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