#define SIGHUP 1 /* hangup */
#define SIGINT 2 /* interrupt */
#define SIGQUIT 3 /* quit */
#define SIGILL 4 /* illegal instruction (not reset when caught) */
#define SIGTRAP 5 /* trace trap (not reset when caught) */
#define SIGABRT 6 /* abort() */
#if (defined(_POSIX_C_SOURCE) && !defined(_DARWIN_C_SOURCE))
#define SIGPOLL 7 /* pollable event ([XSR] generated, not supported) */
#else /* (!_POSIX_C_SOURCE || _DARWIN_C_SOURCE) */
#define SIGIOT SIGABRT /* compatibility */
#define SIGEMT 7 /* EMT instruction */
#endif /* (!_POSIX_C_SOURCE || _DARWIN_C_SOURCE) */
#define SIGFPE 8 /* floating point exception */
#define SIGKILL 9 /* kill (cannot be caught or ignored) */
#define SIGBUS 10 /* bus error */
#define SIGSEGV 11 /* segmentation violation */
#define SIGSYS 12 /* bad argument to system call */
#define SIGPIPE 13 /* write on a pipe with no one to read it */
#define SIGALRM 14 /* alarm clock */
#define SIGTERM 15 /* software termination signal from kill */
#define SIGURG 16 /* urgent condition on IO channel */
#define SIGSTOP 17 /* sendable stop signal not from tty */
#define SIGTSTP 18 /* stop signal from tty */
#define SIGCONT 19 /* continue a stopped process */
#define SIGCHLD 20 /* to parent on child stop or exit */
#define SIGTTIN 21 /* to readers pgrp upon background tty read */
#define SIGTTOU 22 /* like TTIN for output if (tp->t_local<OSTOP) */
#if (!defined(_POSIX_C_SOURCE) || defined(_DARWIN_C_SOURCE))
#define SIGIO 23 /* input/output possible signal */
#endif
#define SIGXCPU 24 /* exceeded CPU time limit */
#define SIGXFSZ 25 /* exceeded file size limit */
#define SIGVTALRM 26 /* virtual time alarm */
#define SIGPROF 27 /* profiling time alarm */
#if (!defined(_POSIX_C_SOURCE) || defined(_DARWIN_C_SOURCE))
#define SIGWINCH 28 /* window size changes */
#define SIGINFO 29 /* information request */
#endif
#define SIGUSR1 30 /* user defined signal 1 */
#define SIGUSR2 31 /* user defined signal 2 */
#if defined(_ANSI_SOURCE) || __DARWIN_UNIX03 || defined(__cplusplus)
/*
* Language spec sez we must list exactly one parameter, even though we
* actually supply three. Ugh!
* SIG_HOLD is chosen to avoid KERN_SIG_* values in <sys signalvar.h="">
*/
#define SIG_DFL (void (*)(int))0
#define SIG_IGN (void (*)(int))1
#define SIG_HOLD (void (*)(int))5
#define SIG_ERR ((void (*)(int))-1)
#else
/* DO NOT REMOVE THE COMMENTED OUT int: fixincludes needs to see them */
#define SIG_DFL (void (*)(/*int*/))0
#define SIG_IGN (void (*)(/*int*/))1
#define SIG_HOLD (void (*)(/*int*/))5
#define SIG_ERR ((void (*)(/*int*/))-1)
#endif
</sys>