CTAN update: xint
CTAN Announcements
ctan-ann at ctan.org
Sun Jan 8 10:19:17 CET 2017
Jean-François Burnol submitted an update to the
xint
package.
Version number: 1.2k 2017-01-06
License type: lppl1.3
Summary description: Expandable operations on long numbers
Announcement text:
----------------------------------------------------------------------
- The xintfrac.sty floating point macros since 1.2f round their
arguments to the target precision P before further processing.
This rounding is now exact (aka correct) in all cases, even with
fractions having long numerators and denominators.
This change has little influence on float expressions, as the
\xintfloatexpr parser handles there the / symbol as an operator
hence it does not (except for special constructs) get to see
fractions as such.
- Half-integer powers A^x (only available in float expressions,
not via macros) proceed by an integer power and then a
square-root extraction: the 1.2f implementation did the latter
on an already rounded value, 1.2k keeps some of the guard digits
to make the computed value Z closer to the exact one: a
difference of less than 0.52 ulp(Z) is guaranteed in all cases.
- Macro \xintnewdummy is made a public one, it serves to declare
additional letters as dummy variables in expressions. This is
for Unicode engines, mainly, as all Latin letters are already
predefined to act as such.
See CHANGES.pdf or CHANGES.html for the details and more.
----------------------------------------------------------------------
This package is located at
http://mirror.ctan.org/macros/generic/xint
More information is at
http://www.ctan.org/pkg/xint
------------------------------------------------------------------------
Thanks for the upload.
For the CTAN Team
Manfred Lotz
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