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Comparing ray/src/common/fvect.h (file contents):
Revision 2.1 by greg, Tue Nov 12 16:54:16 1991 UTC vs.
Revision 2.5 by gregl, Wed Oct 22 14:15:47 1997 UTC

# Line 4 | Line 4
4  
5   #ifdef  SMLFLT
6   #define  FLOAT          float
7 < #define  FTINY          (1e-4)
7 > #define  FTINY          (1e-3)
8   #else
9   #define  FLOAT          double
10   #define  FTINY          (1e-6)
# Line 15 | Line 15 | typedef FLOAT  FVECT[3];
15  
16   #define  VCOPY(v1,v2)   ((v1)[0]=(v2)[0],(v1)[1]=(v2)[1],(v1)[2]=(v2)[2])
17   #define  DOT(v1,v2)     ((v1)[0]*(v2)[0]+(v1)[1]*(v2)[1]+(v1)[2]*(v2)[2])
18 + #define  VLEN(v)        sqrt(DOT(v,v))
19   #define  VSUM(vr,v1,v2,f)       ((vr)[0]=(v1)[0]+(f)*(v2)[0], \
20                                  (vr)[1]=(v1)[1]+(f)*(v2)[1], \
21                                  (vr)[2]=(v1)[2]+(f)*(v2)[2])
22  
23 < extern double  sqrt(), fdot(), dist2(), dist2lseg(), dist2line(), normalize();
23 > extern double  fdot(), dist2(), dist2lseg(), dist2line(), normalize();

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