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]

Math.Pow?

how?

deciaml a = 4;
decimal b = 3;

then?

 

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

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]]

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);

 

[Mark Rae [MVP]]

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/library/system.math.pow(vs.80).aspx

 

[Aiscrim]

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

If you want to obtain 8 from the numbers 4 and 2, maybe the error is the
operation you are applying: try to substitute the ^ symbol with the * symbol
and everything should work.

^_^

 

[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!