Bug report
Bug description:
>>> import math >>> math.ldexp(6993274598585239, -1126) 5e-324 >>>
The correct result would be 1e-323. This is obviously a bug in the Windows ldexp implementation (it works fine on Linux). But it would be good, if it could be fixed on the CPython side with a workaround.
math.ldexp is used by mpmath to round from multiprecision to float, leading to incorrect rounding on Windows.
CPython versions tested on:
3.13
Operating systems tested on:
Windows