1 /*-
2 * Copyright (c) 1991 The Regents of the University of California.
3 * All rights reserved.
4 *
5 * %sccs.include.proprietary.c%
6 */
7
8 #ifndef lint
9 static char sccsid[] = "@(#)pile.c 4.4 (Berkeley) 04/17/91";
10 #endif /* not lint */
11
12 # include "e.h"
13
lpile(type,p1,p2)14 lpile(type, p1, p2) int type, p1, p2; {
15 int bi, hi, i, gap, h, b, nlist, nlist2, mid;
16 yyval = oalloc();
17 #ifndef NEQN
18 gap = VERT( (ps*6*4)/10 ); /* 4/10 m between blocks */
19 #else NEQN
20 gap = VERT(1);
21 #endif NEQN
22 if( type=='-' ) gap = 0;
23 nlist = p2 - p1;
24 nlist2 = (nlist+1)/2;
25 mid = p1 + nlist2 -1;
26 h = 0;
27 for( i=p1; i<p2; i++ )
28 h += eht[lp[i]];
29 eht[yyval] = h + (nlist-1)*gap;
30 b = 0;
31 for( i=p2-1; i>mid; i-- )
32 b += eht[lp[i]] + gap;
33 ebase[yyval] = (nlist%2) ? b + ebase[lp[mid]]
34 #ifndef NEQN
35 : b - VERT( (ps*6*5)/10 ) - gap;
36 #else NEQN
37 : b - VERT(1) - gap;
38 #endif NEQN
39 if(dbg) {
40 printf(".\tS%d <- %c pile of:", yyval, type);
41 for( i=p1; i<p2; i++)
42 printf(" S%d", lp[i]);
43 printf(";h=%d b=%d\n", eht[yyval], ebase[yyval]);
44 }
45 nrwid(lp[p1], ps, lp[p1]);
46 printf(".nr %d \\n(%d\n", yyval, lp[p1]);
47 for( i = p1+1; i<p2; i++ ) {
48 nrwid(lp[i], ps, lp[i]);
49 printf(".if \\n(%d>\\n(%d .nr %d \\n(%d\n",
50 lp[i], yyval, yyval, lp[i]);
51 }
52 printf(".ds %d \\v'%du'\\h'%du*\\n(%du'\\\n", yyval, ebase[yyval],
53 type=='R' ? 1 : 0, yyval);
54 for(i = p2-1; i >=p1; i--) {
55 hi = eht[lp[i]];
56 bi = ebase[lp[i]];
57 switch(type) {
58
59 case 'L':
60 printf("\\v'%du'\\*(%d\\h'-\\n(%du'\\v'0-%du'\\\n",
61 -bi, lp[i], lp[i], hi-bi+gap);
62 continue;
63 case 'R':
64 printf("\\v'%du'\\h'-\\n(%du'\\*(%d\\v'0-%du'\\\n",
65 -bi, lp[i], lp[i], hi-bi+gap);
66 continue;
67 case 'C':
68 case '-':
69 printf("\\v'%du'\\h'\\n(%du-\\n(%du/2u'\\*(%d",
70 -bi, yyval, lp[i], lp[i]);
71 printf("\\h'-\\n(%du-\\n(%du/2u'\\v'0-%du'\\\n",
72 yyval, lp[i], hi-bi+gap);
73 continue;
74 }
75 }
76 printf("\\v'%du'\\h'%du*\\n(%du'\n", eht[yyval]-ebase[yyval]+gap,
77 type!='R' ? 1 : 0, yyval);
78 for( i=p1; i<p2; i++ )
79 ofree(lp[i]);
80 lfont[yyval] = rfont[yyval] = 0;
81 }
82