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Comparing ray/src/common/rtmath.h (file contents):
Revision 3.8 by greg, Sat Aug 3 17:53:46 2013 UTC vs.
Revision 3.15 by greg, Mon Dec 13 21:05:00 2021 UTC

# Line 41 | Line 41 | extern double  atan2a(double y, double x);
41   #define  tsin                   sin
42   #define  ttan                   tan
43   #else
44 <                                        /* table-based cosine approximation */
44 >                                        /* table-based approx in tcos.c */
45   #define  tsin(x)                tcos((x)-(PI/2.))
46   #define  ttan(x)                (tsin(x)/tcos(x))
47   #endif
48 –
49 – #ifdef _WIN32
50 – extern double   erf(double x);
51 – extern double   erfc(double x);
52 – #endif
48                                          /* defined in xf.c */
49   extern int      xf(XF *ret, int ac, char *av[]);
50   extern int      invxf(XF *ret, int ac, char *av[]);
# Line 66 | Line 61 | extern double  fdir2diff(int32 dc1, FVECT v2);
61   }
62   #endif
63   #endif /* _RAD_RTMATH_H_ */
69 –

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