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1.1 ! root 1: .\" Copyright (c) 1990 The Regents of the University of California. ! 2: .\" All rights reserved. ! 3: .\" ! 4: .\" This code is derived from software contributed to Berkeley by ! 5: .\" Chris Torek. ! 6: .\" ! 7: .\" Redistribution and use in source and binary forms are permitted ! 8: .\" provided that: (1) source distributions retain this entire copyright ! 9: .\" notice and comment, and (2) distributions including binaries display ! 10: .\" the following acknowledgement: ``This product includes software ! 11: .\" developed by the University of California, Berkeley and its contributors'' ! 12: .\" in the documentation or other materials provided with the distribution ! 13: .\" and in all advertising materials mentioning features or use of this ! 14: .\" software. Neither the name of the University nor the names of its ! 15: .\" contributors may be used to endorse or promote products derived ! 16: .\" from this software without specific prior written permission. ! 17: .\" THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR ! 18: .\" IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED ! 19: .\" WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. ! 20: .\" ! 21: .\" @(#)atexit.3 5.1 (Berkeley) 5/15/90 ! 22: .\" ! 23: .TH ATEXIT 3 "May 15, 1990" ! 24: .UC 7 ! 25: .SH NAME ! 26: atexit \- register a function to be called on exit ! 27: .SH SYNOPSIS ! 28: .B #include <stdlib.h> ! 29: .PP ! 30: .B "atexit(void (*function)()) ! 31: .SH DESCRIPTION ! 32: .B Atexit ! 33: registers the given ! 34: .I function ! 35: to be called at program exit, whether via ! 36: .IR exit (3) ! 37: or via return from the program's ! 38: .BR main . ! 39: Functions so registered are called in reverse order; ! 40: no arguments are passed. ! 41: At least 32 functions can always be registered, ! 42: and more are allowed as long as sufficient memory can be allocated. ! 43: .SH RETURN VALUE ! 44: .B Atexit ! 45: returns 0 on success, \-1 on error. ! 46: .SH ERRORS ! 47: .TP ! 48: [ENOMEM] ! 49: No memory was available to add the function to the list. ! 50: The existing list of functions is unmodified. ! 51: .SH SEE ALSO ! 52: exit(3) ! 53: .SH STANDARDS ! 54: .B Atexit ! 55: conforms to ANSI X3.159-1989 (``ANSI C'').
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