Floats with different representation are equal

[eendebakpt]

A minimal example:

from sympy import sin, cos, re, im, Float

n = sin(1)**2 + cos(1)**2 - 1
w=n.n(2)
print(f'w: {repr(w)}: type {type(w)} mpf {w._mpf_}')

w2=Float((1, 1, -365, 1))
print(f'w2: {(w2)}: type {type(w2)} mpf {w2._mpf_}')

print(f'equal? {w==w2}')

If the representations of w and w2 differ, the result of w==w2 should not be True

Found when analysing #23565

@oscarbenjamin

[oscarbenjamin]

See #20033