The <signal.h> include file defines the values for signals and declares the signal() and raise() functions.
The <signal.h> include file also defines the following macros:
SIGABRT SIGALL SIG_DFL |
SIG_ERR SIGFPE SIG_IGN |
SIGILL SIGINT SIGIO |
SIGOTHER SIGSEGV SIGTERM |
SIGUSR1 SIGUSR2 |
<signal.h> also declares the function _GetExcData, an i5/OS extension to the C standard library.