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- # include "e.h"
- void fromto(int p1, int p2, int p3)
- {
- double b, h1, b1, t;
- int subps;
- yyval = salloc();
- lfont[yyval] = rfont[yyval] = 0;
- h1 = eht[yyval] = eht[p1];
- b1 = ebase[p1];
- b = 0;
- subps = ps;
- ps += deltaps;
- nrwid(p1, ps, p1);
- printf(".nr %d \\n(%d\n", yyval, p1);
- if (p2 > 0) {
- nrwid(p2, subps, 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, subps, 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) {
- t = eht[p2]-ebase[p2]+b1;
- printf("\\v'%gm'\\h'\\n(%du-\\n(%du/2u'%s\\*(%d%s",
- REL(t,ps), yyval, p2, DPS(ps,subps), p2, DPS(subps,ps));
- printf("\\h'-\\n(%du-\\n(%du/2u'\\v'%gm'\\\n",
- yyval, p2, REL(-t,ps));
- }
- printf("\\h'\\n(%du-\\n(%du/2u'\\*(%d\\h'\\n(%du-\\n(%du/2u'\\\n",
- yyval, p1, p1, yyval, p1);
- if (p3 >0) {
- t = h1-b1+ebase[p3];
- printf("\\v'%gm'\\h'-\\n(%du-\\n(%du/2u'%s\\*(%d%s\\h'\\n(%du-\\n(%du/2u'\\v'%gm'\\\n",
- REL(-t,ps), yyval, p3, DPS(ps,subps), p3, DPS(subps,ps), yyval, p3, REL(t,ps));
- }
- printf("\n");
- ebase[yyval] = b + b1;
- dprintf(".\tS%d <- %d from %d to %d; h=%g b=%g\n",
- yyval, p1, p2, p3, eht[yyval], ebase[yyval]);
- sfree(p1);
- if (p2 > 0)
- sfree(p2);
- if (p3 > 0)
- sfree(p3);
- }
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