Subversion Repositories planix.SVN

# 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);
}