Standard library header <csignal>
From cppreference.com
                    
                                        
                    
                    
                                                            
                    This header was originally in the C standard library as <signal.h>.
This header is part of the program support library.
 Typedefs | 
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|    the integer type that can be accessed as an atomic entity from an asynchronous signal handler  (typedef)  | 
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 Macros | 
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|    defines signal types  (macro constant)  | 
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|    defines signal handling strategies   (macro constant)  | 
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|    return value of signal specifying that an error was encountered   (macro constant)  | 
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 Functions | 
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|    sets a signal handler for particular signal   (function)  | 
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|    runs the signal handler for particular signal   (function)  | 
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