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106 lines
4.7 KiB
Zig
106 lines
4.7 KiB
Zig
const cmp = @import("cmp.zig");
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const testing = @import("std").testing;
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fn test__cmpsi2(a: i32, b: i32, expected: i32) !void {
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const result = cmp.__cmpsi2(a, b);
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try testing.expectEqual(expected, result);
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}
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test "cmpsi2" {
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// minInt == -2147483648
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// maxInt == 2147483647
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// minInt/2 == -1073741824
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// maxInt/2 == 1073741823
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// 1. equality minInt, minInt+1, minInt/2, -1, 0, 1, maxInt/2, maxInt-1, maxInt
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try test__cmpsi2(-2147483648, -2147483648, 1);
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try test__cmpsi2(-2147483647, -2147483647, 1);
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try test__cmpsi2(-1073741824, -1073741824, 1);
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try test__cmpsi2(-1, -1, 1);
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try test__cmpsi2(0, 0, 1);
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try test__cmpsi2(1, 1, 1);
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try test__cmpsi2(1073741823, 1073741823, 1);
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try test__cmpsi2(2147483646, 2147483646, 1);
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try test__cmpsi2(2147483647, 2147483647, 1);
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// 2. cmp minInt, { minInt + 1, minInt/2, -1,0,1, maxInt/2, maxInt-1, maxInt}
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try test__cmpsi2(-2147483648, -2147483647, 0);
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try test__cmpsi2(-2147483648, -1073741824, 0);
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try test__cmpsi2(-2147483648, -1, 0);
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try test__cmpsi2(-2147483648, 0, 0);
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try test__cmpsi2(-2147483648, 1, 0);
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try test__cmpsi2(-2147483648, 1073741823, 0);
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try test__cmpsi2(-2147483648, 2147483646, 0);
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try test__cmpsi2(-2147483648, 2147483647, 0);
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// 3. cmp minInt+1, {minInt, minInt/2, -1,0,1, maxInt/2, maxInt-1, maxInt}
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try test__cmpsi2(-2147483647, -2147483648, 2);
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try test__cmpsi2(-2147483647, -1073741824, 0);
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try test__cmpsi2(-2147483647, -1, 0);
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try test__cmpsi2(-2147483647, 0, 0);
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try test__cmpsi2(-2147483647, 1, 0);
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try test__cmpsi2(-2147483647, 1073741823, 0);
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try test__cmpsi2(-2147483647, 2147483646, 0);
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try test__cmpsi2(-2147483647, 2147483647, 0);
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// 4. cmp minInt/2, {minInt, minInt + 1, -1,0,1, maxInt/2, maxInt-1, maxInt}
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try test__cmpsi2(-1073741824, -2147483648, 2);
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try test__cmpsi2(-1073741824, -2147483647, 2);
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try test__cmpsi2(-1073741824, -1, 0);
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try test__cmpsi2(-1073741824, 0, 0);
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try test__cmpsi2(-1073741824, 1, 0);
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try test__cmpsi2(-1073741824, 1073741823, 0);
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try test__cmpsi2(-1073741824, 2147483646, 0);
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try test__cmpsi2(-1073741824, 2147483647, 0);
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// 5. cmp -1, {minInt, minInt + 1, minInt/2, 0,1, maxInt/2, maxInt-1, maxInt}
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try test__cmpsi2(-1, -2147483648, 2);
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try test__cmpsi2(-1, -2147483647, 2);
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try test__cmpsi2(-1, -1073741824, 2);
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try test__cmpsi2(-1, 0, 0);
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try test__cmpsi2(-1, 1, 0);
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try test__cmpsi2(-1, 1073741823, 0);
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try test__cmpsi2(-1, 2147483646, 0);
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try test__cmpsi2(-1, 2147483647, 0);
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// 6. cmp 0, {minInt, minInt + 1, minInt/2, -1, 1, maxInt/2, maxInt-1, maxInt}
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try test__cmpsi2(0, -2147483648, 2);
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try test__cmpsi2(0, -2147483647, 2);
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try test__cmpsi2(0, -1073741824, 2);
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try test__cmpsi2(0, -1, 2);
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try test__cmpsi2(0, 1, 0);
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try test__cmpsi2(0, 1073741823, 0);
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try test__cmpsi2(0, 2147483646, 0);
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try test__cmpsi2(0, 2147483647, 0);
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// 7. cmp 1, {minInt, minInt + 1, minInt/2, -1,0, maxInt/2, maxInt-1, maxInt}
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try test__cmpsi2(1, -2147483648, 2);
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try test__cmpsi2(1, -2147483647, 2);
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try test__cmpsi2(1, -1073741824, 2);
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try test__cmpsi2(1, -1, 2);
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try test__cmpsi2(1, 0, 2);
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try test__cmpsi2(1, 1073741823, 0);
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try test__cmpsi2(1, 2147483646, 0);
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try test__cmpsi2(1, 2147483647, 0);
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// 8. cmp maxInt/2, {minInt, minInt + 1, minInt/2, -1, 0, 1, maxInt-1, maxInt}
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try test__cmpsi2(1073741823, -2147483648, 2);
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try test__cmpsi2(1073741823, -2147483647, 2);
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try test__cmpsi2(1073741823, -1073741824, 2);
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try test__cmpsi2(1073741823, -1, 2);
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try test__cmpsi2(1073741823, 0, 2);
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try test__cmpsi2(1073741823, 1, 2);
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try test__cmpsi2(1073741823, 2147483646, 0);
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try test__cmpsi2(1073741823, 2147483647, 0);
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// 9. cmp maxInt-1, {minInt, minInt + 1, minInt/2, -1, 0, 1, maxInt/2, maxInt}
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try test__cmpsi2(2147483646, -2147483648, 2);
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try test__cmpsi2(2147483646, -2147483647, 2);
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try test__cmpsi2(2147483646, -1073741824, 2);
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try test__cmpsi2(2147483646, -1, 2);
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try test__cmpsi2(2147483646, 0, 2);
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try test__cmpsi2(2147483646, 1, 2);
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try test__cmpsi2(2147483646, 1073741823, 2);
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try test__cmpsi2(2147483646, 2147483647, 0);
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// 10.cmp maxInt, {minInt, minInt + 1, minInt/2, -1, 0, 1, maxInt/2, maxInt-1, }
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try test__cmpsi2(2147483647, -2147483648, 2);
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try test__cmpsi2(2147483647, -2147483647, 2);
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try test__cmpsi2(2147483647, -1073741824, 2);
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try test__cmpsi2(2147483647, -1, 2);
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try test__cmpsi2(2147483647, 0, 2);
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try test__cmpsi2(2147483647, 1, 2);
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try test__cmpsi2(2147483647, 1073741823, 2);
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try test__cmpsi2(2147483647, 2147483646, 2);
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}
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