Too large negative exponential number returns 0 but not -Infinity. Can someone explain this?

Question

This is a strange behaviour.

1e-325
=> 0

but

1e+325
=> Infinity

and

-100...(decimal 1e-325 value)
=> -Infinity

Answer 1

The value 1e-325 is a positive number. It's very, very close to zero. It's equal to 1 / 1e+325 (well, conceptually equal). The value 1e+325 is positive, and so is 1.