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