In other contexts (which the use of NaN (not-a-number) suggests), +0 is a number. If it is defined in IEEE754 floating point arithmetic. (There is a -0 too).

So 10 / +0 is "positive infinity" and 10 / -0 is "negative infinity".

See http://en.wikipedia.org/wiki/Division_by_zero#Division_by_zero_in_computer_arithmetic for more gory details.

But - as others have noted - this probably does nothing in perl. (Although - can you overload unary plus? If so, someone might be doing something Too Clever.)

In reply to Re: return +0 by jbert
in thread return +0 by arunvelusamy

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