1FD_CLR(3P)                 POSIX Programmer's Manual                FD_CLR(3P)
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PROLOG

6       This  manual  page is part of the POSIX Programmer's Manual.  The Linux
7       implementation of this interface may differ (consult the  corresponding
8       Linux  manual page for details of Linux behavior), or the interface may
9       not be implemented on Linux.
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NAME

13       FD_CLR — macros for synchronous I/O multiplexing
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SYNOPSIS

16       #include <sys/select.h>
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18       void FD_CLR(int fd, fd_set *fdset);
19       int FD_ISSET(int fd, fd_set *fdset);
20       void FD_SET(int fd, fd_set *fdset);
21       void FD_ZERO(fd_set *fdset);
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DESCRIPTION

24       Refer to pselect().
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27       Portions of this text are reprinted and reproduced in  electronic  form
28       from IEEE Std 1003.1, 2013 Edition, Standard for Information Technology
29       -- Portable Operating System Interface (POSIX),  The  Open  Group  Base
30       Specifications Issue 7, Copyright (C) 2013 by the Institute of Electri‐
31       cal and Electronics Engineers,  Inc  and  The  Open  Group.   (This  is
32       POSIX.1-2008  with  the  2013  Technical Corrigendum 1 applied.) In the
33       event of any discrepancy between this version and the original IEEE and
34       The  Open Group Standard, the original IEEE and The Open Group Standard
35       is the referee document. The original Standard can be  obtained  online
36       at http://www.unix.org/online.html .
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38       Any  typographical  or  formatting  errors that appear in this page are
39       most likely to have been introduced during the conversion of the source
40       files  to  man page format. To report such errors, see https://www.ker‐
41       nel.org/doc/man-pages/reporting_bugs.html .
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45IEEE/The Open Group                  2013                           FD_CLR(3P)
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