Power operator precedence

[Helder Correia]

SpeedCrunch currently evaluates "-3^2" as "9". I'm not sure whether
this is correct.
So far I think the correct result would be "-9" because the power
should be evaluated first.
In turn, "(-3)^2" returns (correctly) "9" and "-(3^2)" returns (correctly) "-9".

In fact, "-(3)^2" even returns "9", which is the weirdest case in my opinion.

Or at least I think so. What about you?

[Marco Wegner]

2007/6/25, Helder Correia <helder.pere...@gmail.com>:

SpeedCrunch currently evaluates "-3^2" as "9". I'm not sure whether
this is correct.

Yes, I do agree that "-3^2" should rather be evaluated as "-(3^2)". At least that's what I would expect.
The same should apply to "-3!" which should evaluate as "-(3!)" resulting in "-6". Currently you get "NaN" which suggests that it's rather "(-3)!".
 

In fact, "-(3)^2" even returns "9", which is the weirdest case in my opinion.

No, I don't think this is weird at all since the expression in the brackets is evaluated first and becomes just "3" (without the brackets). Which means that you get the same expression as the one above: "-3^2". So both terms should evaluate the same. Which they do ;-)

Regards,
Marco

[Ariya Hidayat]

I agree with you guys. -3^2 should definitely give -9.

Can someone file it as an issue so that it won't get lost?

Regards,

Ariya

[ookami]

The power operator has usually higher priority than the unary -
operator.

Wolf Lammen