Commit | Line | Data |
---|---|---|
6f1a2a65 | 1 | /* shift.c 4.2 83/02/12 */ |
247cb223 BS |
2 | |
3 | # include "e.h" | |
4 | #include "e.def" | |
5 | ||
6 | bshiftb(p1, dir, p2) int p1, dir, p2; { | |
6f1a2a65 BS |
7 | int shval, d1, h1, b1, h2, b2; |
8 | #ifndef NEQN | |
9 | int diffps, effps, effps2; | |
247cb223 | 10 | char *sh1, *sh2; |
6f1a2a65 | 11 | #endif NEQN |
247cb223 BS |
12 | |
13 | yyval = p1; | |
14 | h1 = eht[p1]; | |
15 | b1 = ebase[p1]; | |
16 | h2 = eht[p2]; | |
17 | b2 = ebase[p2]; | |
6f1a2a65 | 18 | #ifndef NEQN |
247cb223 BS |
19 | effps = EFFPS(ps); |
20 | effps2 = EFFPS(ps+deltaps); | |
21 | diffps = deltaps; | |
22 | sh1 = sh2 = ""; | |
6f1a2a65 BS |
23 | #endif NEQN |
24 | if( dir == SUB ) { /* subscript */ | |
25 | #ifndef NEQN | |
247cb223 BS |
26 | /* top 1/2m above bottom of main box */ |
27 | d1 = VERT( (effps2*6)/2 ); | |
6f1a2a65 BS |
28 | #else NEQN |
29 | d1 = VERT(1); | |
30 | #endif NEQN | |
247cb223 BS |
31 | shval = - d1 + h2 - b2; |
32 | if( d1+b1 > h2 ) /* move little sub down */ | |
33 | shval = b1-b2; | |
34 | ebase[yyval] = b1 + max(0, h2-b1-d1); | |
35 | eht[yyval] = h1 + max(0, h2-b1-d1); | |
6f1a2a65 | 36 | #ifndef NEQN |
247cb223 BS |
37 | if (rfont[p1] == ITAL && lfont[p2] == ROM) |
38 | sh1 = "\\|"; | |
39 | if (rfont[p2] == ITAL) | |
40 | sh2 = "\\|"; | |
6f1a2a65 | 41 | #endif NEQN |
247cb223 | 42 | } else { /* superscript */ |
6f1a2a65 | 43 | #ifndef NEQN |
247cb223 BS |
44 | /* 4/10 up main box */ |
45 | d1 = VERT( (effps*6*2)/10 ); | |
6f1a2a65 BS |
46 | #else NEQN |
47 | d1 = VERT(1); | |
48 | #endif NEQN | |
247cb223 | 49 | ebase[yyval] = b1; |
6f1a2a65 | 50 | #ifndef NEQN |
247cb223 BS |
51 | shval = -VERT( (4 * (h1-b1)) / 10 ) - b2; |
52 | if( VERT(4*(h1-b1)/10) + h2 < h1-b1 ) /* raise little super */ | |
6f1a2a65 BS |
53 | #else NEQN |
54 | shval = -VERT(1) - b2; | |
55 | if( VERT(1) + h2 < h1-b1 ) /* raise little super */ | |
56 | #endif NEQN | |
247cb223 | 57 | shval = -(h1-b1) + h2-b2 - d1; |
6f1a2a65 | 58 | #ifndef NEQN |
247cb223 BS |
59 | eht[yyval] = h1 + max(0, h2-VERT((6*(h1-b1))/10)); |
60 | if (rfont[p1] == ITAL) | |
61 | sh1 = "\\|"; | |
62 | if (rfont[p2] == ITAL) | |
63 | sh2 = "\\|"; | |
6f1a2a65 BS |
64 | #else NEQN |
65 | eht[yyval] = h1 + max(0, h2 - VERT(1)); | |
66 | #endif NEQN | |
247cb223 BS |
67 | } |
68 | if(dbg)printf(".\tb:b shift b: S%d <- S%d vert %d S%d vert %d; b=%d, h=%d\n", | |
69 | yyval, p1, shval, p2, -shval, ebase[yyval], eht[yyval]); | |
6f1a2a65 | 70 | #ifndef NEQN |
247cb223 BS |
71 | printf(".as %d \\v'%du'\\s-%d%s\\*(%d\\s+%d%s\\v'%du'\n", |
72 | yyval, shval, diffps, sh1, p2, diffps, sh2, -shval); | |
73 | ps += deltaps; | |
74 | if (rfont[p2] == ITAL) | |
75 | rfont[p1] = 0; | |
76 | else | |
77 | rfont[p1] = rfont[p2]; | |
6f1a2a65 BS |
78 | #else NEQN |
79 | printf(".as %d \\v'%du'\\*(%d\\v'%du'\n", | |
80 | yyval, shval, p2, -shval); | |
81 | #endif NEQN | |
247cb223 BS |
82 | ofree(p2); |
83 | } | |
84 | ||
85 | shift(p1) int p1; { | |
86 | ps -= deltaps; | |
87 | yyval = p1; | |
88 | if(dbg)printf(".\tshift: %d;ps=%d\n", yyval, ps); | |
89 | } | |
90 | ||
91 | shift2(p1, p2, p3) int p1, p2, p3; { | |
6f1a2a65 BS |
92 | int effps, h1, h2, h3, b1, b2, b3, subsh, d1, d2, supsh, treg; |
93 | #ifndef NEQN | |
94 | int effps2; | |
95 | #endif NEQN | |
96 | ||
247cb223 BS |
97 | treg = oalloc(); |
98 | yyval = p1; | |
99 | if(dbg)printf(".\tshift2 s%d <- %d %d %d\n", yyval, p1, p2, p3); | |
100 | effps = EFFPS(ps+deltaps); | |
6f1a2a65 | 101 | #ifndef NEQN |
247cb223 BS |
102 | eht[p3] = h3 = VERT( (eht[p3] * effps) / EFFPS(ps) ); |
103 | ps += deltaps; | |
104 | effps2 = EFFPS(ps+deltaps); | |
6f1a2a65 | 105 | #endif NEQN |
247cb223 BS |
106 | h1 = eht[p1]; b1 = ebase[p1]; |
107 | h2 = eht[p2]; b2 = ebase[p2]; | |
6f1a2a65 | 108 | #ifndef NEQN |
247cb223 BS |
109 | b3 = ebase[p3]; |
110 | d1 = VERT( (effps2*6)/2 ); | |
6f1a2a65 BS |
111 | #else NEQN |
112 | h3 = eht[p3]; b3 = ebase[p3]; | |
113 | d1 = VERT(1); | |
114 | #endif NEQN | |
247cb223 BS |
115 | subsh = -d1+h2-b2; |
116 | if( d1+b1 > h2 ) /* move little sub down */ | |
117 | subsh = b1-b2; | |
6f1a2a65 | 118 | #ifndef NEQN |
247cb223 BS |
119 | supsh = -VERT( (4*(h1-b1))/10 ) - b3; |
120 | d2 = VERT( (effps*6*2)/10 ); | |
121 | if( VERT(4*(h1-b1)/10)+h3 < h1-b1 ) | |
6f1a2a65 BS |
122 | #else NEQN |
123 | supsh = - VERT(1) - b3; | |
124 | d2 = VERT(1); | |
125 | if( VERT(1)+h3 < h1-b1 ) | |
126 | #endif NEQN | |
247cb223 | 127 | supsh = -(h1-b1) + (h3-b3) - d2; |
6f1a2a65 | 128 | #ifndef NEQN |
247cb223 | 129 | eht[yyval] = h1 + max(0, h3-VERT( (6*(h1-b1))/10 )) + max(0, h2-b1-d1); |
6f1a2a65 BS |
130 | #else NEQN |
131 | eht[yyval] = h1 + max(0, h3-VERT(1)) + max(0, h2-b1-d1); | |
132 | #endif NEQN | |
247cb223 | 133 | ebase[yyval] = b1+max(0, h2-b1-d1); |
6f1a2a65 | 134 | #ifndef NEQN |
247cb223 BS |
135 | if (rfont[p1] == ITAL && lfont[p2] == ROM) |
136 | printf(".ds %d \\|\\*(%d\n", p2, p2); | |
137 | if (rfont[p2] == ITAL) | |
138 | printf(".as %d \\|\n", p2); | |
6f1a2a65 | 139 | #endif NEQN |
247cb223 | 140 | nrwid(p2, effps, p2); |
6f1a2a65 | 141 | #ifndef NEQN |
247cb223 BS |
142 | if (rfont[p1] == ITAL && lfont[p3] == ROM) |
143 | printf(".ds %d \\|\\|\\*(%d\n", p3, p3); | |
144 | else | |
145 | printf(".ds %d \\|\\*(%d\n", p3, p3); | |
6f1a2a65 | 146 | #endif NEQN |
247cb223 BS |
147 | nrwid(p3, effps, p3); |
148 | printf(".nr %d \\n(%d\n", treg, p3); | |
149 | printf(".if \\n(%d>\\n(%d .nr %d \\n(%d\n", p2, treg, treg, p2); | |
6f1a2a65 | 150 | #ifndef NEQN |
247cb223 BS |
151 | printf(".as %d \\v'%du'\\s%d\\*(%d\\h'-\\n(%du'\\v'%du'\\\n", |
152 | p1, subsh, effps, p2, p2, -subsh+supsh); | |
153 | printf("\\s%d\\*(%d\\h'-\\n(%du+\\n(%du'\\s%d\\v'%du'\n", | |
154 | effps, p3, p3, treg, effps2, -supsh); | |
6f1a2a65 BS |
155 | #else NEQN |
156 | printf(".as %d \\v'%du'\\*(%d\\h'-\\n(%du'\\v'%du'\\\n", | |
157 | p1, subsh, p2, p2, -subsh+supsh); | |
158 | printf("\\*(%d\\h'-\\n(%du+\\n(%du'\\v'%du'\n", | |
159 | p3, p3, treg, -supsh); | |
160 | #endif NEQN | |
247cb223 | 161 | ps += deltaps; |
6f1a2a65 | 162 | #ifndef NEQN |
247cb223 BS |
163 | if (rfont[p2] == ITAL) |
164 | rfont[yyval] = 0; /* lie */ | |
6f1a2a65 | 165 | #endif NEQN |
247cb223 BS |
166 | ofree(p2); ofree(p3); ofree(treg); |
167 | } |