feat: 9.5.9

csug/math/Makefile

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+include mathfiles
+
+density=-r90x90
+
+.SUFFIXES:
+.SUFFIXES: .tex .gif
+
+# translate ps file to ppm, crop to minimum background, and translate ppm
+# to gif with white (background) transparent
+#
+.tex.gif:
+	echo | latex $* &&\
+          dvips -f < $*.dvi |\
+          gs -q -dNOPAUSE -dSAFER -sDEVICE=ppmraw -sOutputFile=-\
+          ${density} - |\
+          pnmcrop |\
+          ppmtogif -transparent white > $*.gif
+	rm -f $*.dvi $*.log $*.aux
+	test -f $*.gif && chmod 644 $*.gif
+
+all: ${gifs}
+
+${gifs}: mathmacros
+
+clean: ; rm -f *.gif Make.out

csug/math/mathmacros

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+\catcode`@=11 % borrow the private macros of PLAIN (with care)
+\def\W#1{W_{\!\!#1}}
+\def\fftcases#1{\left\{\,\vcenter{\m@th\baselineskip=18pt
+  \ialign{$##\hfil$&\quad##\hfil\crcr#1\crcr}}\right.}
+\input epsf
+
+\setlength\fboxrule{.4\p@}
+\newlength{\chpicsize}
+\setlength{\chpicsize}{30pc}
+\addtolength{\chpicsize}{-\fboxrule}
+\addtolength{\chpicsize}{-\fboxrule}
+\def\chpic#1{\begingroup%
+  \def\epsfsize##1##2{##1}
+  \fboxsep=0pt
+  \vbox{\noindent%
+    \fbox{\vbox{\hbox to \chpicsize{\hfil\vbox to \chpicsize{\vfil%
+      \epsfbox{#1}\vfil}\hfil}}}}\endgroup}