"""

module Arcus

Module Arcus provides a data type Arc, representing points on the unit circle, or an agular value in the range (-π,π]. For a point given as (sin(α), cos(α)), the absolutely lower value of both is stored. Quadrant information is stored by multiplying a corresponding power of two. For the first quadrant with α in [-π/4,π/4], the Float64 value of sin(α) is stored unchanged.

Usage:

using Arcus

a = Arc(radians)

b = Arc(s, c)

Trigonometric functions and arithmetic operations are available. Multiplication and division only with Real values.