src/main/common/olc.h

   1 #pragma once
   2
   3 #include <stddef.h>
   4 #include <stdint.h>
   5
   6 #define OLC_DEG_MULTIPLIER ((olc_coord_t)10000000LL) // 1e7
   7
   8 typedef int32_t olc_coord_t;
   9 typedef uint32_t uolc_coord_t;
  10
  11 // olc_encodes the given coordinates in lat and lon (deg * OLC_DEG_MULTIPLIER)
  12 // as an OLC code of the given length. It returns the number of characters
  13 // written to buf.
  14 int olc_encode(olc_coord_t lat, olc_coord_t lon, size_t length, char *buf, size_t bufsize);