The inaccuracy appears to be the result of roundoff error; use bigint; or use Math::BigInt ':constant'; (as suggested by tachyon and bageler) fixes that also.

Also, my algorithm is streaming in Gibbons' sense. It represents the continued fraction as a composition of linear fractional transformations.

In reply to Re: Good to about 45 places; spigot algorithm by jdalbec
in thread e with continued fractions by jdalbec

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