mirror of
https://github.com/ziglang/zig.git
synced 2024-11-27 07:32:44 +00:00
20328e976f
- adds __cmpsi2, __cmpdi2, __cmpti2 - adds __ucmpsi2, __ucmpdi2, __ucmpti2 - use 2 if statements with 2 temporaries and a constant - tests: MIN, MIN+1, MIN/2, -1, 0, 1, MAX/2, MAX-1, MAX if applicable See #1290
50 lines
2.8 KiB
Zig
50 lines
2.8 KiB
Zig
const cmp = @import("cmp.zig");
|
|
const testing = @import("std").testing;
|
|
|
|
fn test__ucmpti2(a: u128, b: u128, expected: i32) !void {
|
|
var result = cmp.__ucmpti2(a, b);
|
|
try testing.expectEqual(expected, result);
|
|
}
|
|
|
|
test "ucmpti2" {
|
|
// minInt == 0
|
|
// maxInt == 340282366920938463463374607431768211455
|
|
// minInt/2 == 0
|
|
// maxInt/2 == 170141183460469231731687303715884105727
|
|
// 1. equality minInt, minInt+1, maxInt/2, maxInt-1, maxInt
|
|
try test__ucmpti2(0, 0, 1);
|
|
try test__ucmpti2(1, 1, 1);
|
|
try test__ucmpti2(170141183460469231731687303715884105727, 170141183460469231731687303715884105727, 1);
|
|
try test__ucmpti2(340282366920938463463374607431768211454, 340282366920938463463374607431768211454, 1);
|
|
try test__ucmpti2(340282366920938463463374607431768211455, 340282366920938463463374607431768211455, 1);
|
|
// 2. cmp minInt, {minInt + 1, maxInt/2, maxInt-1, maxInt}
|
|
try test__ucmpti2(0, 1, 0);
|
|
try test__ucmpti2(0, 170141183460469231731687303715884105727, 0);
|
|
try test__ucmpti2(0, 340282366920938463463374607431768211454, 0);
|
|
try test__ucmpti2(0, 340282366920938463463374607431768211455, 0);
|
|
// 3. cmp minInt+1, {minInt, maxInt/2, maxInt-1, maxInt}
|
|
try test__ucmpti2(1, 0, 2);
|
|
try test__ucmpti2(1, 170141183460469231731687303715884105727, 0);
|
|
try test__ucmpti2(1, 340282366920938463463374607431768211454, 0);
|
|
try test__ucmpti2(1, 340282366920938463463374607431768211455, 0);
|
|
// 4. cmp minInt/2, {}
|
|
// 5. cmp -1, {}
|
|
// 6. cmp 0, {}
|
|
// 7. cmp 1, {}
|
|
// 8. cmp maxInt/2, {}
|
|
try test__ucmpti2(170141183460469231731687303715884105727, 0, 2);
|
|
try test__ucmpti2(170141183460469231731687303715884105727, 1, 2);
|
|
try test__ucmpti2(170141183460469231731687303715884105727, 340282366920938463463374607431768211454, 0);
|
|
try test__ucmpti2(170141183460469231731687303715884105727, 340282366920938463463374607431768211455, 0);
|
|
// 9. cmp maxInt-1, {minInt, minInt + 1, maxInt/2, maxInt}
|
|
try test__ucmpti2(340282366920938463463374607431768211454, 0, 2);
|
|
try test__ucmpti2(340282366920938463463374607431768211454, 1, 2);
|
|
try test__ucmpti2(340282366920938463463374607431768211454, 170141183460469231731687303715884105727, 2);
|
|
try test__ucmpti2(340282366920938463463374607431768211454, 340282366920938463463374607431768211455, 0);
|
|
// 10.cmp maxInt, {minInt, minInt + 1, minInt/2, -2,-1,0,1,2, maxInt/2, maxInt-1, }
|
|
try test__ucmpti2(340282366920938463463374607431768211455, 0, 2);
|
|
try test__ucmpti2(340282366920938463463374607431768211455, 1, 2);
|
|
try test__ucmpti2(340282366920938463463374607431768211455, 170141183460469231731687303715884105727, 2);
|
|
try test__ucmpti2(340282366920938463463374607431768211455, 340282366920938463463374607431768211454, 2);
|
|
}
|