Some computations hang

[rubenvannieuwpoort]

Example:

$ python
Python 3.10.6 (main, Aug 10 2022, 11:40:04) [GCC 11.3.0] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> from reals import pi, exp
>>> exp(pi - pi)

[rubenvannieuwpoort]

The computation of exp(x) that is currently used, works only when x != 0. A workaround is to compute exp(x) as exp(x - 1) * e.

[rubenvannieuwpoort]

Another example of a computation that hangs:

>>> from reals import cos
>>> f'{cos(1428599129020608582548671):.73f}'
'0.0000000000000000000000000608293384990614694490506501837196102750264145727'
>>> f'{cos(1428599129020608582548671):.74f}'

I have no idea what causes this, need to investigate.