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/*  * This file is part of the UCB release of Plan 9. It is subject to the license * terms in the LICENSE file found in the top-level directory of this * distribution and at http://akaros.cs.berkeley.edu/files/Plan9License. No * part of the UCB release of Plan 9, including this file, may be copied, * modified, propagated, or distributed except according to the terms contained * in the LICENSE file. */ #include "e.h"#include "y.tab.h" void pile(int oct){	int i, nlist, nlist2, mid;	double bi, h, b, gap, sb;	extern double Pilegap, Pilebase;	int type, p1, p2; 	yyval = salloc();	type = lp[oct];	p1 = oct + 3;		/* first entry */	p2 = p1 + lp[oct+1];	/* 1 after last */	gap = lp[oct+2];	if (gap != DEFGAP)		gap = EM(gap/100.0, ps);	else if (type == COL)		gap = 0;	else		gap = EM(Pilegap, ps);	/* 0.4 m between LCOL, etc. */	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;	ebase[yyval] = (nlist%2) ? b + ebase[lp[mid]]			: b - EM(Pilebase, ps) - gap;	if (dbg) {		printf(".\tS%d <- %d pile of:", yyval, type);		for (i = p1; i < p2; i++)			printf(" S%d", lp[i]);		printf("; h=%g b=%g\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'%gm'\\h'%du*\\n(%du'\\\n", yyval, REL(ebase[yyval],ps), 		type==RCOL ? 1 : 0, yyval);	sb = 0;		/* sum of box hts */	for (i = p2-1; i >= p1; i--) {		bi = sb + ebase[lp[i]];		switch (type) {		case LCOL:			printf("\\v'%gm'\\*(%d\\h'-\\n(%du'\\v'%gm'\\\n", 				REL(-bi,ps), lp[i], lp[i], REL(bi,ps));			break;		case RCOL:			printf("\\v'%gm'\\h'-\\n(%du'\\*(%d\\v'%gm'\\\n", 				REL(-bi,ps), lp[i], lp[i], REL(bi,ps));			break;		case CCOL:		case COL:			printf("\\v'%gm'\\h'\\n(%du-\\n(%du/2u'\\*(%d", 				REL(-bi,ps), yyval, lp[i], lp[i]);			printf("\\h'-\\n(%du-\\n(%du/2u'\\v'%gm'\\\n", 				yyval, lp[i], REL(bi,ps));			break;		}		sb += eht[lp[i]] + gap;	}	printf("\\v'%gm'\\h'%du*\\n(%du'\n", REL(-ebase[yyval],ps), 		type!=RCOL ? 1 : 0, yyval);	for (i = p1; i < p2; i++)		sfree(lp[i]);	lfont[yyval] = rfont[yyval] = 0;}

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