.\" Copyright 1993 David Metcalfe (david@prism.demon.co.uk)
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.\" References consulted:
.\"     Linux libc source code
.\"     Lewine's _POSIX Programmer's Guide_ (O'Reilly & Associates, 1991)
.\"     386BSD man pages
.\" Modified Fri Apr  2 18:41:36 1993, David Metcalfe
.\" Modified Sun Jul 25 10:53:14 1993, Rik Faith (faith@cs.unc.edu)
.\" Traducción por Urko Lusa <ulusa@lacueva.ddns.org> 19980305
.TH ON_EXIT 3  "2 abril 1993" "GNU" "Manual del programador de Linux"
.SH NOMBRE
on_exit \- registra una función para ser invocada en la terminación normal de un programa
.SH SINOPSIS
.nf
.B #include <stdlib.h>
.sp
.BI "int on_exit(void (*" funcion ")(int , void *), void *" param );
.fi
.SH DESCRIPCIÓN
La función \fBon_exit()\fP registra la \fIfuncion\fP dada para ser invocada
en la terminación normal de un programa, ya sea vía
.BR exit (3)
o vía el valor retornado por la función \fBmain\fP del programa.
A la \fIfuncion\fP se le pasa el parámetro de
.BR exit (3)
y el parámetro \fIparam\fP de \fBon_exit()\fP.
.SH "VALOR DEVUELTO"
La función \fBon_exit()\fP devuelve el valor 0 en caso de éxito, o un valor distinto
de cero en caso contrario.
.SH "CONFORME A"
Esta función viene de SunOS, pero también está presente en libc4, libc5 y glibc.
.SH "VÉASE TAMBIÉN"
.BR atexit (3),
.BR exit (3)