This is pdfTeX, Version 3.1415926-2.4-1.40.13 (TeX Live 2012)
 restricted \write18 enabled.
entering extended mode
(./x.tex (./xintexpr.sty (./xintfrac.sty (./xint.sty (./xinttools.sty))))
! Undefined control sequence.
\XINT_expr_scanfunc_panic ...rror:bigtroubleahead
                                                  (0\relax
\Test ... in decimal: \xinttheiexpr [30]\a \relax
                                                  .\endgraf This is (#1+1)/6...
l.38 \Test {0}

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