Jean-François Burnol submitted an update to the
xint
package.
Summary description: Expandable operations on long numbers
License type: lppl
Announcement text:
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version 1.04 of xint (2013/04/25)
This release has some bug fixes, important improvements in the
xintseries package and its documentation, and a new component
xintcfrac.sty devoted to continued fractions.
1. bug fixes: \xintIrr {0} was a bad one. Apart from that,
there were some inaccuracies in the documentation.
2. the base package xint has new commands to help deal in an
expandable way with token lists produced by some of the bundle
macros. Also, the division routine is a bit faster, and a
rounding macro has been added to the xintfrac package.
3. xintseries: a new implementation of \xintPowerSeries, based
on a Horner scheme, has greatly reduced a problem of denominator
build-up. Also, the package has new macros, among them
\xintRationalSeries is for computing partial sums with general
term F(n) where F is a rational function and the macro is given
the n->F(n)/F(n-1) function. This is especially designed for
series of the exponential type, again to avoid a denominator
build-up which made \xintSeries and \xintPowerSeries inefficient
in such situations. The documentation has been correspondingly
extended.
4. xintcfrac: this is a new package to deal with matters of
continued fractions. For example \xintCFrac is like amsmath
\cfrac apart from a little detail: it first computes the
continued fraction corresponding to a given fractional number!
(and then feeds \cfrac with it; almost all package macros only
deal with computations, not typesetting). The package includes
commodities to specify the coefficients of the (possibly
generalized) continued fraction as function of the index, to
compute simple and centered continued fractions, to return the
list of all convergents, etc...
The xint.dtx source file self-extracts packages xint.sty,
xintgcd.sty, xintfrac.sty, xintseries.sty and xintcfrac.sty (as
well as xint.ins).
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Thanks for the upload.
For the CTAN Team
Rainer Schöpf