CTAN
Comprehensive TeX Archive Network

CTAN up­date: xint

Date: Jan­uary 8, 2017 10:19:17 AM CET
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 We are sup­ported by the TeX user groups. Please join a users group; see http://www.tug.org/user­groups.html .

xint – Ex­pand­able op­er­a­tions on long num­bers

The bun­dle pro­vides nine pack­ages:

  • xint­core, which pro­vides ex­pand­able macros that im­ple­ment the ba­sic arith­metic op­er­a­tions of ad­di­tion, sub­trac­tion, mul­ti­pli­ca­tion and di­vi­sion, as ap­plied to ar­bi­trar­ily long num­bers rep­re­sented as chains of dig­its with an op­tional mi­nus sign;
  • xint, which ex­tends xint­core with more big in­te­ger op­er­a­tions;
  • xint­tools, which pro­vides util­i­ties of in­de­pen­dent in­ter­est such as ex­pand­able and non-ex­pand­able loops;
  • xint­frac, which com­putes frac­tions us­ing xint;
  • xin­t­expr, which ex­tends xint­frac with an ex­pand­able parser of comma sep­a­rated ex­pres­sions in­volv­ing in­te­gers, frac­tions, boolean, and al­ge­braic op­er­a­tors, and de­clared as well as dummy vari­ables;
  • xint­bin­hex pro­vides con­ver­sions to and from bi­nary and hex­adec­i­mal bases;
  • xintseries, which pro­vides ba­sic func­tion­al­ity for com­put­ing par­tial sums us­ing xint;
  • xint­gcd, which pro­vides im­ple­men­ta­tions of the Eu­clidean al­go­rithm, and of its type­set­ting;
  • xintcfrac, which deals with the com­pu­ta­tion of con­tin­ued frac­tions.

All of the pack­ages’ com­pu­ta­tions are done in a way that they can op­er­ate in an ex­pand­ing en­vi­ron­ment.

The pack­ages may be used ei­ther with Plain or .

Pack­agexint
Ver­sion1.2k 2017-01-06
Main­tainerJean-François Burnol

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