#ifndef _SIGNAL_
#define _SIGNAL_

/* request types */
#define SIGINT 2

/* args & returns */
#define	SIG_ERR		(void (*)(int))-1
#define	SIG_DFL		(void (*)(int))0
#define	SIG_IGN		(void (*)(int))1

void    (*signal(int sig,void (*handler)(int)))(int);

#endif /* _SIGNAL_ */