CTAN update: xint
List selectors [L][n], [L][a:b], in expressions are faster. And items are counted starting at zero, not one ([L][a:b] already followed exactly Python slicing rules). The iter keyword's meaning has changed, new one associated with rseq, former one which is associated to rrseq renamed to iterr. The float operations with large precision handle small inputs faster. The documentation has an example of using iter to implement expandably the Brent-Salamin algorithm for digits of Pi. See CHANGES.{pdf,html} 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 arbitrary precision floating point and integer operations
Loading xintexpr provides \xinteval and \xintfloateval.
\xintfloateval evaluates numerical expressions. The floating point precision defaults to 16 decimal digits and can be set by user. Trigonometry, exponential and logarithms are implemented up to a maximal precision of 62 decimal digits.
\xinteval computes exactly with integers, fractions, and decimal numbers or numbers in scientific notation. Note though that multiplying two floating point numbers will about double the number of digits, and so on, because the algebra is done exactly.
Both are compatible with expansion-only context.
Loading xintexpr imports automatically various other modules that it depends upon. Among them:
- xinttools: utilities such as expandable and non-expandable loops,
- xint: macros implementing in particular the basic operations on arbitrarily long integers,
- xintbinhex: conversions between decimal and binary, octal, or hexadecimal bases for arbitrarily long integers,
- xintfrac: macros implementing in particular the basic operations on arbitrarily large fractions, decimal numbers, or numbers in scientific notation.
Further modules of independent interest include xintgcd, xintseries and xintcfrac.
You can use xintexpr (and the other components) with LaTeX (via \usepackage) or also with Plain TeX, OpTeX, or ConTeXt (via \input xintexpr.sty).
All the components are documented in the file xint.pdf, which also contains the commented source code.
| Package | xint |
| Version | 1.4o 2025-09-06 |
| Copyright | 2013–2022, 2025 Jean-François Burnol |
| Maintainer | Jean-François Burnol |