checkdiv3(^x, y)
	checkdiv3(x, ^y)
	checkdiv3(^x, ^y)
}

var ntest int64 = 0

func checkdiv3(x, y uint64) {
	ntest++
	if ntest&(ntest-1) == 0 && long {
		println(ntest, "...")
	}
	checkuint64(x, y)
	if (uint64(uint32(x)) == x || uint64(uint32(^x)) == ^x) && (uint64(uint32(y)) == y || uint64(uint32(^y)) == ^y) {
		checkuint32(uint32(x), uint32(y))
	}