NAME

     on_exit - register a function to be called at normal program
     termination.


SYNOPSIS

     #include <stdlib.h>

     int on_exit(void (*function))(int , void *), void *arg));


DESCRIPTION

     The on_exit() function registers the given  function  to  be
     called at normal program termination, whether via exit(3) or
     via return from the program's main.  The function is  passed
     the argument to exit(3) and the arg argument from on_exit().


RETURN VALUE

     The on_exit() function returns the value  0  if  successful;
     otherwise the value -1 is returned.


SEE ALSO

     exit(3), atexit(3)