
PASS addition of 2 angle units: deg plus deg 
PASS addition of 2 angle units: deg plus rad 
PASS addition of 2 angle units: deg plus grad 
PASS addition of 2 angle units: deg plus turn 
PASS addition of 2 angle units: rad plus rad 
PASS addition of 2 angle units: rad plus grad 
PASS addition of 2 angle units: rad plus turn 
PASS addition of 2 angle units: grad plus grad 
PASS addition of 2 angle units: grad plus turn 
PASS substraction of angle unit: deg minus deg 
PASS substraction of angle unit: deg minus rad 
PASS substraction of angle unit: deg minus grad 
PASS substraction of angle unit: deg minus turn 
PASS substraction of angle unit: rad minus rad 
PASS substraction of angle unit: rad minus grad 
PASS substraction of angle unit: rad minus turn 
PASS substraction of angle unit: grad minus grad 
PASS substraction of angle unit: grad minus turn 
PASS multiplication of angle unit: deg multiplied by int 
PASS multiplication of angle unit: int multiplied by rad 
PASS multiplication of angle unit: grad multiplied by int 
PASS multiplication of angle unit: int multiplied by turn 
PASS division of angle unit: deg divided by int 
PASS division of angle unit: rad divided by int 
PASS division of angle unit: grad divided by int 
PASS division of angle unit: turn divided by int 
PASS conversion of angle unit: grad into deg