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Comparing ray/src/common/rtmath.h (file contents):
Revision 3.12 by schorsch, Thu Mar 10 18:56:34 2016 UTC vs.
Revision 3.13 by greg, Fri Dec 3 16:50:05 2021 UTC

# Line 46 | Line 46 | extern double  atan2a(double y, double x);
46   #define  ttan(x)                (tsin(x)/tcos(x))
47   #endif
48  
49 +                                        /* defined in disk2square.c */
50 + extern void     SDsquare2disk(double ds[2], double seedx, double seedy);
51 + extern void     SDdisk2square(double sq[2], double diskx, double disky);
52 +
53                                          /* defined in xf.c */
54   extern int      xf(XF *ret, int ac, char *av[]);
55   extern int      invxf(XF *ret, int ac, char *av[]);

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