#include <time.h> #include <sys/time.h> #include <sys/types.h> #include <unistd.h> int usleep (__useconds_t usec) { const struct timespec ts = { .tv_sec = (long int) (usec / 1000000), .tv_nsec = (long int) (usec % 1000000) * 1000ul }; return(nanosleep(&ts, NULL)); }