1.\" Copyright (c) 2001 Alexey Zelkin <phantom@FreeBSD.org>
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25.\" $FreeBSD: src/lib/libc/locale/nl_langinfo.3,v 1.4 2002/04/13 04:25:56 dd Exp $
26.\"
27.Dd May 3, 2001
28.Dt NL_LANGINFO 3
29.Os
30.Sh NAME
31.Nm nl_langinfo
32.Nd language information
33.Sh LIBRARY
34.Lb libc
35.Sh SYNOPSIS
36.In langinfo.h
37.Ft char *
38.Fn nl_langinfo "nl_item item"
39.Sh DESCRIPTION
40The
41.Fn nl_langinfo
42function returns a pointer to a string containing information relevant to
43the particular language or cultural area defined in the program's locale.
44The manifest constant names and values of
45.Fa item
46are defined in
47.Aq Pa langinfo.h .
48.Pp
49Calls to
50.Fn setlocale
51with a category corresponding to the category of
52.Fa item ,
53or to the
54category
55.Dv LC_ALL ,
56may overwrite buffer pointed by the return value.
57.Sh EXAMPLES
58For example:
59.Pp
60.Dl nl_langinfo(ABDAY_1)
61.Pp
62would return a pointer to the string
63.Qq Li Dom
64if the identified language was
65Portuguese, and
66.Qq Li Sun
67if the identified language was English.
68.Sh RETURN VALUES
69In a locale where langinfo data is not defined,
70.Fn nl_langinfo
71returns a pointer to the corresponding string in the
72.Tn POSIX
73locale.
74In all locales,
75.Fn nl_langinfo
76returns a pointer to an empty string if
77.Fa item
78contains an invalid setting.
79.Sh SEE ALSO
80.Xr setlocale 3
81.Sh STANDARDS
82The
83.Fn nl_langinfo
84function conforms to
85.St -susv2 .
86.Sh HISTORY
87The
88.Fn nl_langinfo
89function first appeared in
90.Fx 4.6 .
91