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─────Run-Time Library───────────────────────────────────────────────────────
 
  Constant:  SIG_DFL, SIG_IGN
 
  Include:   <signal.h>
 
  Context:   signal
 
  Summary:   The action taken when the interrupt signal is received
             depends on the value of <func>.
 
     The <func> argument must be either a function address or one of
     the manifest constants listed below and defined in SIGNAL.H.
 
     Constant     Meaning
 
     SIG_DFL      Uses system-default response. Under DOS versions 3.x
                  or earlier, the calling process is terminated and
                  control returns to the DOS command level. If the
                  calling program uses stream I/O, buffers created by
                  the run-time library are not flushed. (DOS buffers
                  are flushed.)
 
     SIG_IGN      Ignores interrupt signal. This value should never be
                  given for SIGFPE, since the floating-point state of
                  the process is left undefined.
                                    -♦-