exponential

[vinnie]

if i am building a console application, what code should i us to make
an exponential operation?

For example 4^2 = 8

If i use the ^ symbol, i get an error

thanks

[Marc Gravell]

Math.Pow?

[vinnie]

On Sep 1, 5:44 pm, Marc Gravell <[e-mail]:

Math.Pow?

how?

deciaml a = 4;
decimal b = 3;

then?

[=?ISO-8859-1?Q?Arne_Vajh=F8j?=]

vinnie wrote:

On Sep 1, 5:44 pm, Marc Gravell <[e-mail]:

>Math.Pow?

how?

deciaml a = 4;
decimal b = 3;

then?

Math.Pow(a,b) works for double, int etc. but not for
decimal.

If the second argument really is decimal, then I think you will
need to convert to double, pow and then convert the result back.

If the second argument is really an integer (which seems more
likely), then you can easily write your own Pow.

Arne

[Jon Skeet [C# MVP]]

vinnie <ce**********@gmail.comwrote:

On Sep 1, 5:44 pm, Marc Gravell <[e-mail]:

Math.Pow?

how?

deciaml a = 4;
decimal b = 3;

then?

There's nothing in the framework that provides powers for decimals.
You'd have to use doubles instead. You can cast back to decimal
afterwards, of course.

decimal a = 4;
decimal b = 3;

decimal x = (decimal) Math.Pow((double)a, (double)b);

--
Jon Skeet - <sk***@pobox.com>
http://www.pobox.com/~skeet Blog: http://www.msmvps.com/jon.skeet
If replying to the group, please do not mail me too

[Mark Rae [MVP]]

"vinnie" <ce**********@gmail.comwrote in message
news:11**********************@19g2000hsx.googlegro ups.com...

>Math.Pow?

how?

deciaml a = 4;
decimal b = 3;

then?

double a = 4;
double b = 3;
double c = Math.Pow(a, b); // == 4^3

http://msdn2.microsoft.com/en-us/lib...ow(vs.80).aspx
--
Mark Rae
ASP.NET MVP
http://www.markrae.net

[Marc Gravell]

maybe the error is the operation you are applying

The odd thing is: I didn't even look at the math! (and I'm normally a
pedant...)

Good spot ;-p

Marc

[Aiscrim]

The odd thing is: I didn't even look at the math! (and I'm normally a

pedant...)

Not as pedant as me! :-)