/// <summary>
 /// Subtracts a rotation from a scalar value.
 /// </summary>
 public static Rot2f operator -(Rot2f rot, float angle)
 {
     return(Rot2f.Subtract(rot, angle));
 }
 /// <summary>
 /// Subtracts a rotation from a scalar value.
 /// </summary>
 public static Rot2f operator -(float angle, Rot2f rot)
 {
     return(Rot2f.Subtract(angle, rot));
 }
 /// <summary>
 /// Subtracts 2 rotations.
 /// </summary>
 public static Rot2f operator -(Rot2f r0, Rot2f r1)
 {
     return(Rot2f.Subtract(r0, r1));
 }