| //NB: special ieee754 arithmetic logic is not applied to Int comparison |
| fun myEquals(a: Int?, b: Int?) = a == b |
| |
| fun myEquals1(a: Int?, b: Int) = a == b |
| |
| fun myEquals2(a: Int, b: Int?) = a == b |
| |
| fun myEquals0(a: Int, b: Int) = a == b |
| |
| |
| fun box(): String { |
| if (!myEquals(null, null)) return "fail 1" |
| if (myEquals(null, 0)) return "fail 2" |
| if (myEquals(0, null)) return "fail 3" |
| if (!myEquals(0, 0)) return "fail 4" |
| |
| if (myEquals1(null, 0)) return "fail 5" |
| if (!myEquals1(0, 0)) return "fail 6" |
| |
| if (myEquals2(0, null)) return "fail 7" |
| if (!myEquals2(0, 0)) return "fail 8" |
| |
| if (!myEquals0(0, 0)) return "fail 9" |
| |
| return "OK" |
| } |
