Wrong code in SAC NormalParallelPlane

[nenadpol]

Documentation for SAC MODEL NORMAL PEARALLEL PLANE is clear "... In
addition, the plane normal must lie parallel to an user-specified axis."

So computed plane normal and user defined axis should be parallel within
defined treshold .

Take a look at the code:

---

if (fabs (axis_.dot (coeff)) < cos_angle_)
return (false);

---

axis_.dot(coeff) is cosinus (angle between plane normal and user defined
axis).

cos_angle_ is cosinus ( defined treshold).

If axis_.dot(coeff) should be inside treshold then why is code returning
FALSE?

[Chungzuwalla]

Is it because cosine of the angle gets smaller as the angle gets larger? If angular threshold is 5° and coeff angle is 7°, return false, if coeff angle is 3°, don't return false.
7 > 5, cos(7°) < cos(5°).
3 < 5, cos(3°) > cos(5°).

[mvieth]

@Chungzuwalla is correct. Can this issue be closed?