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39 def safe_atan2(y, x): 40 if x == 0.0: 41 if y > 0: 42 return pi / 2.0 43 else: 44 return -pi / 2.0 45 else: 46 return atan2(y, x)
26 @wrap(['space', float]) 27 def acos(space, d): 28 """ acos - Arc cosine """ 29 try: 30 return space.wrap(math.acos(d)) 31 except OverflowError: 32 return space.wrap(rfloat.INFINITY) 33 except ValueError: 34 return space.wrap(rfloat.NAN)