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root/radiance/ray/src/rt/m_direct.c
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Comparing ray/src/rt/m_direct.c (file contents):
Revision 2.10 by greg, Wed Mar 5 16:16:53 2003 UTC vs.
Revision 2.11 by schorsch, Sun Jul 27 22:12:03 2003 UTC

# Line 203 | Line 203 | int  n;
203                          pm[i][j] += nv[i]*h[j];
204                  pm[3][j] = -od*h[j];
205          }
206 <        if (newdot > 0.0 ^ olddot > 0.0)        /* add mirroring */
206 >        if ((newdot > 0.0) ^ (olddot > 0.0))    /* add mirroring */
207                  for (j = 0; j < 3; j++) {
208                          for (i = 0; i < 3; i++)
209                                  pm[i][j] -= 2.*nv[i]*nv[j];

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