1 /*
2 * Copyright 2005 Sun Microsystems, Inc. All rights reserved.
3 * Use is subject to license terms.
4 */
5
6 /* Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */
7 /* All Rights Reserved */
8
9 /*
10 * Copyright (c) 1980 Regents of the University of California.
11 * All rights reserved. The Berkeley software License Agreement
12 * specifies the terms and conditions for redistribution.
13 */
14
15 #include "e.h"
16
17 void
boverb(int p1,int p2)18 boverb(int p1, int p2)
19 {
20 int h, b, treg, d;
21
22 treg = oalloc();
23 yyval = p1;
24 #ifndef NEQN
25 d = VERT(EM(0.3, ps));
26 h = eht[p1] + eht[p2] + d;
27 #else /* NEQN */
28 d = VERT(1);
29 h = eht[p1] + eht[p2];
30 #endif /* NEQN */
31 b = eht[p2] - d;
32 if (dbg)
33 printf(".\tb:bob: S%d <- S%d over S%d; b=%d, h=%d\n",
34 yyval, p1, p2, b, h);
35 nrwid(p1, ps, p1);
36 nrwid(p2, ps, p2);
37 printf(".nr %d \\n(%d\n", treg, p1);
38 printf(".if \\n(%d>\\n(%d .nr %d \\n(%d\n", p2, treg, treg, p2);
39 #ifndef NEQN
40 printf(".nr %d \\n(%d+\\s%d.5m\\s0\n", treg, treg, EFFPS(ps));
41 #endif /* NEQN */
42 printf(".ds %d \\v'%du'\\h'\\n(%du-\\n(%du/2u'\\*(%d\\\n",
43 yyval, eht[p2]-ebase[p2]-d, treg, p2, p2);
44 #ifndef NEQN
45 printf("\\h'-\\n(%du-\\n(%du/2u'\\v'%du'\\*(%d\\\n",
46 p2, p1, -(eht[p2]-ebase[p2]+d+ebase[p1]), p1);
47 printf("\\h'-\\n(%du-\\n(%du/2u+.1m'\\v'%du'\\l'\\n"
48 "(%du-.2m'\\h'.1m'\\v'%du'\n", treg, p1, ebase[p1]+d, treg, d);
49 #else /* NEQN */
50 printf("\\h'-\\n(%du-\\n(%du/2u'\\v'%du'\\*(%d\\\n",
51 p2, p1, -eht[p2]+ebase[p2]-ebase[p1], p1);
52 printf("\\h'-\\n(%du-\\n(%du-2u/2u'\\v'%du'\\l'\\n(%du'\\v'%du'\n",
53 treg, p1, ebase[p1], treg, d);
54 #endif /* NEQN */
55 ebase[yyval] = b;
56 eht[yyval] = h;
57 lfont[yyval] = rfont[yyval] = 0;
58 ofree(p2);
59 ofree(treg);
60 }
61