[JAVA] Calculate Pi!

[Joe]

Yes! A very advanced mathematical..tool?

This is the brainchild of five straight hours of pondering the problem, resulting in 5 hours of detention to be served starting tomorrow, for insubordination when teachers told me to get to work.

public class CalculatePi {
  public static void main(String args[]) {
    System.out.println("Pi: " + 4 * Math.atan(1));
  }
}

I also managed to port it to Visual Basic after another three hours of work, mostly debugging.
Public Sub Main
    Call MsgBox(4 * Atan(1))
End Sub

You may use this in your programs for a royalty of 50cents per copy sold.

[Sidoh]

Wow, your teachers suck. -_-

[Newby]

How about pi?

Or (22 / 7) (isn't that supposed to be pi?)

[Joe]

Wow, your teachers suck. -_-

We didn't learn that in school son.

Newby, I doubt it. Just a sec..

EDIT -
No, but its close. 22/7=3.1428571

[deadly7]

How about pi?

Or (22 / 7) (isn't that supposed to be pi?)

I think it is.
Pi = the world's gayest number.

[Joe]

22/7 is 3.1428571. Pi is 3.141592 something.

EDIT -
deadly, actually, that would be infinity (the gayest number). At least you can add/subtract/multiply/divide something by pi and get something not pi.

Also, pi is not only a number, but the 16th letter in the greek alphabet.



STUPID -
Hm, are they going to start with hurricane gamma next year? I can just see it now "Hurricane Pi is coming!"

[Sidoh]

How about pi?

Or (22 / 7) (isn't that supposed to be pi?)

I think it is.
Pi = the world's gayest number.

No, it's not.  It's moderately close, but using a Pi constant on calculators is a lot more accurate than using 22/7.

[Joe]

How about pi?

Or (22 / 7) (isn't that supposed to be pi?)

I think it is.
Pi = the world's gayest number.

No, it's not. It's moderately close, but using a Pi constant on calculators is a lot more accurate than using 22/7.

Anyone here work at TI and know how that's done? I figure its probably 4*ATan(1) rounded to the nearest millionth or something.

[Sidoh]

Anyone here work at TI and know how that's done? I figure its probably 4*ATan(1) rounded to the nearest millionth or something.

How what's done?  Calculating Pi?  There's a stored constant for Pi in all TI model's I've ever used.  Calculating it is pretty dumb.  Plus, all TI model's I've seen round to the nearest 10th digit (or at least that's what I understand).

[trust]

infinity isn't a number.

I've debated it with my math teacher and that's what she says.

[iago]

Infinity isn't a number.  But, then, neither is 0, so eh?

And by the way, taking the atan of 1 isn't calculating Pi, since the forumla for arctan uses Pi.  It's like "calculating" the constant C in a=bC by setting b to 1.  You aren't calculating anything.  The best way to calculate Pi in Java is Math.PI, I believe.

To actually calculate Pi, it's an infinite formula.  You can keep going and it gets more and more accurate the longer you iterate, until you run out of room in your variable (unless you're using java.Math.BigDecimal, then you can go forever). 

I believe this is it:

[MyndFyre]

What is that, the sequence of squares over odd numbers (roughly)?

[iago]

Yeah, that sounds right.  It looks pretty recursive, and the deeper you go the more accurate you get.  Of course, on computess, double's are only see accurate in the first place, so..

[d&q]

Infinity isn't a number, its a concept.

I've used this formula for Pi since 'round sixth grade:

[Quik]

If infinity isn't a number, is e? I recently had a conversation with my math teacher about "the number e" (Euler's number)