1// Ported from:
 2//
 3// https://github.com/llvm/llvm-project/commit/d674d96bc56c0f377879d01c9d8dfdaaa7859cdb/compiler-rt/test/builtins/Unit/divdf3_test.c
 4
 5const __divdf3 = @import("divdf3.zig").__divdf3;
 6const testing = @import("std").testing;
 7
 8fn compareResultD(result: f64, expected: u64) bool {
 9    const rep: u64 = @bitCast(result);
10
11    if (rep == expected) {
12        return true;
13    }
14    // test other possible NaN representation(signal NaN)
15    else if (expected == 0x7ff8000000000000) {
16        if ((rep & 0x7ff0000000000000) == 0x7ff0000000000000 and
17            (rep & 0xfffffffffffff) > 0)
18        {
19            return true;
20        }
21    }
22    return false;
23}
24
25fn test__divdf3(a: f64, b: f64, expected: u64) !void {
26    const x = __divdf3(a, b);
27    const ret = compareResultD(x, expected);
28    try testing.expect(ret == true);
29}
30
31test "divdf3" {
32    try test__divdf3(1.0, 3.0, 0x3fd5555555555555);
33    try test__divdf3(4.450147717014403e-308, 2.0, 0x10000000000000);
34    try test__divdf3(1.0, 0x1.fffffffffffffp-1, 0x3ff0000000000001);
35}