aboutsummaryrefslogtreecommitdiff
path: root/lib/std/special/compiler_rt/fixsfti_test.zig
blob: 7149f300dbcbb444c3ff1ae92a97e6f01803f844 (plain)
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
const __fixsfti = @import("fixsfti.zig").__fixsfti;
const std = @import("std");
const math = std.math;
const testing = std.testing;

fn test__fixsfti(a: f32, expected: i128) !void {
    const x = __fixsfti(a);
    try testing.expect(x == expected);
}

test "fixsfti" {
    try test__fixsfti(-math.floatMax(f32), math.minInt(i128));

    try test__fixsfti(-0x1.FFFFFFFFFFFFFp+1023, math.minInt(i128));
    try test__fixsfti(-0x1.FFFFFFFFFFFFFp+1023, -0x80000000000000000000000000000000);

    try test__fixsfti(-0x1.0000000000000p+127, -0x80000000000000000000000000000000);
    try test__fixsfti(-0x1.FFFFFFFFFFFFFp+126, -0x80000000000000000000000000000000);
    try test__fixsfti(-0x1.FFFFFFFFFFFFEp+126, -0x80000000000000000000000000000000);
    try test__fixsfti(-0x1.FFFFFF0000000p+126, -0x80000000000000000000000000000000);
    try test__fixsfti(-0x1.FFFFFE0000000p+126, -0x7FFFFF80000000000000000000000000);
    try test__fixsfti(-0x1.FFFFFC0000000p+126, -0x7FFFFF00000000000000000000000000);

    try test__fixsfti(-0x1.0000000000001p+63, -0x8000000000000000);
    try test__fixsfti(-0x1.0000000000000p+63, -0x8000000000000000);
    try test__fixsfti(-0x1.FFFFFFFFFFFFFp+62, -0x8000000000000000);
    try test__fixsfti(-0x1.FFFFFFFFFFFFEp+62, -0x8000000000000000);

    try test__fixsfti(-0x1.FFFFFFp+62, -0x8000000000000000);
    try test__fixsfti(-0x1.FFFFFEp+62, -0x7fffff8000000000);
    try test__fixsfti(-0x1.FFFFFCp+62, -0x7fffff0000000000);

    try test__fixsfti(-0x1.000000p+31, -0x80000000);
    try test__fixsfti(-0x1.FFFFFFp+30, -0x80000000);
    try test__fixsfti(-0x1.FFFFFEp+30, -0x7FFFFF80);
    try test__fixsfti(-0x1.FFFFFCp+30, -0x7FFFFF00);

    try test__fixsfti(-2.01, -2);
    try test__fixsfti(-2.0, -2);
    try test__fixsfti(-1.99, -1);
    try test__fixsfti(-1.0, -1);
    try test__fixsfti(-0.99, 0);
    try test__fixsfti(-0.5, 0);
    try test__fixsfti(-math.floatMin(f32), 0);
    try test__fixsfti(0.0, 0);
    try test__fixsfti(math.floatMin(f32), 0);
    try test__fixsfti(0.5, 0);
    try test__fixsfti(0.99, 0);
    try test__fixsfti(1.0, 1);
    try test__fixsfti(1.5, 1);
    try test__fixsfti(1.99, 1);
    try test__fixsfti(2.0, 2);
    try test__fixsfti(2.01, 2);

    try test__fixsfti(0x1.FFFFFCp+30, 0x7FFFFF00);
    try test__fixsfti(0x1.FFFFFEp+30, 0x7FFFFF80);
    try test__fixsfti(0x1.FFFFFFp+30, 0x80000000);
    try test__fixsfti(0x1.000000p+31, 0x80000000);

    try test__fixsfti(0x1.FFFFFCp+62, 0x7FFFFF0000000000);
    try test__fixsfti(0x1.FFFFFEp+62, 0x7FFFFF8000000000);
    try test__fixsfti(0x1.FFFFFFp+62, 0x8000000000000000);

    try test__fixsfti(0x1.FFFFFFFFFFFFEp+62, 0x8000000000000000);
    try test__fixsfti(0x1.FFFFFFFFFFFFFp+62, 0x8000000000000000);
    try test__fixsfti(0x1.0000000000000p+63, 0x8000000000000000);
    try test__fixsfti(0x1.0000000000001p+63, 0x8000000000000000);

    try test__fixsfti(0x1.FFFFFC0000000p+126, 0x7FFFFF00000000000000000000000000);
    try test__fixsfti(0x1.FFFFFE0000000p+126, 0x7FFFFF80000000000000000000000000);
    try test__fixsfti(0x1.FFFFFF0000000p+126, 0x7FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF);
    try test__fixsfti(0x1.FFFFFFFFFFFFEp+126, 0x7FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF);
    try test__fixsfti(0x1.FFFFFFFFFFFFFp+126, 0x7FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF);
    try test__fixsfti(0x1.0000000000000p+127, 0x7FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF);

    try test__fixsfti(0x1.FFFFFFFFFFFFFp+1023, 0x7FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF);
    try test__fixsfti(0x1.FFFFFFFFFFFFFp+1023, math.maxInt(i128));

    try test__fixsfti(math.floatMax(f32), math.maxInt(i128));
}