GRASS GIS 8 Programmer's Manual  8.4.0dev(2024)-9b28d7b83c
pi.h
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1 #ifndef __PI_H__
2 #define __PI_H__
3 
4 #include <grass/gis.h>
5 
6 #define Radians(x) ((x)*M_PI / 180.0)
7 #define Degrees(x) ((x)*180.0 / M_PI)
8 
9 #endif /* __PI_H__ */