Solved

Help with 2 functions

Posted on 2002-06-04
8
143 Views
Last Modified: 2010-04-04

I need a function that can calculate decimal number n of pi. (for example n=1 gives 1 n=2 gives 4 ... (pi=3.1415....)


Can someone help me out?




0
Comment
Question by:hulken
8 Comments
 
LVL 12

Expert Comment

by:Lee_Nover
ID: 7053472
a very simple thing would be :

procedure TForm1.Button3Click(Sender: TObject);
var tmpStr: string;
begin
     tmpStr:=Format('%.16f', [Pi]);
     Delete(tmpStr, 1, 2);
     Caption:=tmpStr;
     Edit2.Text:=tmpStr[StrToIntDef(Edit1.Text, 1)];
end;


where Edit1.Text holds the decimal wich we want

:)
0
 
LVL 12

Expert Comment

by:Lee_Nover
ID: 7053556
btw .. whats the second function ? :)))
0
 
LVL 11

Expert Comment

by:robert_marquardt
ID: 7053607
I have a simple C program at home which gives 4 digits of Pi on each iteration. I will have a look if it still exists.
0
Live: Real-Time Solutions, Start Here

Receive instant 1:1 support from technology experts, using our real-time conversation and whiteboard interface. Your first 5 minutes are always free.

 

Author Comment

by:hulken
ID: 7053660
Sorry  I think I was not clear here.

About the "Two functions" I changed my mind so I just need one... forgot to change the subject.

About your Answer Lee.

This does not calculate pi. Try to calculate the decimal number 1000 :-) with your example.

I need a mor correct solution that should be general.

Ii migt be possible to use some of the formulas number
76-8 on
http://mathworld.wolfram.com/PiFormulas.html


0
 
LVL 12

Expert Comment

by:Lee_Nover
ID: 7053699
aaahhh ok :)
0
 
LVL 45

Accepted Solution

by:
aikimark earned 200 total points
ID: 7053737
0
 
LVL 12

Expert Comment

by:Lee_Nover
ID: 7059435
uhhh too late
and I just spent the whole night translating and optimizing some code I barely understood :)
ah well .. :)
0
 

Author Comment

by:hulken
ID: 7059815
Lee Nover.  I love things like this so if you share the code with me I will add some points for you.

One thing that I think would be nice is if it is possible to somhow save the current run (to a file) to be able to start over without restarting from the beginning.

Another nice thing that I don't know how to do is to take time of the current run so I know which method that is the fastgest.
0

Featured Post

Gigs: Get Your Project Delivered by an Expert

Select from freelancers specializing in everything from database administration to programming, who have proven themselves as experts in their field. Hire the best, collaborate easily, pay securely and get projects done right.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

This article explains how to create forms/units independent of other forms/units object names in a delphi project. Have you ever created a form for user input in a Delphi project and then had the need to have that same form in a other Delphi proj…
Have you ever had your Delphi form/application just hanging while waiting for data to load? This is the article to read if you want to learn some things about adding threads for data loading in the background. First, I'll setup a general applica…
Migrating to Microsoft Office 365 is becoming increasingly popular for organizations both large and small. If you have made the leap to Microsoft’s cloud platform, you know that you will need to create a corporate email signature for your Office 365…
Sending a Secure fax is easy with eFax Corporate (http://www.enterprise.efax.com). First, just open a new email message. In the To field, type your recipient's fax number @efaxsend.com. You can even send a secure international fax — just include t…

813 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question

Need Help in Real-Time?

Connect with top rated Experts

11 Experts available now in Live!

Get 1:1 Help Now