50 lines
2.1 KiB
Zig
50 lines
2.1 KiB
Zig
|
const cmp = @import("cmp.zig");
|
||
|
|
const testing = @import("std").testing;
|
||
|
|
|
||
|
|
fn test__ucmpdi2(a: u64, b: u64, expected: i32) !void {
|
||
|
|
var result = cmp.__ucmpdi2(a, b);
|
||
|
|
try testing.expectEqual(expected, result);
|
||
|
|
}
|
||
|
|
|
||
|
|
test "ucmpdi2" {
|
||
|
|
// minInt == 0
|
||
|
|
// maxInt == 18446744073709551615
|
||
|
|
// minInt/2 == 0
|
||
|
|
// maxInt/2 == 9223372036854775807
|
||
|
|
// 1. equality minInt, minInt/2, 0, maxInt/2, maxInt
|
||
|
|
try test__ucmpdi2(0, 0, 1);
|
||
|
|
try test__ucmpdi2(1, 1, 1);
|
||
|
|
try test__ucmpdi2(9223372036854775807, 9223372036854775807, 1);
|
||
|
|
try test__ucmpdi2(18446744073709551614, 18446744073709551614, 1);
|
||
|
|
try test__ucmpdi2(18446744073709551615, 18446744073709551615, 1);
|
||
|
|
// 2. cmp minInt, {minInt + 1, maxInt/2, maxInt-1, maxInt}
|
||
|
|
try test__ucmpdi2(0, 1, 0);
|
||
|
|
try test__ucmpdi2(0, 9223372036854775807, 0);
|
||
|
|
try test__ucmpdi2(0, 18446744073709551614, 0);
|
||
|
|
try test__ucmpdi2(0, 18446744073709551615, 0);
|
||
|
|
// 3. cmp minInt+1, {minInt, maxInt/2, maxInt-1, maxInt}
|
||
|
|
try test__ucmpdi2(1, 0, 2);
|
||
|
|
try test__ucmpdi2(1, 9223372036854775807, 0);
|
||
|
|
try test__ucmpdi2(1, 18446744073709551614, 0);
|
||
|
|
try test__ucmpdi2(1, 18446744073709551615, 0);
|
||
|
|
// 4. cmp minInt/2, {}
|
||
|
|
// 5. cmp -1, {}
|
||
|
|
// 6. cmp 0, {}
|
||
|
|
// 7. cmp 1, {}
|
||
|
|
// 8. cmp maxInt/2, {minInt, minInt+1, maxInt-1, maxInt}
|
||
|
|
try test__ucmpdi2(9223372036854775807, 0, 2);
|
||
|
|
try test__ucmpdi2(9223372036854775807, 1, 2);
|
||
|
|
try test__ucmpdi2(9223372036854775807, 18446744073709551614, 0);
|
||
|
|
try test__ucmpdi2(9223372036854775807, 18446744073709551615, 0);
|
||
|
|
// 9. cmp maxInt-1, {minInt, minInt + 1, maxInt/2, maxInt}
|
||
|
|
try test__ucmpdi2(18446744073709551614, 0, 2);
|
||
|
|
try test__ucmpdi2(18446744073709551614, 1, 2);
|
||
|
|
try test__ucmpdi2(18446744073709551614, 9223372036854775807, 2);
|
||
|
|
try test__ucmpdi2(18446744073709551614, 18446744073709551615, 0);
|
||
|
|
// 10.cmp maxInt, {minInt, 1, maxInt/2, maxInt-1}
|
||
|
|
try test__ucmpdi2(18446744073709551615, 0, 2);
|
||
|
|
try test__ucmpdi2(18446744073709551615, 1, 2);
|
||
|
|
try test__ucmpdi2(18446744073709551615, 9223372036854775807, 2);
|
||
|
|
try test__ucmpdi2(18446744073709551615, 18446744073709551614, 2);
|
||
|
|
}
|