2.9BSD - /usr/src/cmd/eqn/over.c

   1: # include "e.h"
   2: 
   3: boverb(p1, p2) int p1, p2; {
   4:     int h, b, treg, d;
   5: 
   6:     treg = oalloc();
   7:     yyval = p1;
   8:     d = VERT((ps*6*3) / 10);    /* 0.3m */
   9:     h = eht[p1] + eht[p2] + d;
  10:     b = eht[p2] - d;
  11:     if(dbg)printf(".\tb:bob: S%d <- S%d over S%d; b=%d, h=%d\n",
  12:         yyval, p1, p2, b, h);
  13:     nrwid(p1, ps, p1);
  14:     nrwid(p2, ps, p2);
  15:     printf(".nr %d \\n(%d\n", treg, p1);
  16:     printf(".if \\n(%d>\\n(%d .nr %d \\n(%d\n", p2, treg, treg, p2);
  17:     printf(".nr %d \\n(%d+\\s%d.5m\\s0\n", treg, treg, EFFPS(ps));
  18:     printf(".ds %d \\v'%du'\\h'\\n(%du-\\n(%du/2u'\\*(%d\\\n",
  19:         yyval, eht[p2]-ebase[p2]-d, treg, p2, p2);
  20:     printf("\\h'-\\n(%du-\\n(%du/2u'\\v'%du'\\*(%d\\\n",
  21:         p2, p1, -(eht[p2]-ebase[p2]+d+ebase[p1]), p1);
  22:     printf("\\h'-\\n(%du-\\n(%du/2u+.1m'\\v'%du'\\l'\\n(%du-.2m'\\h'.1m'\\v'%du'\n",
  23:          treg, p1, ebase[p1]+d, treg, d);
  24:     ebase[yyval] = b;
  25:     eht[yyval] = h;
  26:     lfont[yyval] = rfont[yyval] = 0;
  27:     ofree(p2);
  28:     ofree(treg);
  29: }

Defined functions