# CTAN update: xint

Date: March 13, 2016 10:29:16 PM CET

Jean-Fran?ois Burnol submitted an update to the
xint
package.
Version number: 1.2f 2016-03-12
License type: lppl1.3
Summary description: Expandable operations on long numbers
Announcement text:

Bug fixes - squaring macro \xintSqr from xintfrac.sty was broken due to a misspelled sub-macro name. Dates back to 1.1 release of 2014/10/28 :-((. - 1.2c's fix to the subtraction bug from 1.2 introduced another bug, which in some cases could create leading zeroes in the output, or even worse. This could invalidate other routines using subtractions, like \xintiiSquareRoot. Improvements and new features - functions binomial, pfactorial and factorial in both integer and float versions. - faster implementation and increased accuracy of float power macros. - faster implementation of both integral and float square root macros. - the float square root achieves _correct_ (aka _exact_) rounding in arbitrary precision. - modified behaviour for the \xintPFloat macro, used by \xintthefloatexpr to prettify its output. It now opts for decimal notation if and only if scientific notation would use an exponent between -5 and 5 inclusive. The zero value is printed 0. with a dot. - the documentation offers a more precise (and accurate) discussion of floating point issues. - various under-the-hood code improvements; the floatexpr operations are chained in a faster way, from skipping some unneeded parsing on results of earlier computations. The absence of a real inner data structure for floats (incorporating their precisions, for one) is however still a bit hair rising: currently the lengths of the mantissas of the operands are computed again by each float macro or expression operation. - renewed desperate efforts at improving the documentation by random shuffling of sections and well thought additions; cuts were considered and even performed. See CHANGES.{html,pdf} for more.

This package is located at http://mirror.ctan.org/macros/generic/xint More information is at http://www.ctan.org/pkg/xint We are supported by the TeX User Groups. Please join a users group; see http://www.tug.org/usergroups.html .

Thanks for the upload. For the CTAN Team Ina Dau

Bug fixes - squaring macro \xintSqr from xintfrac.sty was broken due to a misspelled sub-macro name. Dates back to 1.1 release of 2014/10/28 :-((. - 1.2c's fix to the subtraction bug from 1.2 introduced another bug, which in some cases could create leading zeroes in the output, or even worse. This could invalidate other routines using subtractions, like \xintiiSquareRoot. Improvements and new features - functions binomial, pfactorial and factorial in both integer and float versions. - faster implementation and increased accuracy of float power macros. - faster implementation of both integral and float square root macros. - the float square root achieves _correct_ (aka _exact_) rounding in arbitrary precision. - modified behaviour for the \xintPFloat macro, used by \xintthefloatexpr to prettify its output. It now opts for decimal notation if and only if scientific notation would use an exponent between -5 and 5 inclusive. The zero value is printed 0. with a dot. - the documentation offers a more precise (and accurate) discussion of floating point issues. - various under-the-hood code improvements; the floatexpr operations are chained in a faster way, from skipping some unneeded parsing on results of earlier computations. The absence of a real inner data structure for floats (incorporating their precisions, for one) is however still a bit hair rising: currently the lengths of the mantissas of the operands are computed again by each float macro or expression operation. - renewed desperate efforts at improving the documentation by random shuffling of sections and well thought additions; cuts were considered and even performed. See CHANGES.{html,pdf} for more.

This package is located at http://mirror.ctan.org/macros/generic/xint More information is at http://www.ctan.org/pkg/xint We are supported by the TeX User Groups. Please join a users group; see http://www.tug.org/usergroups.html .

Thanks for the upload. For the CTAN Team Ina Dau

## xint – Expandable operations on long numbers

The xint bundle main modules are:

- xinttools
- utilities of independent interest such as expandable and non-expandable loops,
- xintcore
- expandable macros implementing addition, subtraction, multiplication, division, and powers for arbitrarily long integers,
- xint
- extension of xintcore,
- xintfrac
- extends the scope of xint to decimal numbers, to numbers using scientific notation and also to (exact) fractions,
- xintexpr
- provides expandable parsers of numeric expressions using the standard infix notations, parentheses, built-in functions, user definable functions and variables (and more ...) which do either exact evaluations (also with fractions) or floating point evaluations under a user chosen precision.

Further modules of the bundle are: *xintkernel* (support macros for all the bundle constituents),
*xintbinhex* (conversion to and from hexadecimal and binary bases),
*xintgcd* (provides `gcd()`

and `lcm()`

functions to xintexpr),
*xintseries* (evaluates numerically partial sums of series and power series with fractional coefficients),
and *xintcfrac* (dedicated to the computation and display of continued fractions).

All computations are compatible with expansion-only context.

The packages may be used with Plain TeX, LaTeX, or (a priori) any other macro format built upon TeX.

Package | xint |

Version | 1.2p 2017-12-05 |

Maintainer |
Jean-François Burnol |