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Diffstat (limited to 'Master/texmf-dist/doc/generic/xint/README')
| -rw-r--r-- | Master/texmf-dist/doc/generic/xint/README | 31 |
1 files changed, 29 insertions, 2 deletions
diff --git a/Master/texmf-dist/doc/generic/xint/README b/Master/texmf-dist/doc/generic/xint/README index 3aff524f028..81b28347704 100644 --- a/Master/texmf-dist/doc/generic/xint/README +++ b/Master/texmf-dist/doc/generic/xint/README @@ -1,4 +1,4 @@ - Source: xint.dtx v1.1c 2015/09/12 (doc 2015/09/17) + Source: xint.dtx v1.2 2015/10/10 (doc 2015/10/10) Author: Jean-Francois Burnol Info: Expandable operations on big integers, decimals, fractions License: LPPL 1.3c @@ -12,6 +12,33 @@ as sourcexint.pdf. +AIM + + +The basic aim is provide _expandable_ computations on big integers, and +also big fractions. For example + + \xinttheexpr reduce(37189719/183618963+11390170/17310720)^17\relax + +will evaluate exactly the fraction (the result has 462 characters +including the fraction slash). One can also work with dummy variables. +For example + + \xinttheexpr mul(add(x(x+1)(x+2), x=y..y+15), y=171286,98762,9296)\relax + +evaluates to 15979066346135829902328007959448563667099190784. + +It is possible to use the package with Plain as well as with LaTeX. + +Sub-units xintcore, xint and xintfrac provide the underlying macros, and +xintexpr loads all of them and provides expandable parsers allowing +computations such as the above (and more). A more light-weight package +bnumexpr (LaTeX only) loads only xintcore and provides a parser which +handles only big integers, the four operations, the power operation and +the factorial (v1.2). + + + USAGE @@ -42,7 +69,7 @@ their standard catcodes. xintcore.sty and xinttools.sty both import xintkernel.sty which has the catcode handler and package identifier and defines a few utilities such -as \oodef or \xint_dothis/\xint_orthat. +as \oodef, \fdef, or \xint_dothis/\xint_orthat. |