tover.c - plan9port - [fork] Plan 9 from user space
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       ---
       tover.c (1053B)
       ---
            1 #include "e.h"
            2 
            3 void boverb(int p1, int p2)
            4 {
            5         int treg;
            6         double h, b, d, d1, d2;
            7         extern double Overgap, Overwid, Overline;
            8 
            9         treg = salloc();
           10         yyval = p1;
           11         d = EM(Overgap, ps);
           12         h = eht[p1] + eht[p2] + d;
           13         b = eht[p2] - d;
           14         dprintf(".\tS%d <- %d over %d; b=%g, h=%g\n",
           15                 (int)yyval, p1, p2, b, h);
           16         nrwid(p1, ps, p1);
           17         nrwid(p2, ps, p2);
           18         printf(".nr %d \\n(%d\n", treg, p1);
           19         printf(".if \\n(%d>\\n(%d .nr %d \\n(%d\n", p2, treg, treg, p2);
           20         printf(".nr %d \\n(%d+%gm\n", treg, treg, Overwid);
           21         d2 = eht[p2]-ebase[p2]-d;        /* denom */
           22         printf(".ds %d \\v'%gm'\\h'\\n(%du-\\n(%du/2u'\\*(%d\\v'%gm'\\\n",
           23                 (int)yyval, REL(d2,ps), treg, p2, p2, REL(-d2,ps));
           24         d1 = 2 * d + ebase[p1];                /* num */
           25         printf("\\h'-\\n(%du-\\n(%du/2u'\\v'%gm'\\*(%d\\v'%gm'\\\n",
           26                 p2, p1, REL(-d1,ps), p1, REL(d1,ps));
           27         printf("\\h'-\\n(%du-\\n(%du/2u+%gm'\\v'%gm'\\l'\\n(%du-%gm'\\h'%gm'\\v'%gm'\n",
           28                 treg, p1, Overline, REL(-d,ps),
           29                 treg, 2*Overline, Overline, REL(d,ps));
           30         ebase[yyval] = b;
           31         eht[yyval] = h;
           32         lfont[yyval] = rfont[yyval] = 0;
           33         sfree(p2);
           34         sfree(treg);
           35 }