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Ingy döt Net 2023-07-01 11:58:00 -04:00
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commit cb5bb5e222
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Task/Nth-root/PL-I/nth-root.pli Normal file
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/* Finds the N-th root of the number A */
root: procedure (A, N) returns (float);
declare A float, N fixed binary;
declare (xi, xip1) float;
xi = 1; /* An initial guess */
do forever;
xip1 = ((n-1)*xi + A/xi**(n-1) ) / n;
if abs(xip1-xi) < 1e-5 then leave;
xi = xip1;
end;
return (xi);
end root;