switch v := vals[i].(type) {
	case int:
		vals[i] = int(m.mutateInt(int64(v), maxInt))
	case int8:
		vals[i] = int8(m.mutateInt(int64(v), math.MaxInt8))
	case int16:
		vals[i] = int16(m.mutateInt(int64(v), math.MaxInt16))
	case int64:
		vals[i] = m.mutateInt(v, maxInt)
	case uint:
		vals[i] = uint(m.mutateUInt(uint64(v), maxUint))
	case uint16:
		vals[i] = uint16(m.mutateUInt(uint64(v), math.MaxUint16))
	case uint32: