WOLFRAM SYSTEM MODELER

atan3b

Obsolete function: Four quadrant inverse tangent (select solution that is closest to given angle y0)

Wolfram Language

In[1]:=
SystemModel["PlanarMechanics.Utilities.Functions.atan3b"]
Out[1]:=

Information

This function returns y = atan3(u1,u2,y0) such that tan(y) = u1/u2 and y is in the range: -pi < y-y0 < pi.
u2 may be zero, provided u1 is not zero. The difference to Modelica.Math.atan3(…) is that the derivatives of atan3 are explicitly defined here.

See also

atan3b_der for 1st derivative and atan3b_dder for 2nd derivative of this function.

Syntax

y = atan3b(u1, u2, y0)

Inputs (3)

u1

Type: Real

u2

Type: Real

y0

Default Value: 0

Type: Angle (rad)

Description: y shall be in the range: -pi < y-y0 < pi

Outputs (1)

y

Type: Angle (rad)

Revisions

DLR logo Developed 2010 at the DLR Institute of System Dynamics and Control