RosettaCodeData/Task/Nth-root/Seed7/nth-root.seed7

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2023-07-01 11:58:00 -04:00
const func float: nthRoot (in integer: n, in float: a) is func
result
var float: x1 is 0.0;
local
var float: x0 is 0.0;
begin
x0 := a;
x1 := a / flt(n);
while abs(x1 - x0) >= abs(x0 * 1.0E-9) do
x0 := x1;
x1 := (flt(pred(n)) * x0 + a / x0 ** pred(n)) / flt(n);
end while;
end func;