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system_data_types.7: Add 'fd_set' 

Signed-off-by: Alejandro Colomar <colomar.6.4.3@gmail.com>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
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Alejandro Colomar 2020-10-09 10:42:44 +02:00 committed by Michael Kerrisk
parent 2c1b51b14b
commit abb53fc49c
1 changed files with 22 additions and 0 deletions
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man7/system_data_types.7
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@ -151,6 +151,28 @@ See also the
.I float_t
type in this page.
.RE
.\"------------------------------------- fd_set -----------------------/
.TP
.I fd_set
.RS
Include:
.IR <sys/select.h> .
Alternatively,
.IR <sys/time.h> .
.PP
A structure type that can represent a set of file descriptors.
According to POSIX,
the maximum number of file descriptors in an
.I fd_set
structure is the value of the macro
.BR FD_SETSIZE .
.PP
Conforming to:
POSIX.1-2001 and later.
.PP
See also:
.BR select (2)
.RE
.\"------------------------------------- fenv_t -----------------------/
.TP
.I fenv_t