xref: /csrg-svn/old/eqn/common_source/over.c (revision 14486)
1 #ifndef lint
2 static char sccsid[] = "@(#)over.c	4.3 08/11/83";
3 #endif
4 
5 # include "e.h"
6 
7 boverb(p1, p2) int p1, p2; {
8 	int h, b, treg, d;
9 
10 	treg = oalloc();
11 	yyval = p1;
12 #ifndef NEQN
13 	d = VERT((ps*6*3) / 10);	/* 0.3m */
14 	h = eht[p1] + eht[p2] + d;
15 #else NEQN
16 	d = VERT(1);
17 	h = eht[p1] + eht[p2];
18 #endif NEQN
19 	b = eht[p2] - d;
20 	if(dbg)printf(".\tb:bob: S%d <- S%d over S%d; b=%d, h=%d\n",
21 		yyval, p1, p2, b, h);
22 	nrwid(p1, ps, p1);
23 	nrwid(p2, ps, p2);
24 	printf(".nr %d \\n(%d\n", treg, p1);
25 	printf(".if \\n(%d>\\n(%d .nr %d \\n(%d\n", p2, treg, treg, p2);
26 #ifndef NEQN
27 	printf(".nr %d \\n(%d+\\s%d.5m\\s0\n", treg, treg, EFFPS(ps));
28 #endif NEQN
29 	printf(".ds %d \\v'%du'\\h'\\n(%du-\\n(%du/2u'\\*(%d\\\n",
30 		yyval, eht[p2]-ebase[p2]-d, treg, p2, p2);
31 	printf("\\h'-\\n(%du-\\n(%du/2u'\\v'%du'\\*(%d\\\n",
32 #ifndef NEQN
33 		p2, p1, -(eht[p2]-ebase[p2]+d+ebase[p1]), p1);
34 	printf("\\h'-\\n(%du-\\n(%du/2u+.1m'\\v'%du'\\l'\\n(%du-.2m'\\h'.1m'\\v'%du'\n",
35 		 treg, p1, ebase[p1]+d, treg, d);
36 #else NEQN
37 		p2, p1, -eht[p2]+ebase[p2]-ebase[p1], p1);
38 	printf("\\h'-\\n(%du-\\n(%du-2u/2u'\\v'%du'\\l'\\n(%du'\\v'%du'\n",
39 		 treg, p1, ebase[p1], treg, d);
40 #endif NEQN
41 	ebase[yyval] = b;
42 	eht[yyval] = h;
43 	lfont[yyval] = rfont[yyval] = 0;
44 	ofree(p2);
45 	ofree(treg);
46 }
47