1 #include <stdio.h>
2 #include <stdlib.h>
3 #include <string.h>
4 
5 #undef sqrt
6 #define sqrt p9_sqrt
7 #define YYSTYPE int  /* DEC v. GNU garbage */
8 
9 enum charclass {
10 	OTHER, OLET, ILET, DIG, LPAR, RPAR, SLASH, PLUS, ILETF, ILETJ, VBAR,
11 	NONE, LAST
12 };
13 extern int class[LAST][LAST];
14 
15 #define	dprintf		if (dbg) printf
16 #define	max(x,y)	(((x) >= (y)) ? (x) : (y))	/* beware of side effects */
17 #define	min(x,y)	(((x) <= (y)) ? (x) : (y))
18 
19 extern	char	errbuf[200];
20 extern	char	*cmdname;
21 #define	ERROR	sprintf(errbuf,
22 #define	FATAL	), error(1, errbuf)
23 #define	WARNING	), error(0, errbuf)
24 #define	SYNTAX	), yyerror(errbuf)
25 
26 #define	ROM	'1'
27 #define	ITAL	'2'
28 #define	BLD	'3'
29 #define	BDIT	'4'
30 
31 #define	DEFGAP	-999	/* default gap in piles */
32 
33 extern int	dbg;
34 extern int	ct;
35 extern int	lp[];
36 extern int	used[];		/* available registers */
37 extern int	ps;		/* dflt init pt size */
38 extern int	deltaps;	/* default change in ps */
39 extern int	dps_set;	/* 1 => -p option used */
40 extern int	gsize;		/* global size */
41 extern int	ft;		/* default font */
42 extern int	display;	/* 1 => inline, 0 => .EQ/.EN */
43 extern int	synerr;		/* 1 if syntax error in this eqn */
44 
45 extern char	*typesetter;	/* typesetter name for -T... */
46 extern int	minsize;	/* min size it can print */
47 extern int	ttype;		/* actual type of typesetter: */
48 
49 #define	DEVCAT	1
50 #define	DEV202	2
51 #define	DEVAPS	3
52 #define	DEVPOST	4
53 
54 extern double	eht[];
55 extern double	ebase[];
56 extern int	lfont[];
57 extern int	rfont[];
58 extern int	lclass[];
59 extern int	rclass[];
60 extern YYSTYPE	yyval;   /* DEC cc wants long */
61 extern YYSTYPE  yylval;   /* DEC cc wants long */
62 extern int	eqnreg;
63 extern double	eqnht;
64 extern int	lefteq, righteq;
65 extern int	markline;	/* 1 if this EQ/EN contains mark or lineup */
66 
67 #define	TBLSIZE	100
68 
69 typedef struct s_tbl {
70 	char	*name;		/* e.g., "max" or "sum" */
71 	char	*cval;		/* e.g., "\\f1max\\fP" */
72 	int	ival;		/*    or SUM */
73 	struct s_tbl *next;
74 } tbl;
75 
76 extern	char	*spaceval;	/* use in place of normal \x (for pic) */
77 
78 #define	String	01
79 #define	Macro	02
80 #define	File	04
81 #define	Char	010
82 #define	Free	040
83 
84 typedef struct infile {
85 	FILE	*fin;
86 	char	*fname;
87 	int	lineno;
88 } Infile;
89 
90 typedef struct {	/* input source */
91 	int	type;	/* Macro, String, File */
92 	char	*sp;	/* if String or Macro */
93 } Src;
94 
95 extern	Src	src[], *srcp;	/* input source stack */
96 
97 #define	MAXARGS	20
98 typedef struct {	/* argument stack */
99 	char	*argstk[MAXARGS];	/* pointers to args */
100 	char	*argval;	/* points to space containing args */
101 } Arg;
102 
103 typedef struct {	/* font number and name */
104 	int	ft;
105 	char	name[10];
106 } Font;
107 
108 extern	Font	ftstack[];
109 extern	Font	*ftp;
110 
111 extern	int	szstack[];
112 extern	int	nszstack;
113 
114 extern	Infile	infile[10];
115 extern	Infile	*curfile;
116 
117 extern	tbl	*lookup(tbl **tblp, char *name);
118 extern	void	install(tbl **tblp, char *name, char *cval, int ival);
119 extern	tbl	*keytbl[], *deftbl[], *restbl[], *ftunetbl[];
120 
121 extern	int	salloc(void);
122 extern	void	sfree(int);
123 extern	void	nrwid(int, int, int);
124 extern	char	*ABSPS(int);
125 extern	char	*DPS(int, int);
126 extern	int	EFFPS(int);
127 extern	double	EM(double, int);
128 extern	double	REL(double, int);
129 extern	char	*pad(int);
130 extern	void	getstr(char *, int);
131 extern	char	*strsave(char *);
132 
133 extern	int	input(void);
134 extern	int	unput(int);
135 extern	void	pbstr(char *);
136 extern	void	error(int, char *);
137 extern	void	yyerror(char *);
138 
139 extern	void	diacrit(int, int);
140 extern	void	eqnbox(int, int, int);
141 extern	void	setfont(char *);
142 extern	void	font(int, int);
143 extern	void	globfont(void);
144 extern	void	fatbox(int);
145 extern	void	fromto(int, int, int);
146 extern	void	funny(int);
147 extern	void	integral(int, int, int);
148 extern	void	setintegral(void);
149 extern	void	pushsrc(int, char *);
150 extern	void	popsrc(void);
151 extern	void	putout(int);
152 extern	void	text(int, char *);
153 extern void subsup(int, int, int);
154 extern void bshiftb(int, int, int);
155 extern void shift2(int, int, int);
156 extern void setsize(char *);
157 extern void size(int, int);
158 extern void globsize(void);
159 extern void sqrt(int);
160 extern void text(int, char *);
161 extern void boverb(int, int);
162 extern void lineup(int);
163 extern void mark(int);
164 extern void paren(int, int, int);
165 extern void move(int, int, int);
166 extern void pile(int);
167 extern int startcol(int);
168 extern void column(int, int);
169 extern void matrix(int);