Piecewise cannot typecasted into number even if all conditions are evaluated.

[nkanazawa1989]

This is feature request for Piecewise to be automatically simplified when all conditions are evaluated.

Currently this code doesn't work due to NotImplemented error.

t = Symbol("t")
f = Piecewise((1j, t > 1), (1, True))
complex(f.subs(t, 0))

We always need to write

complex(f.subs(t, 0).simplify())

This looks like bit redundant and may cause performance issue (especially when this code is written in a function taking arbitrary f, i.e. unnecessary simplify is always called).

version: 0.8.1

[isuruf]

See symengine/symengine#1890