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Arctangent IQN

3-8

3Arctangent IQN

Purpose Calculate the four-quadrant arc tangent

Library tiiqmathlib in Embedded Target for TI C2000 DSP

Description This block computes the four-quadrant arc tangent of the IQ number inputs

and produces IQ number output.

Function option — Type of arc tangent to calculate, either

•

atan2 — Compute the four-quadrant arc tangent with output in radians

with values between -pi and +pi.

•

atan2PU — Compute the four-quadrant arc tangent per unit. If atan2(B,A)

is greater than or equal to zero,

atan2PU(B,A) = atan2(B,A)/2*pi.

Otherwise,

atan2PU(B,A) = atan2(B,A)/2*pi+1. The output is in per-unit

radians with values from 0 to 2pi radians.

Dialog Box

See Also

Absolute IQN, Division IQN, Float to IQN, Fractional part IQN, Fractional

part IQN x int32, Integer part IQN, Integer part IQN x int32, IQN to Float,

IQN x int32, IQN x IQN, IQN1 to IQN2, IQN1 x IQN2, Magnitude IQN,

Saturate IQN, Square Root IQN, Trig Fcn IQN

IQNatan2

IQmath

Arctangent IQN

1 2 ... 45 46 47 48 49 50 51 52 53 54 55 ... 111 112

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MATLAB EMBEDDED IDE LINK 4 - FOR USE WITH TEXAS INSTRUMENTS CODE COMPOSER STUDIO Guide de l'utilisateur Page 50