}

//go:nosplit
func slowdodiv(n, d uint64) (q, r uint64) {
	if d == 0 {
		panicdivide()
	}

	// Set up the divisor and find the number of iterations needed.
	capn := n
	if n >= sign64 {
		capn = sign64
	}
	i := 0
	for d < capn {
		d <<= 1
		i++
	}

	for ; i >= 0; i-- {
		q <<= 1
		if n >= d {
			n -= d
			q |= 1
		}
		d >>= 1
	}
	return q, n
}