RosettaCodeData/Task/Arithmetic-geometric-mean/PowerShell/arithmetic-geometric-mean.psh

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function agm ([Double]$a, [Double]$g) {
[Double]$eps = 1E-15
[Double]$a1 = [Double]$g1 = 0
while([Math]::Abs($a - $g) -gt $eps) {
$a1, $g1 = $a, $g
$a = ($a1 + $g1)/2
$g = [Math]::Sqrt($a1*$g1)
}
[pscustomobject]@{
a = "$a"
g = "$g"
}
}
agm 1 (1/[Math]::Sqrt(2))