1const __modti3 = @import("modti3.zig").__modti3;
 2const testing = @import("std").testing;
 3
 4fn test__modti3(a: i128, b: i128, expected: i128) !void {
 5    const x = __modti3(a, b);
 6    try testing.expect(x == expected);
 7}
 8
 9test "modti3" {
10    try test__modti3(0, 1, 0);
11    try test__modti3(0, -1, 0);
12    try test__modti3(5, 3, 2);
13    try test__modti3(5, -3, 2);
14    try test__modti3(-5, 3, -2);
15    try test__modti3(-5, -3, -2);
16
17    try test__modti3(0x8000000000000000, 1, 0x0);
18    try test__modti3(0x8000000000000000, -1, 0x0);
19    try test__modti3(0x8000000000000000, 2, 0x0);
20    try test__modti3(0x8000000000000000, -2, 0x0);
21    try test__modti3(0x8000000000000000, 3, 2);
22    try test__modti3(0x8000000000000000, -3, 2);
23
24    try test__modti3(make_ti(0x8000000000000000, 0), 1, 0x0);
25    try test__modti3(make_ti(0x8000000000000000, 0), -1, 0x0);
26    try test__modti3(make_ti(0x8000000000000000, 0), 2, 0x0);
27    try test__modti3(make_ti(0x8000000000000000, 0), -2, 0x0);
28    try test__modti3(make_ti(0x8000000000000000, 0), 3, -2);
29    try test__modti3(make_ti(0x8000000000000000, 0), -3, -2);
30}
31
32fn make_ti(high: u64, low: u64) i128 {
33    var result: u128 = high;
34    result <<= 64;
35    result |= low;
36    return @bitCast(result);
37}