shithub: oledsaver

ref: e0043ee088f227d5ce3cbf567ca8ddde53001c9f
dir: /bitart.h/

int
ob0(int x, int y);

int
ob1(int x, int y);

int
ob2(int x, int y);

int
ob3(int x, int y);

int
ob4(int x, int y);

int
ob5(int x, int y);

int
drand(int, int);