% pdcimth.tex 1.1.2 91/12/12 -- make maths use text italic family for letters
%  Very few RL families have separate maths and text italic fonts.

%  count0 -- mathcode for current u.c. char
%  count1 -- mathcode for current l.c. char
%  count2 -- ASCII code of current u.c. char
%  count3 -- ASCII code of current l.c. char
%  count4 -- number of character left to redefine

\begingroup  %  preserve values of count registers

    \count0=\itfam \multiply\count0 256 \advance\count0"7000 \count1=\count0
    \advance\count0+`A \advance\count1+`a
    \count2=`A \count3=`a
    \count4=26

    \loop
    \ifnum\count4>0
	\advance\count4-1
	\global\mathcode\count2=\count0 \global\mathcode\count3=\count1
	\advance\count0+1 \advance\count1+1
	\advance\count2+1 \advance\count3+1
    \repeat

\endgroup