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Pi: Difference between revisions
m
→version 1: changed some comments.
(Added solutions for Delphi and EDSAC.) |
m (→version 1: changed some comments.) |
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spit= 0 /*the index of the spitted pi dec. digs*/
pi=0; v=5; vv=v*v; g=239; gg=g*g; s= 16 /*assign some values to some variables.*/
r=
do n=1 by 2 until old=pi; old= pi /*just calculate pi with odd integers*/
pi= pi + s / (n*v) - r / (n*g) /* ··· using John Machin's formula.*/
s= -s; r= -r; v= v * vv; g= g * gg /*compute some variables for shortcuts.*/
if n>3 then spit= spit + 1
if spit<4 then iterate /*Not enough digs yet? Then don't show*/
$= substr(pi, spit-3, 1) /*lag behind the true pi calculation. */
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end
say /*stick a fork in it, we're all done. */
exit: say; say n%2+1 'iterations took' format(time("Elapsed"),,2) 'seconds.'; exit
halt: say; say 'PI_SPIT halted via use of Ctrl─Break.'; signal exit /*show iterations.*/</lang>
{{out|output|text= [until the
<br>(Shown at four-fifth size.)
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