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#include <sys/time.h>

#include <sys/types.h>

#include <unistd.h>

void usleep(unsigned long usec)

{

        struct timeval tv;

        tv.tv_sec = usec / 1000000;

        tv.tv_usec = usec % 1000000;

        select(0,0,0,0, &tv);

}

int sleep(unsigned int sec)

{

        struct timeval tv;

        tv.tv_sec = sec;

        tv.tv_usec = 0;

        select(0,0,0,0, &tv);

        return tv.tv_sec;

}