int16_t distance_between(int16_t x1, int16_t y1, int16_t x2, int16_t y2);
int16_t distance_from_robot(int16_t x, int16_t y);
int16_t simple_modulo_360(int16_t a);
int16_t distance_between(int16_t x1, int16_t y1, int16_t x2, int16_t y2);
int16_t distance_from_robot(int16_t x, int16_t y);
int16_t simple_modulo_360(int16_t a);