Calculate if an Angle is Between Two Angles

This routine will check whether an angle is between two other angles specifying lower and upper bounds. If theta is determined to be within the bounds [lb,ub] a "true" value for idx is returned. This routine can handle all types of angle space including 0 to 2*pi and 0 to 360 as long as there are no negative values.

Function Calling Syntax:
>> idx = isAngBetween(theta,lb,ub)

Example Function Call in degrees:
>> idx = isAngBetween(45,0,90);

Example Function Call in Radians:
>> idx = isAngBetween(pi/4,0,pi/2);

To perform a vectorized self-test simply invoke the routine without any inputs via:
>> isAngBetween();

Remember to ensure that all angle inputs are constrained within either 0 and 2*pi or 0 and 360 degrees, this can be done using the "mod" operator in MATLAB.