>>> from funcmat import h

>>> print(round(h(0.0, 0.0), 4))
-0.0
>>> print(round(h(45.0, 1.99), 4))
-35.2667
>>> print(round(h(90.0, 0.0), 4))
-0.0
>>> print(round(h(-90.0, 2.4), 4))
-1.3636
>>> print(round(h(360.0, 0.0), 4))
0.0