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50 lines
2.8 KiB
Zig
50 lines
2.8 KiB
Zig
const cmp = @import("cmp.zig");
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const testing = @import("std").testing;
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fn test__ucmpti2(a: u128, b: u128, expected: i32) !void {
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const result = cmp.__ucmpti2(a, b);
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try testing.expectEqual(expected, result);
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}
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test "ucmpti2" {
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// minInt == 0
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// maxInt == 340282366920938463463374607431768211455
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// minInt/2 == 0
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// maxInt/2 == 170141183460469231731687303715884105727
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// 1. equality minInt, minInt+1, maxInt/2, maxInt-1, maxInt
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try test__ucmpti2(0, 0, 1);
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try test__ucmpti2(1, 1, 1);
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try test__ucmpti2(170141183460469231731687303715884105727, 170141183460469231731687303715884105727, 1);
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try test__ucmpti2(340282366920938463463374607431768211454, 340282366920938463463374607431768211454, 1);
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try test__ucmpti2(340282366920938463463374607431768211455, 340282366920938463463374607431768211455, 1);
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// 2. cmp minInt, {minInt + 1, maxInt/2, maxInt-1, maxInt}
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try test__ucmpti2(0, 1, 0);
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try test__ucmpti2(0, 170141183460469231731687303715884105727, 0);
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try test__ucmpti2(0, 340282366920938463463374607431768211454, 0);
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try test__ucmpti2(0, 340282366920938463463374607431768211455, 0);
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// 3. cmp minInt+1, {minInt, maxInt/2, maxInt-1, maxInt}
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try test__ucmpti2(1, 0, 2);
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try test__ucmpti2(1, 170141183460469231731687303715884105727, 0);
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try test__ucmpti2(1, 340282366920938463463374607431768211454, 0);
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try test__ucmpti2(1, 340282366920938463463374607431768211455, 0);
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// 4. cmp minInt/2, {}
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// 5. cmp -1, {}
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// 6. cmp 0, {}
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// 7. cmp 1, {}
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// 8. cmp maxInt/2, {}
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try test__ucmpti2(170141183460469231731687303715884105727, 0, 2);
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try test__ucmpti2(170141183460469231731687303715884105727, 1, 2);
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try test__ucmpti2(170141183460469231731687303715884105727, 340282366920938463463374607431768211454, 0);
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try test__ucmpti2(170141183460469231731687303715884105727, 340282366920938463463374607431768211455, 0);
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// 9. cmp maxInt-1, {minInt, minInt + 1, maxInt/2, maxInt}
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try test__ucmpti2(340282366920938463463374607431768211454, 0, 2);
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try test__ucmpti2(340282366920938463463374607431768211454, 1, 2);
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try test__ucmpti2(340282366920938463463374607431768211454, 170141183460469231731687303715884105727, 2);
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try test__ucmpti2(340282366920938463463374607431768211454, 340282366920938463463374607431768211455, 0);
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// 10.cmp maxInt, {minInt, minInt + 1, minInt/2, -2,-1,0,1,2, maxInt/2, maxInt-1, }
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try test__ucmpti2(340282366920938463463374607431768211455, 0, 2);
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try test__ucmpti2(340282366920938463463374607431768211455, 1, 2);
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try test__ucmpti2(340282366920938463463374607431768211455, 170141183460469231731687303715884105727, 2);
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try test__ucmpti2(340282366920938463463374607431768211455, 340282366920938463463374607431768211454, 2);
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}
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