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Home Page: http://mod.readthedocs.io
License: MIT License
Modular arithmetic in Python :100:
Home Page: http://mod.readthedocs.io
License: MIT License
The floordiv method of the Mod class contains 'print(self, converted, converted.inverse())', which can create intrusive output if you use the '//' operator.
>>> mod.Mod(0, 13) // 6
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "/usr/local/lib/python3.9/site-packages/mod.py", line 198, in __floordiv__
inverted = (other * self.inverse)
File "/usr/local/lib/python3.9/site-packages/mod.py", line 104, in inverse
raise ValueError("the value {} cannot be inverted".format(self))
ValueError: the value (0 % 13) cannot be inverted
I would expect this to succeed with value (0 % 13)
It would be great to support optimized modular logarithm computation as well.
(Mod(2,2)**2, 2**2 %2)
gives ((1 % 2), 0)
Also, when the exponent is negative, modular inversion should be used so that (x**e) * (x**(-e)) == 1
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