if in+n > N {
		n = N - in
	}
	if out+n > N {
		n = N - out
	}
	return n
}

func doAllSlices(length, in, out int) {
	reset()
	n := copy(my8(output8[out:clamp(out+length)]), input8[in:clamp(in+length)])
	verify8(length, in, out, n)
	n = copy(my8(outputS[out:clamp(out+length)]), myS(inputS[in:clamp(in+length)]))
	verifyS(length, in, out, n)
	n = copy(my16(output16[out:clamp(out+length)]), input16[in:clamp(in+length)])