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─────Run-Time Library───────────────────────────────────────────────────────
 
     The raise function sends <sig> to the executing program. If a
     signal-handling routine for <sig> has been installed by a prior
     call to signal, raise causes the routine to be executed. If no
     handler routine has been installed, the default action is taken.
 
     The signal value <sig> can be one of the following manifest
     constants (defined in SIGNAL.H):
 
     SIGABRT     SIGFPE      SIGILL
     SIGINT      SIGSEGV     SIGTERM
 
     Note that SIGILL, SIGSEGV, and SIGTERM are not generated under
     DOS. They are included for ANSI compatibility. Thus you can set
     signal handlers for these signals via signal, and you can also
     explicitly generate these signals by calling raise.
 
     Return Value
 
     If successful, the raise function returns 0. Otherwise, it returns
     a nonzero value.
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