD0E092DB8, 3), 0x1.1A3CFE870496Ep+121);
try test__floatuntidf(make_ti(0x023479FD0E092DB6, 4), 0x1.1A3CFE870496Ep+121);
try test__floatuntidf(make_ti(0x023479FD0E092DBF, 5), 0x1.1A3CFE870496Ep+121);
try test__floatuntidf(make_ti(0x023479FD0E092DC1, 6), 0x1.1A3CFE870496Ep+121);
try test__floatuntidf(make_ti(0x023479FD0E092DC7, 7), 0x1.1A3CFE870496Ep+121);
try test__floatuntidf(make_ti(0x023479FD0E092DC8, 8), 0x1.1A3CFE870496Ep+121);
try test__floatuntidf(make_ti(0x023479FD0E092DCF, 9), 0x1.1A3CFE870496Ep+121);
try test__floatuntidf(make_ti(0x023479FD0E092DD0, 0), 0x1.1A3CFE870496Ep+121);
try test__floatuntidf(make_ti(0x023479FD0E092DD1, 11), 0x1.1A3CFE870496Fp+121);
try test__floatuntidf(make_ti(0x023479FD0E092DD8, 12), 0x1.1A3CFE870496Fp+121);
try test__floatuntidf(make_ti(0x023479FD0E092DDF, 13), 0x1.1A3CFE870496Fp+121);
try test__floatuntidf(make_ti(0x023479FD0E092DE0, 14), 0x1.1A3CFE870496Fp+121);
}
fn make_ti(high: u64, low: u64) u128 {
var result: u128 = high;
result <<= 64;
result |= low;
return result;
}
|
