NAME    [Toc]    [Back]

     atexit - register a function to be called on exit

LIBRARY    [Toc]    [Back]

     Standard C Library (libc, -lc)

SYNOPSIS    [Toc]    [Back]

     #include <stdlib.h>

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

DESCRIPTION    [Toc]    [Back]

     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    [Toc]    [Back]

     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    [Toc]    [Back]

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

SEE ALSO    [Toc]    [Back]

     exit(3)

STANDARDS    [Toc]    [Back]

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

BSD                              June 4, 1993                              BSD