PowD() ?

kenmo · Post by **kenmo** » Tue Oct 16, 2007 8:27 pm

Not mandatory, but has anyone on the PB team looked into a Pow function that returns double precision? I only ask because I'm writing a simple customized calculator program, that uses mostly PB's own functions, and double precision is wasted when Pow is used in a formula.

Thanks

Trond · Post by **Trond** » Tue Oct 16, 2007 8:34 pm

Pow() is already overloaded and returns a double value when used with doubles.

kenmo · Post by **kenmo** » Wed Oct 17, 2007 2:42 pm

Ah, thats good to know. Just wondering, why not overload the Str() functions then, instead of Str() StrF() StrD() StrQ()?

One more question while I'm here, why does StrD() return less precision than the double actually has?

Code: Select all

Pi.d = #PI
Debug Pi
Debug StrD(Pi)

#NULL · Post by **#NULL** » Wed Oct 17, 2007 2:59 pm

you can avoid it by specifying a higher nbDecimals parameter.

Trond · Post by **Trond** » Wed Oct 17, 2007 3:42 pm

kenmo wrote:Ah, thats good to know. Just wondering, why not overload the Str() functions then, instead of Str() StrF() StrD() StrQ()?

It works like this:

Code: Select all

A.d = Pow(2, 3) ; Double version of Pow()
B.f = Pow(2, 3) ; Single version of Pow()
C.s = Str(2) ; StrD() or StrF()???

kenmo · Post by **kenmo** » Thu Oct 18, 2007 1:10 am

#NULL, thanks, I don't know why I didn't think to try that!

Trond, I thought overloading meant slightly different functions with the same name that depended on the type of the input, not the type of the output?

DoubleDutch · Post by **DoubleDutch** » Thu Oct 18, 2007 8:24 am

Trond, I thought overloading meant slightly different functions with the same name that depended on the type of the input, not the type of the output?

It does, and it would be very useful.

Trond · Post by **Trond** » Thu Oct 18, 2007 10:28 am

kenmo wrote:#NULL, thanks, I don't know why I didn't think to try that!

Trond, I thought overloading meant slightly different functions with the same name that depended on the type of the input, not the type of the output?

Well, it depends on the output here.