1const cmp = @import("cmp.zig");
  2const testing = @import("std").testing;
  3
  4fn test__cmpdi2(a: i64, b: i64, expected: i64) !void {
  5    const result = cmp.__cmpdi2(a, b);
  6    try testing.expectEqual(expected, result);
  7}
  8
  9test "cmpdi2" {
 10    // minInt == -9223372036854775808
 11    // maxInt == 9223372036854775807
 12    // minInt/2 == -4611686018427387904
 13    // maxInt/2 == 4611686018427387903
 14    // 1. equality minInt, minInt+1, minInt/2, 0, maxInt/2, maxInt-1, maxInt
 15    try test__cmpdi2(-9223372036854775808, -9223372036854775808, 1);
 16    try test__cmpdi2(-9223372036854775807, -9223372036854775807, 1);
 17    try test__cmpdi2(-4611686018427387904, -4611686018427387904, 1);
 18    try test__cmpdi2(-1, -1, 1);
 19    try test__cmpdi2(0, 0, 1);
 20    try test__cmpdi2(1, 1, 1);
 21    try test__cmpdi2(4611686018427387903, 4611686018427387903, 1);
 22    try test__cmpdi2(9223372036854775806, 9223372036854775806, 1);
 23    try test__cmpdi2(9223372036854775807, 9223372036854775807, 1);
 24    // 2. cmp minInt,   {        minInt + 1, minInt/2, -1, 0, 1, maxInt/2, maxInt-1, maxInt}
 25    try test__cmpdi2(-9223372036854775808, -9223372036854775807, 0);
 26    try test__cmpdi2(-9223372036854775808, -4611686018427387904, 0);
 27    try test__cmpdi2(-9223372036854775808, -1, 0);
 28    try test__cmpdi2(-9223372036854775808, 0, 0);
 29    try test__cmpdi2(-9223372036854775808, 1, 0);
 30    try test__cmpdi2(-9223372036854775808, 4611686018427387903, 0);
 31    try test__cmpdi2(-9223372036854775808, 9223372036854775806, 0);
 32    try test__cmpdi2(-9223372036854775808, 9223372036854775807, 0);
 33    // 3. cmp minInt+1, {minInt,             minInt/2, -1,0,1, maxInt/2, maxInt-1, maxInt}
 34    try test__cmpdi2(-9223372036854775807, -9223372036854775808, 2);
 35    try test__cmpdi2(-9223372036854775807, -4611686018427387904, 0);
 36    try test__cmpdi2(-9223372036854775807, -1, 0);
 37    try test__cmpdi2(-9223372036854775807, 0, 0);
 38    try test__cmpdi2(-9223372036854775807, 1, 0);
 39    try test__cmpdi2(-9223372036854775807, 4611686018427387903, 0);
 40    try test__cmpdi2(-9223372036854775807, 9223372036854775806, 0);
 41    try test__cmpdi2(-9223372036854775807, 9223372036854775807, 0);
 42    // 4. cmp minInt/2, {minInt, minInt + 1,           -1,0,1, maxInt/2, maxInt-1, maxInt}
 43    try test__cmpdi2(-4611686018427387904, -9223372036854775808, 2);
 44    try test__cmpdi2(-4611686018427387904, -9223372036854775807, 2);
 45    try test__cmpdi2(-4611686018427387904, -1, 0);
 46    try test__cmpdi2(-4611686018427387904, 0, 0);
 47    try test__cmpdi2(-4611686018427387904, 1, 0);
 48    try test__cmpdi2(-4611686018427387904, 4611686018427387903, 0);
 49    try test__cmpdi2(-4611686018427387904, 9223372036854775806, 0);
 50    try test__cmpdi2(-4611686018427387904, 9223372036854775807, 0);
 51    // 5. cmp -1,       {minInt, minInt + 1, minInt/2,    0,1, maxInt/2, maxInt-1, maxInt}
 52    try test__cmpdi2(-1, -9223372036854775808, 2);
 53    try test__cmpdi2(-1, -9223372036854775807, 2);
 54    try test__cmpdi2(-1, -4611686018427387904, 2);
 55    try test__cmpdi2(-1, 0, 0);
 56    try test__cmpdi2(-1, 1, 0);
 57    try test__cmpdi2(-1, 4611686018427387903, 0);
 58    try test__cmpdi2(-1, 9223372036854775806, 0);
 59    try test__cmpdi2(-1, 9223372036854775807, 0);
 60    // 6. cmp 0,        {minInt, minInt + 1, minInt/2, -1,  1, maxInt/2, maxInt-1, maxInt}
 61    try test__cmpdi2(0, -9223372036854775808, 2);
 62    try test__cmpdi2(0, -9223372036854775807, 2);
 63    try test__cmpdi2(0, -4611686018427387904, 2);
 64    try test__cmpdi2(0, -1, 2);
 65    try test__cmpdi2(0, 1, 0);
 66    try test__cmpdi2(0, 4611686018427387903, 0);
 67    try test__cmpdi2(0, 9223372036854775806, 0);
 68    try test__cmpdi2(0, 9223372036854775807, 0);
 69    // 7. cmp 1,        {minInt, minInt + 1, minInt/2, -1,0,  maxInt/2, maxInt-1, maxInt}
 70    try test__cmpdi2(1, -9223372036854775808, 2);
 71    try test__cmpdi2(1, -9223372036854775807, 2);
 72    try test__cmpdi2(1, -4611686018427387904, 2);
 73    try test__cmpdi2(1, -1, 2);
 74    try test__cmpdi2(1, 0, 2);
 75    try test__cmpdi2(1, 4611686018427387903, 0);
 76    try test__cmpdi2(1, 9223372036854775806, 0);
 77    try test__cmpdi2(1, 9223372036854775807, 0);
 78    // 8. cmp maxInt/2, {minInt, minInt + 1, minInt/2, -1,0,1,           maxInt-1, maxInt}
 79    try test__cmpdi2(4611686018427387903, -9223372036854775808, 2);
 80    try test__cmpdi2(4611686018427387903, -9223372036854775807, 2);
 81    try test__cmpdi2(4611686018427387903, -4611686018427387904, 2);
 82    try test__cmpdi2(4611686018427387903, -1, 2);
 83    try test__cmpdi2(4611686018427387903, 0, 2);
 84    try test__cmpdi2(4611686018427387903, 1, 2);
 85    try test__cmpdi2(4611686018427387903, 9223372036854775806, 0);
 86    try test__cmpdi2(4611686018427387903, 9223372036854775807, 0);
 87    // 9. cmp maxInt-1, {minInt, minInt + 1, minInt/2, -1,0,1, maxInt/2,           maxInt}
 88    try test__cmpdi2(9223372036854775806, -9223372036854775808, 2);
 89    try test__cmpdi2(9223372036854775806, -9223372036854775807, 2);
 90    try test__cmpdi2(9223372036854775806, -4611686018427387904, 2);
 91    try test__cmpdi2(9223372036854775806, -1, 2);
 92    try test__cmpdi2(9223372036854775806, 0, 2);
 93    try test__cmpdi2(9223372036854775806, 1, 2);
 94    try test__cmpdi2(9223372036854775806, 4611686018427387903, 2);
 95    try test__cmpdi2(9223372036854775806, 9223372036854775807, 0);
 96    // 10.cmp maxInt,   {minInt, minInt + 1, minInt/2, -1,0,1, maxInt/2, maxInt-1,       }
 97    try test__cmpdi2(9223372036854775807, -9223372036854775808, 2);
 98    try test__cmpdi2(9223372036854775807, -9223372036854775807, 2);
 99    try test__cmpdi2(9223372036854775807, -4611686018427387904, 2);
100    try test__cmpdi2(9223372036854775807, -1, 2);
101    try test__cmpdi2(9223372036854775807, 0, 2);
102    try test__cmpdi2(9223372036854775807, 1, 2);
103    try test__cmpdi2(9223372036854775807, 4611686018427387903, 2);
104    try test__cmpdi2(9223372036854775807, 9223372036854775806, 2);
105}