% 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 25.1.9, p. III-328.
% Original source in file "macros5.TEX", starting line 668.
\wlog{L: "rangetst.tip" ["macros5.TEX," l. 668, p. III-328]}%
% This file DOES belong to format "texip."
\catcode`\@ = 11
\newif\if@InRange
\def\InRangeConditional #1#2#3{%
    TT\fi
    \@InRangetrue
    \ifnum #1<#2\relax
        \@InRangefalse
    \fi
    \ifnum #1>#3\relax
        \@InRangefalse
    \fi
    \if@InRange
}

\def\CheckRange #1#2#3#4{% 
    \ifnum #1 < #2\relax
        \errmessage{Value \number#1 \space out of range #2..#3: #4}%
    \fi
    \ifnum #1>#3\relax
        \errmessage{Value \number#1 \space out of range #2..#3: #4}%
    \fi
}
\def\CheckZeroOneRange #1#2{% 
    \CheckRange{#1}{0}{1}{#2}%
}
\catcode`\@ = 12