ref: 5f8bcc92abfc8fb9024ad3f9d2ac6c9af342a67d dir: /sys/src/cmd/bzip2/lib/unix.h/
#include <stdio.h> #include <stdlib.h> #include <string.h> #include <signal.h> #include <math.h> #include <errno.h> #include <ctype.h>