1 # This file is dual licensed under the terms of the Apache License, Version 2 # 2.0, and the BSD License. See the LICENSE file in the root of this repository 3 # for complete details. 4 from __future__ import absolute_import, division, print_function 5 6 7 class Infinity(object): 8 9 def __repr__(self): 10 return "Infinity" 11 12 def __hash__(self): 13 return hash(repr(self)) 14 15 def __lt__(self, other): 16 return False 17 18 def __le__(self, other): 19 return False 20 21 def __eq__(self, other): 22 return isinstance(other, self.__class__) 23 24 def __ne__(self, other): 25 return not isinstance(other, self.__class__) 26 27 def __gt__(self, other): 28 return True 29 30 def __ge__(self, other): 31 return True 32 33 def __neg__(self): 34 return NegativeInfinity 35 36 Infinity = Infinity() 37 38 39 class NegativeInfinity(object): 40 41 def __repr__(self): 42 return "-Infinity" 43 44 def __hash__(self): 45 return hash(repr(self)) 46 47 def __lt__(self, other): 48 return True 49 50 def __le__(self, other): 51 return True 52 53 def __eq__(self, other): 54 return isinstance(other, self.__class__) 55 56 def __ne__(self, other): 57 return not isinstance(other, self.__class__) 58 59 def __gt__(self, other): 60 return False 61 62 def __ge__(self, other): 63 return False 64 65 def __neg__(self): 66 return Infinity 67 68 NegativeInfinity = NegativeInfinity() 69
