ref: bdcf2a2f5fb2ef0ccda329d0f3f8338fb5009e9c 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>