Arithmetic-geometric mean/Calculate Pi: Difference between revisions

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m (→‎{{header|Pascal}}: little addition)
Line 1,132:
tn := 0.25;
while n < Digits do begin
a0 := an;
b0 := bn;
an := (a0 + b0)/2;
bn := Sqrt(a0 * b0);
tn := tn - Sqr(an - a0) * n;
n := n + n;
end;
Result := Sqr(an + bn)/(tn * 4);
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