master
1const cmp = @import("cmp.zig");
2const testing = @import("std").testing;
3
4fn test__cmpsi2(a: i32, b: i32, expected: i32) !void {
5 const result = cmp.__cmpsi2(a, b);
6 try testing.expectEqual(expected, result);
7}
8
9test "cmpsi2" {
10 // minInt == -2147483648
11 // maxInt == 2147483647
12 // minInt/2 == -1073741824
13 // maxInt/2 == 1073741823
14 // 1. equality minInt, minInt+1, minInt/2, -1, 0, 1, maxInt/2, maxInt-1, maxInt
15 try test__cmpsi2(-2147483648, -2147483648, 1);
16 try test__cmpsi2(-2147483647, -2147483647, 1);
17 try test__cmpsi2(-1073741824, -1073741824, 1);
18 try test__cmpsi2(-1, -1, 1);
19 try test__cmpsi2(0, 0, 1);
20 try test__cmpsi2(1, 1, 1);
21 try test__cmpsi2(1073741823, 1073741823, 1);
22 try test__cmpsi2(2147483646, 2147483646, 1);
23 try test__cmpsi2(2147483647, 2147483647, 1);
24 // 2. cmp minInt, { minInt + 1, minInt/2, -1,0,1, maxInt/2, maxInt-1, maxInt}
25 try test__cmpsi2(-2147483648, -2147483647, 0);
26 try test__cmpsi2(-2147483648, -1073741824, 0);
27 try test__cmpsi2(-2147483648, -1, 0);
28 try test__cmpsi2(-2147483648, 0, 0);
29 try test__cmpsi2(-2147483648, 1, 0);
30 try test__cmpsi2(-2147483648, 1073741823, 0);
31 try test__cmpsi2(-2147483648, 2147483646, 0);
32 try test__cmpsi2(-2147483648, 2147483647, 0);
33 // 3. cmp minInt+1, {minInt, minInt/2, -1,0,1, maxInt/2, maxInt-1, maxInt}
34 try test__cmpsi2(-2147483647, -2147483648, 2);
35 try test__cmpsi2(-2147483647, -1073741824, 0);
36 try test__cmpsi2(-2147483647, -1, 0);
37 try test__cmpsi2(-2147483647, 0, 0);
38 try test__cmpsi2(-2147483647, 1, 0);
39 try test__cmpsi2(-2147483647, 1073741823, 0);
40 try test__cmpsi2(-2147483647, 2147483646, 0);
41 try test__cmpsi2(-2147483647, 2147483647, 0);
42 // 4. cmp minInt/2, {minInt, minInt + 1, -1,0,1, maxInt/2, maxInt-1, maxInt}
43 try test__cmpsi2(-1073741824, -2147483648, 2);
44 try test__cmpsi2(-1073741824, -2147483647, 2);
45 try test__cmpsi2(-1073741824, -1, 0);
46 try test__cmpsi2(-1073741824, 0, 0);
47 try test__cmpsi2(-1073741824, 1, 0);
48 try test__cmpsi2(-1073741824, 1073741823, 0);
49 try test__cmpsi2(-1073741824, 2147483646, 0);
50 try test__cmpsi2(-1073741824, 2147483647, 0);
51 // 5. cmp -1, {minInt, minInt + 1, minInt/2, 0,1, maxInt/2, maxInt-1, maxInt}
52 try test__cmpsi2(-1, -2147483648, 2);
53 try test__cmpsi2(-1, -2147483647, 2);
54 try test__cmpsi2(-1, -1073741824, 2);
55 try test__cmpsi2(-1, 0, 0);
56 try test__cmpsi2(-1, 1, 0);
57 try test__cmpsi2(-1, 1073741823, 0);
58 try test__cmpsi2(-1, 2147483646, 0);
59 try test__cmpsi2(-1, 2147483647, 0);
60 // 6. cmp 0, {minInt, minInt + 1, minInt/2, -1, 1, maxInt/2, maxInt-1, maxInt}
61 try test__cmpsi2(0, -2147483648, 2);
62 try test__cmpsi2(0, -2147483647, 2);
63 try test__cmpsi2(0, -1073741824, 2);
64 try test__cmpsi2(0, -1, 2);
65 try test__cmpsi2(0, 1, 0);
66 try test__cmpsi2(0, 1073741823, 0);
67 try test__cmpsi2(0, 2147483646, 0);
68 try test__cmpsi2(0, 2147483647, 0);
69 // 7. cmp 1, {minInt, minInt + 1, minInt/2, -1,0, maxInt/2, maxInt-1, maxInt}
70 try test__cmpsi2(1, -2147483648, 2);
71 try test__cmpsi2(1, -2147483647, 2);
72 try test__cmpsi2(1, -1073741824, 2);
73 try test__cmpsi2(1, -1, 2);
74 try test__cmpsi2(1, 0, 2);
75 try test__cmpsi2(1, 1073741823, 0);
76 try test__cmpsi2(1, 2147483646, 0);
77 try test__cmpsi2(1, 2147483647, 0);
78 // 8. cmp maxInt/2, {minInt, minInt + 1, minInt/2, -1, 0, 1, maxInt-1, maxInt}
79 try test__cmpsi2(1073741823, -2147483648, 2);
80 try test__cmpsi2(1073741823, -2147483647, 2);
81 try test__cmpsi2(1073741823, -1073741824, 2);
82 try test__cmpsi2(1073741823, -1, 2);
83 try test__cmpsi2(1073741823, 0, 2);
84 try test__cmpsi2(1073741823, 1, 2);
85 try test__cmpsi2(1073741823, 2147483646, 0);
86 try test__cmpsi2(1073741823, 2147483647, 0);
87 // 9. cmp maxInt-1, {minInt, minInt + 1, minInt/2, -1, 0, 1, maxInt/2, maxInt}
88 try test__cmpsi2(2147483646, -2147483648, 2);
89 try test__cmpsi2(2147483646, -2147483647, 2);
90 try test__cmpsi2(2147483646, -1073741824, 2);
91 try test__cmpsi2(2147483646, -1, 2);
92 try test__cmpsi2(2147483646, 0, 2);
93 try test__cmpsi2(2147483646, 1, 2);
94 try test__cmpsi2(2147483646, 1073741823, 2);
95 try test__cmpsi2(2147483646, 2147483647, 0);
96 // 10.cmp maxInt, {minInt, minInt + 1, minInt/2, -1, 0, 1, maxInt/2, maxInt-1, }
97 try test__cmpsi2(2147483647, -2147483648, 2);
98 try test__cmpsi2(2147483647, -2147483647, 2);
99 try test__cmpsi2(2147483647, -1073741824, 2);
100 try test__cmpsi2(2147483647, -1, 2);
101 try test__cmpsi2(2147483647, 0, 2);
102 try test__cmpsi2(2147483647, 1, 2);
103 try test__cmpsi2(2147483647, 1073741823, 2);
104 try test__cmpsi2(2147483647, 2147483646, 2);
105}