4-2. Judgement of the angle \(z\) by the angle \(θ\)

Described in principle in the CORDIC method and how the angle \(θ\) to be determined or is brought close. It must be noted on designing It is the angular relationship \(z\) and the angle \(θ\). Angle \(z\) approaches gradually to the angle \(θ\), but may still pass the angle \(θ\). Update value \(α_i\) becomes negative to return the angle passed at this time. I shown below this relation.

At this time, you are also involved value of \(δ_i\).

It is shown in Figure 6 To illustrate these circuits.

Figure6：Updated value of the determination of the angle z