/*  * 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" void boverb(int p1, int p2){	int treg;	double h, b, d, d1, d2;	extern double Overgap, Overwid, Overline; 	treg = salloc();	yyval = p1;	d = EM(Overgap, ps);	h = eht[p1] + eht[p2] + d;	b = eht[p2] - d;	dprintf(".\tS%d <- %d over %d; b=%g, h=%g\n", 		yyval, p1, p2, b, h);	nrwid(p1, ps, p1);	nrwid(p2, ps, p2);	printf(".nr %d \\n(%d\n", treg, p1);	printf(".if \\n(%d>\\n(%d .nr %d \\n(%d\n", p2, treg, treg, p2);	printf(".nr %d \\n(%d+%gm\n", treg, treg, Overwid);	d2 = eht[p2]-ebase[p2]-d;	/* denom */	printf(".ds %d \\v'%gm'\\h'\\n(%du-\\n(%du/2u'\\*(%d\\v'%gm'\\\n", 		yyval, REL(d2,ps), treg, p2, p2, REL(-d2,ps));	d1 = 2 * d + ebase[p1];		/* num */	printf("\\h'-\\n(%du-\\n(%du/2u'\\v'%gm'\\*(%d\\v'%gm'\\\n", 		p2, p1, REL(-d1,ps), p1, REL(d1,ps));	printf("\\h'-\\n(%du-\\n(%du/2u+%gm'\\v'%gm'\\l'\\n(%du-%gm'\\h'%gm'\\v'%gm'\n", 		treg, p1, Overline, REL(-d,ps),		treg, 2*Overline, Overline, REL(d,ps));	ebase[yyval] = b;	eht[yyval] = h;	lfont[yyval] = rfont[yyval] = 0;	sfree(p2);	sfree(treg);}