Arithmetic-geometric mean/Calculate Pi: Difference between revisions
Arithmetic-geometric mean/Calculate Pi (view source)
Revision as of 08:25, 5 July 2023
, 11 months agono edit summary
m (Delphy → Delphi) |
No edit summary |
||
Line 646:
Iteration: 4 Diff: 3.05653257536554156111405386493810661E-0010 Pi: 3.14159265358979323846636060270664556
Iteration: 5 Diff: 3.71721942712928151094186846648146566E-0021 Pi: 3.14159265358979323846264338327951628
</pre>
=={{header|FutureBasic}}==
<syntaxhighlight lang="futurebasic">
double a, c, g, t, p
double apprpi
short i
// Initial values
a = 1
g = sqr(0.5)
p = 1
t = 0.25
//Iterate just 3 times
for i = 1 to 3
c = a
a = ( a + g ) / 2
g = sqr( c * g )
c -= a
t -= ( p * c^2 )
p *= 2
apprpi = (( a + g )^2) / ( t * 4 )
print "Iteration "i": ", apprpi
next
print "Actual value:",pi
handleevents
</syntaxhighlight>
{{output}}
<pre>
Iteration 1: 3.140579250522169
Iteration 2: 3.141592646213543
Iteration 3: 3.141592653589794
Actual value: 3.141592653589793
</pre>
| |||