<s>
The	O
C	B-Language
POSIX	I-Language
library	I-Language
is	O
a	O
specification	O
of	O
a	O
C	B-Language
standard	I-Language
library	I-Language
for	O
POSIX	O
systems	O
.	O
</s>
<s>
Header	O
file	O
Description	O
First	O
released	O
Asynchronous	B-Architecture
input	I-Architecture
and	I-Architecture
output	I-Architecture
Issue	O
5	O
Functions	O
for	O
manipulating	O
numeric	O
IP	B-Protocol
addresses	I-Protocol
(	O
part	O
of	O
Berkeley	B-Protocol
sockets	I-Protocol
)	O
Issue	O
6	O
Verify	O
assumptions	O
Issue	O
1	O
Complex	O
Arithmetic	O
,	O
see	O
C	B-Language
mathematical	I-Language
functions	I-Language
Issue	O
6	O
Magic	O
numbers	O
for	O
the	O
cpio	B-Application
archive	O
format	O
Issue	O
3Character	O
typesIssue	O
1	O
Allows	O
the	O
opening	O
and	O
listing	O
of	O
directories	B-Application
Issue	O
2	O
Dynamic	B-Application
linking	I-Application
Issue	O
5	O
Retrieving	O
Error	O
Number	O
Issue	O
1	O
File	O
opening	O
,	O
locking	B-Application
and	O
other	O
operations	O
Issue	O
1	O
Floating-Point	O
Environment	O
(	O
FPE	O
)	O
,	O
see	O
C	B-Language
mathematical	I-Language
functions	I-Language
Issue	O
6	O
Floating-point	O
types	O
,	O
see	O
C	B-Language
data	I-Language
types	I-Language
Issue	O
4	O
Message	O
display	O
structures	O
Issue	O
4	O
Filename	O
matching	O
Issue	O
4	O
File	O
tree	O
traversal	O
Issue	O
1	O
Pathname	O
"	B-Language
globbing	I-Language
"	I-Language
(	O
pattern-matching	O
)	O
Issue	O
4	O
User	O
group	B-Application
information	O
and	O
control	O
Issue	O
1	O
Codeset	B-General_Concept
conversion	O
facility	O
Issue	O
4	O
Fixed	O
sized	O
integer	O
types	O
,	O
see	O
C	B-Language
data	I-Language
types	I-Language
Issue	O
5	O
Alternative	O
spellings	O
,	O
see	O
C	B-Language
alternative	I-Language
tokens	I-Language
Issue	O
5	O
Language	O
information	O
constants	O
–	O
builds	O
on	O
C	B-Language
localization	I-Language
functions	I-Language
Issue	O
2	O
Pathname	O
manipulation	O
Issue	O
4	O
Implementation-defined	O
constants	O
,	O
see	O
C	B-Language
data	I-Language
types	I-Language
Issue	O
1	O
Category	O
macros	O
,	O
see	O
C	B-Language
localization	I-Language
functions	I-Language
Issue	O
3	O
Mathematical	O
declarations	O
,	O
see	O
C	B-Language
mathematical	I-Language
functions	I-Language
Issue	O
1	O
String	O
formatting	O
of	O
monetary	O
units	O
Issue	O
4	O
Message	B-Operating_System
queue	I-Operating_System
Issue	O
5	O
NDBM	O
database	O
operations	O
Issue	O
4	O
Listing	O
of	O
local	O
network	O
interfaces	O
Issue	O
6	O
Translating	O
protocol	O
and	O
host	O
names	O
into	O
numeric	O
addresses	O
(	O
part	O
of	O
Berkeley	B-Protocol
sockets	I-Protocol
)	O
Issue	O
6	O
Defines	O
Internet	O
protocol	O
and	O
address	O
family	O
(	O
part	O
of	O
Berkeley	B-Protocol
sockets	I-Protocol
)	O
Issue	O
6	O
Additional	O
TCP	B-Protocol
control	O
options	O
(	O
part	O
of	O
Berkeley	B-Protocol
sockets	I-Protocol
)	O
Issue	O
6	O
Localization	O
message	O
catalog	O
functions	O
Issue	O
2	O
Asynchronous	B-Architecture
file	I-Architecture
descriptor	I-Architecture
multiplexing	I-Architecture
Issue	O
4	O
Defines	O
an	O
API	O
for	O
creating	O
and	O
manipulating	O
POSIX	B-Operating_System
threads	I-Operating_System
Issue	O
5	O
passwd	O
(	O
user	O
information	O
)	O
access	O
and	O
control	O
Issue	O
1	O
Regular	B-Language
expression	I-Language
matching	O
Issue	O
4	O
Execution	O
scheduling	O
Issue	O
5	O
Search	O
tables	O
Issue	O
1	O
POSIX	O
semaphores	B-Operating_System
Issue	O
5	O
Stack	O
environment	O
declarations	O
Issue	O
1	O
Signals	O
,	O
see	O
C	B-Language
signal	I-Language
handling	I-Language
Issue	O
1	O
Process	O
spawning	B-Language
Issue	O
6	O
Handle	O
Variable	O
Argument	O
List	O
Issue	O
4	O
Boolean	O
type	O
and	O
values	O
,	O
see	O
C	B-Language
data	I-Language
types	I-Language
Issue	O
6	O
Standard	O
type	O
definitions	O
,	O
see	O
C	B-Language
data	I-Language
types	I-Language
Issue	O
4	O
Integer	O
types	O
,	O
see	O
C	B-Language
data	I-Language
types	I-Language
Issue	O
6	O
Standard	O
buffered	O
input/output	O
,	O
see	O
C	B-Language
file	I-Language
input/output	I-Language
Issue	O
1	O
Standard	O
library	O
definitions	O
,	O
see	O
C	B-Language
standard	I-Language
library	I-Language
Issue	O
3	O
Several	O
String	O
Operations	O
,	O
see	O
C	B-Language
string	I-Language
handling	I-Language
Issue	O
1	O
Case-insensitive	O
string	O
comparisons	O
Issue	O
4	O
Stream	O
manipulation	O
,	O
including	O
ioctl	B-Operating_System
Issue	O
4	O
Inter-process	B-Operating_System
communication	I-Operating_System
(	O
IPC	O
)	O
Issue	O
2	O
Memory	O
management	O
,	O
including	O
POSIX	O
shared	B-Operating_System
memory	I-Operating_System
and	O
memory	B-General_Concept
mapped	I-General_Concept
files	I-General_Concept
Issue	O
4	O
POSIX	O
message	B-Operating_System
queues	I-Operating_System
Issue	O
2	O
Resource	O
usage	O
,	O
priorities	O
,	O
and	O
limiting	O
Issue	O
4	O
Synchronous	B-Language
I/O	I-Language
multiplexing	I-Language
Issue	O
6	O
XSI	O
(	O
SysV	B-Operating_System
style	O
)	O
semaphores	B-Operating_System
Issue	O
2	O
XSI	O
(	O
SysV	B-Operating_System
style	O
)	O
shared	B-Operating_System
memory	I-Operating_System
Issue	O
2	O
Main	O
Berkeley	B-Protocol
sockets	I-Protocol
header	O
Issue	O
6	O
File	O
information	O
(	O
stat	B-Language
et	O
al	O
.	O
)	O
</s>
