working ucompare() for haxe.Int64 java and cs platforms (using my internal type defintions, sorry)

ucompare.hx

public static function ucompare(x:HaxeInt64abs,y:HaxeInt64abs):Int {
  #if ( java || cs )
		// unsigned compare library code does not work properly for these platforms 
		if(HaxeInt64Typedef.isZero(x)) {
			if(HaxeInt64Typedef.isZero(y)) {
				return 0;
			} else {
				return -1; // any value is larger than x 
			}
		}
		if(HaxeInt64Typedef.isZero(y)) { // if we are here, we know that x is non-zero
				return 1; // any value of x is larger than y 
		}
		if(!HaxeInt64Typedef.isNeg(x)) { // x +ve
			if(!HaxeInt64Typedef.isNeg(y)){ // both +ve so normal comparison
				return HaxeInt64Typedef.compare(x,y);
			}else{ // y -ve and so larger than x
				return -1;
			}
		}else { // x -ve
			if(!HaxeInt64Typedef.isNeg(y)){ // -ve x larger than +ve y
				return 1;
			}else{ // both are -ve so the normal comparison
				return HaxeInt64Typedef.compare(x,y); //eg -1::-7 gives -1--7 = +6 meaning -1 > -7 which is correct for unsigned
			}
		}
	#else
	 	return HaxeInt64Typedef.ucompare(x,y);
	#end
}