% 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 3.4.2, p. I-71.
% Original source in file "reg1.TEX", starting line 2216.
\wlog{L: "counters.tip" ["reg1.TEX," l. 2216, p. I-71]}%
% This file DOES belong to format "texip."
\InputD{newoutfr.tip}
\InputD{printco.tip}
\InputD{namedef.tip}
\catcode`\@ = 11
\def\NewCounter #1#2#3#4{%
    \wlog{\string\NewCounter: allocating new counter "#1."}%
    \if\NameDefinedConditional{@C-#1}%
        \errmessage{\string\NewCounter: counter "#1" was
            allocated previously.}% 
    \fi
    \expandafter\newcountOF\csname @C-#1\endcsname
    \ReassignCounter{#1}{#2}{#3}{#4}%
    \NameDef{@ResetC-#1}{}% 
}
\def\ReassignCounter #1#2#3#4{%
    \if\NameDefinedConditional{@C-#1}%
    \else
        \errmessage{\string\ReassignCounter: counter "#1"
            not defined before.}% 
    \fi
    \NameDef{@TheC-#1}{% 
        \expandafter\expandafter\expandafter#2% 
        \expandafter{\csname @C-#1\endcsname}% 
    }% 
    \NameDef{@TheArabicC-#1}{% 
        \expandafter\the\csname @C-#1\endcsname 
    }% 
    \NameDef{@PriC-#1}{#3}% 
    \NameDef{@RefC-#1}{#4}%
}
\def\TheCounter #1{% 
    \NameUse{@TheC-#1}% 
}
\def\TheArabicCounter #1{% 
    \NameUse{@TheArabicC-#1}% 
}
\def\PrintCounter #1{% 
    \NameUse{@PriC-#1}% 
}
\def\RefCounter #1{% 
    \NameUse{@RefC-#1}% 
}
\let\RefCounterTwo = \RefCounter
\def\CounterToRegister #1#2{%
    #1 = \csname @C-#2\endcsname\relax
}
\def\AddCounterToResetList #1#2{% 
    {% 
        \def\@ResetCounter{\noexpand\@ResetCounter}% 
        \expandafter\xdef\csname @ResetC-#2\endcsname{% 
            \csname @ResetC-#2\endcsname\@ResetCounter{#1}% 
        }% 
    }% 
}
\def\StepCounter #1{% 
    \global\expandafter\advance\csname @C-#1\endcsname by 1
    \NameUse{@ResetC-#1}% 
}
\def\SetCounter #1#2{% 
    \global\expandafter\csname @C-#1\endcsname = #2\relax
}
\def\AssignCounterToReg #1#2{%
    #2 = \expandafter\csname @C-#1\endcsname
    \relax
}
\def\@ResetCounter #1{% 
    \global\csname @C-#1\endcsname = 0
}
\catcode`\@ = 12