1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
|
/* Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */
/* All Rights Reserved */
/*
* Copyright (c) 1980 Regents of the University of California.
* All rights reserved. The Berkeley software License Agreement
* specifies the terms and conditions for redistribution.
*/
/*
* Copyright (c) 1983, 1984 1985, 1986, 1987, 1988, Sun Microsystems, Inc.
* All Rights Reserved.
*/
/* from OpenSolaris "shift.c 1.4 05/06/02 SMI" SVr4.0 1.1 */
/*
* Portions Copyright (c) 2005 Gunnar Ritter, Freiburg i. Br., Germany
*
* Sccsid @(#)shift.c 1.6 (gritter) 1/13/08
*/
/*
* Changes Copyright (c) 2014 Carsten Kunze (carsten.kunze at arcor.de)
*/
#include "e.h"
#include "y.tab.h"
extern YYSTYPE yyval;
void
bshiftb(int p1, int dir, int p2) {
#ifndef NEQN
float shval, d1, h1, b1, h2, b2;
float diffps, effps, effps2;
const char *sh1, *sh2;
#else /* NEQN */
int shval, d1, h1, b1, h2, b2;
#endif /* NEQN */
yyval.token = p1;
h1 = eht[p1];
b1 = ebase[p1];
h2 = eht[p2];
b2 = ebase[p2];
#ifndef NEQN
effps = EFFPS(ps);
effps2 = EFFPS(ps+deltaps);
diffps = deltaps;
sh1 = sh2 = "";
#endif /* NEQN */
if( dir == SUB ) { /* subscript */
#ifndef NEQN
/* top 1/2m above bottom of main box */
d1 = VERT(EM(0.5, effps2));
#else /* NEQN */
d1 = VERT(1);
#endif /* NEQN */
shval = - d1 + h2 - b2;
if( d1+b1 > h2 ) /* move little sub down */
shval = b1-b2;
ebase[yyval.token] = b1 + max(0, h2-b1-d1);
eht[yyval.token] = h1 + max(0, h2-b1-d1);
#ifndef NEQN
if (ital(rfont[p1]) && rom(lfont[p2]))
sh1 = "\\|";
if (ital(rfont[p2]))
sh2 = "\\|";
#endif /* NEQN */
} else { /* superscript */
#ifndef NEQN
/* 4/10 up main box */
d1 = VERT(EM(0.2, effps));
#else /* NEQN */
d1 = VERT(1);
#endif /* NEQN */
ebase[yyval.token] = b1;
#ifndef NEQN
shval = -VERT( (4 * (h1-b1)) / 10 ) - b2;
if( VERT(4*(h1-b1)/10) + h2 < h1-b1 ) /* raise little super */
#else /* NEQN */
shval = -VERT(1) - b2;
if( VERT(1) + h2 < h1-b1 ) /* raise little super */
#endif /* NEQN */
shval = -(h1-b1) + h2-b2 - d1;
#ifndef NEQN
eht[yyval.token] = h1 + max(0, h2-VERT((6*(h1-b1))/10));
if (ital(rfont[p1]))
sh1 = "\\|";
if (ital(rfont[p2]))
sh2 = "\\|";
#else /* NEQN */
eht[yyval.token] = h1 + max(0, h2 - VERT(1));
#endif /* NEQN */
}
#ifndef NEQN
if(dbg)printf(".\tb:b shift b: S%d <- S%d vert %g S%d vert %g; b=%g, h=%g\n",
yyval.token, p1, shval, p2, -shval, ebase[yyval.token], eht[yyval.token]);
printf(".as %d \\v'%gp'\\s-%s%s\\*(%d\\s+%s%s\\v'%gp'\n",
yyval.token, shval, tsize(diffps), sh1, p2, tsize(diffps), sh2, -shval);
ps += deltaps;
if (ital(rfont[p2]))
rfont[p1] = 0;
else
rfont[p1] = rfont[p2];
#else /* NEQN */
if(dbg)printf(".\tb:b shift b: S%d <- S%d vert %d S%d vert %d; b=%d, h=%d\n",
yyval.token, p1, shval, p2, -shval, ebase[yyval.token], eht[yyval.token]);
printf(".as %d \\v'%du'\\*(%d\\v'%du'\n",
yyval.token, shval, p2, -shval);
#endif /* NEQN */
ofree(p2);
}
void
shift(int p1) {
ps -= deltaps;
yyval.token = p1;
if(dbg)printf(".\tshift: %d;ps=%g\n", yyval.token, ps);
}
void
shift2(int p1, int p2, int p3) {
int effps, treg;
#ifndef NEQN
float h1, h2, h3, b1, b2, b3, subsh, d1, d2, supsh;
int effps2;
#else /* NEQN */
int h1, h2, h3, b1, b2, b3, subsh, d1, d2, supsh;
#endif /* NEQN */
treg = oalloc();
yyval.token = p1;
if(dbg)printf(".\tshift2 s%d <- %d %d %d\n", yyval.token, p1, p2, p3);
effps = EFFPS(ps+deltaps);
#ifndef NEQN
eht[p3] = h3 = VERT( (eht[p3] * effps) / EFFPS(ps) );
ps += deltaps;
effps2 = EFFPS(ps+deltaps);
#endif /* NEQN */
h1 = eht[p1]; b1 = ebase[p1];
h2 = eht[p2]; b2 = ebase[p2];
#ifndef NEQN
b3 = ebase[p3];
d1 = VERT(EM(0.5, effps2));
#else /* NEQN */
h3 = eht[p3]; b3 = ebase[p3];
d1 = VERT(1);
#endif /* NEQN */
subsh = -d1+h2-b2;
if( d1+b1 > h2 ) /* move little sub down */
subsh = b1-b2;
#ifndef NEQN
supsh = -VERT( (4*(h1-b1))/10 ) - b3;
d2 = VERT(EM(0.2, effps));
if( VERT(4*(h1-b1)/10)+h3 < h1-b1 )
#else /* NEQN */
supsh = - VERT(1) - b3;
d2 = VERT(1);
if( VERT(1)+h3 < h1-b1 )
#endif /* NEQN */
supsh = -(h1-b1) + (h3-b3) - d2;
#ifndef NEQN
eht[yyval.token] = h1 + max(0, h3-VERT( (6*(h1-b1))/10 )) + max(0, h2-b1-d1);
#else /* NEQN */
eht[yyval.token] = h1 + max(0, h3-VERT(1)) + max(0, h2-b1-d1);
#endif /* NEQN */
ebase[yyval.token] = b1+max(0, h2-b1-d1);
#ifndef NEQN
if (ital(rfont[p1]) && rom(lfont[p2]))
printf(".ds %d \\|\\*(%d\n", p2, p2);
if (ital(rfont[p2]))
printf(".as %d \\|\n", p2);
#endif /* NEQN */
nrwid(p2, effps, p2);
#ifndef NEQN
if (ital(rfont[p1]) && rom(lfont[p3]))
printf(".ds %d \\|\\|\\*(%d\n", p3, p3);
else
printf(".ds %d \\|\\*(%d\n", p3, p3);
#endif /* NEQN */
nrwid(p3, effps, p3);
printf(".nr %d \\n(%d\n", treg, p3);
printf(".if \\n(%d>\\n(%d .nr %d \\n(%d\n", p2, treg, treg, p2);
#ifndef NEQN
printf(".as %d \\v'%gp'\\s%s\\*(%d\\h'-\\n(%du'\\v'%gp'\\\n",
p1, subsh, tsize(effps), p2, p2, -subsh+supsh);
printf("\\s%s\\*(%d\\h'-\\n(%du+\\n(%du'\\s%s\\v'%gp'\n",
tsize(effps), p3, p3, treg, tsize(effps2), -supsh);
#else /* NEQN */
printf(".as %d \\v'%du'\\*(%d\\h'-\\n(%du'\\v'%du'\\\n",
p1, subsh, p2, p2, -subsh+supsh);
printf("\\*(%d\\h'-\\n(%du+\\n(%du'\\v'%du'\n",
p3, p3, treg, -supsh);
#endif /* NEQN */
ps += deltaps;
#ifndef NEQN
if (ital(rfont[p2]))
rfont[yyval.token] = 0; /* lie */
#endif /* NEQN */
ofree(p2); ofree(p3); ofree(treg);
}
|
