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/* 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.
*/
/*
* Copyright (c) 1983, 1984 1985, 1986, 1987, 1988, Sun Microsystems, Inc.
* All Rights Reserved.
*/
#ident "%Z%%M% %I% %E% SMI" /* SVr4.0 1.1 */
# include "e.h"
fromto(p1, p2, p3) int p1, p2, p3; {
int b, h1, b1, pss;
yyval = oalloc();
lfont[yyval] = rfont[yyval] = 0;
h1 = eht[yyval] = eht[p1];
b1 = ebase[p1];
b = 0;
pss = EFFPS(ps);
ps += 3;
nrwid(p1, ps, p1);
printf(".nr %d \\n(%d\n", yyval, p1);
if( p2>0 ) {
nrwid(p2, pss, p2);
printf(".if \\n(%d>\\n(%d .nr %d \\n(%d\n", p2, yyval, yyval, p2);
eht[yyval] += eht[p2];
b = eht[p2];
}
if( p3>0 ) {
nrwid(p3, pss, p3);
printf(".if \\n(%d>\\n(%d .nr %d \\n(%d\n", p3, yyval, yyval, p3);
eht[yyval] += eht[p3];
}
printf(".ds %d ", yyval); /* bottom of middle box */
if( p2>0 ) {
printf("\\v'%du'\\h'\\n(%du-\\n(%du/2u'\\s%d\\*(%d\\s%d",
eht[p2]-ebase[p2]+b1, yyval, p2, pss, p2, EFFPS(ps));
printf("\\h'-\\n(%du-\\n(%du/2u'\\v'%du'\\\n",
yyval, p2, -(eht[p2]-ebase[p2]+b1));
}
#ifndef NEQN
printf("\\h'\\n(%du-\\n(%du/2u'\\*(%d\\h'\\n(%du-\\n(%du/2u'\\\n",
#else NEQN
printf("\\h'\\n(%du-\\n(%du/2u'\\*(%d\\h'\\n(%du-\\n(%du+2u/2u'\\\n",
#endif NEQN
yyval, p1, p1, yyval, p1);
if( p3>0 ) {
printf("\\v'%du'\\h'-\\n(%du-\\n(%du/2u'\\s%d\\*(%d\\s%d\\h'\\n(%du-\\n(%du/2u'\\v'%du'\\\n",
-(h1-b1+ebase[p3]), yyval, p3, pss, p3, EFFPS(ps), yyval, p3, (h1-b1+ebase[p3]));
}
printf("\n");
ebase[yyval] = b + b1;
if(dbg)printf(".\tfrom to: S%d <- %d f %d t %d; h=%d b=%d\n",
yyval, p1, p2, p3, eht[yyval], ebase[yyval]);
ofree(p1);
if( p2>0 ) ofree(p2);
if( p3>0 ) ofree(p3);
}
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