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#include "e.h"
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void eqnbox(int p1, int p2, int lu)
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{
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	double b, h;
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	char *sh;
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	extern char *IRspace;
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	yyval = p1;
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	b = max(ebase[p1], ebase[p2]);
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	eht[yyval] = h = b + max(eht[p1]-ebase[p1],
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		eht[p2]-ebase[p2]);
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	ebase[yyval] = b;
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	dprintf(".\tS%d <- %d %d; b=%g, h=%g\n", yyval, p1, p2, b, h);
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	sh = pad(class[rclass[p1]][lclass[p2]]);
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	if (lu) {
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		printf(".nr %d \\w'\\*(%d%s'\n", p1, p1, sh);
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		printf(".ds %d \\h'|\\n(09u-\\n(%du'\\*(%d\n", p1, p1, p1);
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	}
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	printf(".as %d \"%s\\*(%d\n", yyval, sh, p2);
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	rfont[p1] = rfont[p2];
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	rclass[p1] = rclass[p2];
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	sfree(p2);
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}