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Ingy döt Net 2023-07-01 11:58:00 -04:00
parent 7387c8f97b
commit cb5bb5e222
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Task/Arithmetic-geometric-mean-Calculate-Pi/Python/arithmetic-geometric-mean-calculate-pi.py Normal file
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from decimal import *
D = Decimal
getcontext().prec = 100
a = n = D(1)
g, z, half = 1 / D(2).sqrt(), D(0.25), D(0.5)
for i in range(18):
x = [(a + g) * half, (a * g).sqrt()]
var = x[0] - a
z -= var * var * n
n += n
a, g = x
print(a * a / z)