/*
* Copyright 2005 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
/* Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */
/* All Rights Reserved */
/*
* Copyright (c) 1980 Regents of the University of California.
* All rights reserved. The Berkeley software License Agreement
* specifies the terms and conditions for redistribution.
*/
#pragma ident "%Z%%M% %I% %E% SMI"
#include "e.h"
void
lpile(int type, int p1, int p2)
{
int bi, hi, i, gap, h, b, nlist, nlist2, mid;
yyval = oalloc();
#ifndef NEQN
gap = VERT(EM(0.4, ps)); /* 4/10 m between blocks */
#else /* NEQN */
gap = VERT(1);
#endif /* NEQN */
if (type == '-') gap = 0;
nlist = p2 - p1;
nlist2 = (nlist+1)/2;
mid = p1 + nlist2 -1;
h = 0;
for (i = p1; i < p2; i++)
h += eht[lp[i]];
eht[yyval] = h + (nlist-1)*gap;
b = 0;
for (i = p2-1; i > mid; i--)
b += eht[lp[i]] + gap;
#ifndef NEQN
ebase[yyval] = (nlist%2) ? b + ebase[lp[mid]]
: b - VERT(EM(0.5, ps)) - gap;
#else /* NEQN */
ebase[yyval] = (nlist%2) ? b + ebase[lp[mid]]
: b - VERT(1) - gap;
#endif /* NEQN */
if (dbg) {
printf(".\tS%d <- %c pile of:", yyval, type);
for (i = p1; i < p2; i++)
printf(" S%d", lp[i]);
printf(";h=%d b=%d\n", eht[yyval], ebase[yyval]);
}
nrwid(lp[p1], ps, lp[p1]);
printf(".nr %d \\n(%d\n", yyval, lp[p1]);
for (i = p1+1; i < p2; i++) {
nrwid(lp[i], ps, lp[i]);
printf(".if \\n(%d>\\n(%d .nr %d \\n(%d\n",
lp[i], yyval, yyval, lp[i]);
}
printf(".ds %d \\v'%du'\\h'%du*\\n(%du'\\\n", yyval, ebase[yyval],
type == 'R' ? 1 : 0, yyval);
for (i = p2-1; i >= p1; i--) {
hi = eht[lp[i]];
bi = ebase[lp[i]];
switch (type) {
case 'L':
printf("\\v'%du'\\*(%d\\h'-\\n(%du'\\v'0-%du'\\\n",
-bi, lp[i], lp[i], hi-bi+gap);
continue;
case 'R':
printf("\\v'%du'\\h'-\\n(%du'\\*(%d\\v'0-%du'\\\n",
-bi, lp[i], lp[i], hi-bi+gap);
continue;
case 'C':
case '-':
printf("\\v'%du'\\h'\\n(%du-\\n(%du/2u'\\*(%d",
-bi, yyval, lp[i], lp[i]);
printf("\\h'-\\n(%du-\\n(%du/2u'\\v'0-%du'\\\n",
yyval, lp[i], hi-bi+gap);
continue;
}
}
printf("\\v'%du'\\h'%du*\\n(%du'\n", eht[yyval]-ebase[yyval]+gap,
type != 'R' ? 1 : 0, yyval);
for (i = p1; i < p2; i++)
ofree(lp[i]);
lfont[yyval] = rfont[yyval] = 0;
}