uint8_t robot_is_near_disc(void);
uint8_t y_is_more_than(int16_t y);
uint8_t x_is_more_than(int16_t x);
+uint8_t __y_is_more_than(int16_t posy, int16_t y);
+uint8_t __x_is_more_than(int16_t posx, int16_t x);
int16_t fast_sin(int16_t deg);
int16_t fast_cos(int16_t deg);
uint8_t get_color(void);