1 #ifndef lint
2 static char sccsid[] = "@(#)over.c 2.2 (CWI) 87/04/01";
3 #endif lint
4 # include "e.h"
5
boverb(p1,p2)6 boverb(p1, p2)
7 int p1, p2;
8 {
9 int treg;
10 float h, b, d, d1, d2, d3;
11 extern float Overgap, Overwid, Overline;
12
13 treg = salloc();
14 yyval = p1;
15 d = EM(Overgap, ps);
16 h = eht[p1] + eht[p2] + d;
17 b = eht[p2] - d;
18 dprintf(".\tS%d <- %d over %d; b=%g, h=%g\n",
19 yyval, p1, p2, b, h);
20 nrwid(p1, ps, p1);
21 nrwid(p2, ps, p2);
22 printf(".nr %d \\n(%d\n", treg, p1);
23 printf(".if \\n(%d>\\n(%d .nr %d \\n(%d\n", p2, treg, treg, p2);
24 printf(".nr %d \\n(%d+%gm\n", treg, treg, Overwid);
25 d2 = eht[p2]-ebase[p2]-d; /* denom */
26 printf(".ds %d \\v'%gm'\\h'\\n(%du-\\n(%du/2u'\\*(%d\\v'%gm'\\\n",
27 yyval, REL(d2,ps), treg, p2, p2, REL(-d2,ps));
28 d1 = 2 * d + ebase[p1]; /* num */
29 printf("\\h'-\\n(%du-\\n(%du/2u'\\v'%gm'\\*(%d\\v'%gm'\\\n",
30 p2, p1, REL(-d1,ps), p1, REL(d1,ps));
31 printf("\\h'-\\n(%du-\\n(%du/2u+%gm'\\v'%gm'\\l'\\n(%du-%gm'\\h'%gm'\\v'%gm'\n",
32 treg, p1, Overline, REL(-d,ps),
33 treg, 2*Overline, Overline, REL(d,ps));
34 ebase[yyval] = b;
35 eht[yyval] = h;
36 lfont[yyval] = rfont[yyval] = 0;
37 sfree(p2);
38 sfree(treg);
39 }
40