signal Action Constants
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The action taken when the interrupt signal is received depends on the value of func.
Syntax
#include <signal.h>
Remarks
The func argument must be either a function address or one of the manifest constants listed below and defined in SIGNAL.H.
SIG_DFL
Uses system-default response. If the calling program uses stream I/O, buffers created by the run-time library are not 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.
SIG_SGE
Indicates an error occurred in the signal.
SIG_ACK
Indicates an acknowledgement was received.
SIG_ERR
A return type from a signal indicating an error has occurred.