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NetBSD 6.1.5 - man page for atexit (netbsd section 3)

ATEXIT(3)			   BSD Library Functions Manual 			ATEXIT(3)

NAME
     atexit -- register a function to be called on exit

LIBRARY
     Standard C Library (libc, -lc)

SYNOPSIS
     #include <stdlib.h>

     int
     atexit(void (*function)(void));

DESCRIPTION
     The atexit() function registers the given function to be called at program exit, whether via
     exit(3) or via return from the program's main.  Functions so registered are called in
     reverse order; no arguments are passed.  At least 32 functions can always be registered, and
     more are allowed as long as sufficient memory can be allocated.

RETURN VALUES
     The atexit() function returns the value 0 if successful; otherwise the value -1 is returned
     and the global variable errno is set to indicate the error.

ERRORS
     [ENOMEM]		No memory was available to add the function to the list.  The existing
			list of functions is unmodified.

SEE ALSO
     exit(3)

STANDARDS
     The atexit() function conforms to ANSI X3.159-1989 (``ANSI C89'').

BSD					   June 4, 1993 				      BSD


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