Beefy Boxes and Bandwidth Generously Provided by pair Networks
good chemistry is complicated,
and a little bit messy -LW

Simple Pi calculator

by arhuman (Vicar)
on Mar 09, 2001 at 13:51 UTC ( #63215=note: print w/ replies, xml ) Need Help??

in reply to Calculating Pi

Sorry but I couldn't resist.

#!/usr/bin/perl $|=1;$N=shift||100;$M=int(3.3*$N) ;$t[0]=2;$s[0]=2;sub z{$a=$r=00}; for( $k=1 ;$k<$M ;$k++){$a=$r=0; };for( $k=01; $k<$M;$k++){&z; for($i =$N;$i >=0;$i--){$a=$t [$i]*( $k)+$r ;$t[$i]=int($a% 10);${ r}=int ($a/10);}$K=($k <<1)+1 ;&{z}; map{$a=$t[$_]+( 10)*(( $r));; ${t}[$_]=int($a /($K)) ;${r}= int(($a)%($K))} (0..$N );if(( $r>=(int(($K)/2 )))){; ;;${t} [$N]++}while($t [$N]>9 ){${t} [$N]-=10;;$t[$N -1]++} &z(); for($i=$N;$i>=0 ;$i--){ $a= ($t[$i]+$s[$i]+ $r);${s} [$i]=int($a%10);$r=int($a/10)}if( $k>$x+3){${x}=$k;;print"$s[$y++]" ;};}for($y..${N}){print"$s[$_]";}
You can pass the desired number of digits as parameter on the commandline.

Of course the method used was choosed more for its simplicity than for its speed.
(But this code could be optimized several ways, by adding 'use integer;' for example...)

For REAL program you should use Math::GMP or Math::Float and real formulae

Any search on the net would give you a lot of start point, you might try this one.

"Trying to be a SMART lamer" (thanx to Merlyn ;-)

Comment on Simple Pi calculator
Download Code
Replies are listed 'Best First'.
Re: Simple Pi calculator
by Anonymous Monk on Jan 26, 2005 at 02:15 UTC
    you nead an acule pi calkulater

Log In?

What's my password?
Create A New User
Node Status?
node history
Node Type: note [id://63215]
and the web crawler heard nothing...

How do I use this? | Other CB clients
Other Users?
Others drinking their drinks and smoking their pipes about the Monastery: (4)
As of 2015-11-28 02:53 GMT
Find Nodes?
    Voting Booth?

    What would be the most significant thing to happen if a rope (or wire) tied the Earth and the Moon together?

    Results (737 votes), past polls