% This macro source file is from the four volume series % "TeX in Practice" by Stephan von Bechtolsheim, published % 1993 by Springer-Verlag, New York. % Copyright 1993 Stephan von Bechtolsheim. % No warranty or liability is assumed. % This macro may be copied freely if no fees other than % media cost or shipping charges are charged and as long % as this copyright and the following source code itself % is not changed. Please see the series for further information. % % Version: 1.0 % Date: May 1, 1993 % % % This source code is documented in 26.5, p. III-365. % Original source in file "macros6.TEX", starting line 362. \wlog{L: "legyear.tip" ["macros6.TEX," l. 362, p. III-365]}% % This file DOES belong to format "texip." \InputD{earliest.tip} \def\CheckLegalYear #1{% \ifnum #1 < \EarliestYearDate \errmessage{\string\CheckLegalYear: year #1 < \the\EarliestYearDate\space encountered, illegal.}% \fi }