>>-RxCalcArcTan(number--+--------------------------+--)-------->< | +--D--+ | +--, precision, --+--R--+--+ +--G--+

Returns the arctangent of number, where the result can be expressed in degree [D], radian [R], or grade [G] units.

Parameters:

- number
The number for which the arctangent is to be calculated.

- precision
The precision of the calculation. If a value is not specified, the precision of the calling Rexx activity is used. If the precision exceeds 16 digits, the call will fail.

- D
Indicates that the result is expressed in degrees. This is the default.

- R
Indicates that the result is expressed in radians.

- G
Indicates that the result is expressed in grades.