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Comparing ray/src/rt/ambcomp.c (file contents):
Revision 2.11 by schorsch, Mon Jul 21 22:30:19 2003 UTC vs.
Revision 2.13 by greg, Wed Apr 13 23:00:59 2005 UTC

# Line 34 | Line 34 | AMBSAMP  *d1, *d2;
34   {
35          register int  c;
36  
37 <        if (c = d1->t - d2->t)
37 >        if ( (c = d1->t - d2->t) )
38                  return(c);
39          return(d1->p - d2->p);
40   }
# Line 230 | Line 230 | double  wt;
230   {
231          register int  i;
232                                          /* set number of divisions */
233 –        if (wt < (.25*PI)/ambdiv+FTINY) {
234 –                hp->nt = hp->np = 0;
235 –                return;                 /* zero samples */
236 –        }
233          hp->nt = sqrt(ambdiv * wt / PI) + 0.5;
234 +        i = ambacc > FTINY ? 3 : 1;     /* minimum number of samples */
235 +        if (hp->nt < i)
236 +                hp->nt = i;
237          hp->np = PI * hp->nt + 0.5;
238                                          /* make axes */
239          VCOPY(hp->uz, r->ron);

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