ucmpsi2_test.zig (1859B) - Raw
1 const cmp = @import("cmp.zig"); 2 const testing = @import("std").testing; 3 4 fn test__ucmpsi2(a: u32, b: u32, expected: i32) !void { 5 const result = cmp.__ucmpsi2(a, b); 6 try testing.expectEqual(expected, result); 7 } 8 9 test "ucmpsi2" { 10 // minInt == 0 11 // maxInt == 4294967295 12 // minInt/2 == 0 13 // maxInt/2 == 2147483647 14 // 1. equality 0, 1 maxInt/2, maxInt-1, maxInt 15 try test__ucmpsi2(0, 0, 1); 16 try test__ucmpsi2(1, 1, 1); 17 try test__ucmpsi2(2147483647, 2147483647, 1); 18 try test__ucmpsi2(4294967294, 4294967294, 1); 19 try test__ucmpsi2(4294967295, 4294967295, 1); 20 // 2. cmp minInt, {0, 1, maxInt/2, maxInt-1, maxInt} 21 try test__ucmpsi2(0, 1, 0); 22 try test__ucmpsi2(0, 2147483647, 0); 23 try test__ucmpsi2(0, 4294967294, 0); 24 try test__ucmpsi2(0, 4294967295, 0); 25 // 3. cmp minInt+1, {minInt, 0, maxInt/2, maxInt-1, maxInt} 26 try test__ucmpsi2(1, 0, 2); 27 try test__ucmpsi2(1, 2147483647, 0); 28 try test__ucmpsi2(1, 4294967294, 0); 29 try test__ucmpsi2(1, 4294967295, 0); 30 // 4. cmp minInt/2==minInt, {} 31 // 5. cmp -1 {} 32 // 6. cmp 0==minInt,{} 33 // 7. cmp 1==minInt+1, {} 34 // 8. cmp maxInt/2, {0, maxInt-1, maxInt} 35 try test__ucmpsi2(2147483647, 0, 2); 36 try test__ucmpsi2(2147483647, 1, 2); 37 try test__ucmpsi2(2147483647, 4294967294, 0); 38 try test__ucmpsi2(2147483647, 4294967295, 0); 39 // 9. cmp maxInt-1, {0,1,2, maxInt/2, maxInt} 40 try test__ucmpsi2(4294967294, 0, 2); 41 try test__ucmpsi2(4294967294, 1, 2); 42 try test__ucmpsi2(4294967294, 2147483647, 2); 43 try test__ucmpsi2(4294967294, 4294967295, 0); 44 // 10.cmp maxInt, {0,1,2, maxInt/2, maxInt-1} 45 try test__ucmpsi2(4294967295, 0, 2); 46 try test__ucmpsi2(4294967295, 1, 2); 47 try test__ucmpsi2(4294967295, 2147483647, 2); 48 try test__ucmpsi2(4294967295, 4294967294, 2); 49 }