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root/Development/ray/src/util/rad.c
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Comparing ray/src/util/rad.c (file contents):
Revision 2.8 by greg, Tue May 18 13:07:56 1993 UTC vs.
Revision 2.9 by greg, Wed May 26 11:37:42 1993 UTC

# Line 845 | Line 845 | register char  *vs;
845          register int    i;
846          double  cent[3], dim[3], mult, d;
847  
848 <        if (*vs == '-')
848 >        if (vs == NULL || *vs == '-')
849                  return(vs);
850          upax = 0;                       /* get the up vector */
851          if (vdef(UP)) {

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