'\" et

.TH langinfo.h "0P" 2013 "IEEE/The Open Group" "POSIX Programmer's Manual"

.SH PROLOG

This manual page is part of the POSIX Programmer's Manual.

The Linux implementation of this interface may differ (consult

the corresponding Linux manual page for details of Linux behavior),

or the interface may not be implemented on Linux.

.SH NAME

langinfo.h

\(em language information constants

.SH SYNOPSIS

.LP

.nf

#include <langinfo.h>

.fi

.SH DESCRIPTION

The

.IR <langinfo.h> 

header shall define the symbolic constants used to identify items of

.IR langinfo

data (see

\fInl_langinfo\fR()).

.P

The

.IR <langinfo.h> 

header shall define the

.BR locale_t

type as described in

.IR <locale.h> .

.P

The

.IR <langinfo.h> 

header shall define the

.BR nl_item

type as described in

.IR <nl_types.h> .

.P

The

.IR <langinfo.h> 

header shall define the following symbolic constants with type

.BR nl_item .

The entries under

.BR Category

indicate in which

\fIsetlocale\fR()

category each item is defined.

.TS

box center tab(!);

cB | cB | cB

l1 | lI1 | l.

Constant!Category!Meaning

_

CODESET!LC_CTYPE!Codeset name.

D_T_FMT!LC_TIME!String for formatting date and time.

D_FMT!LC_TIME!Date format string.

T_FMT!LC_TIME!Time format string.

T_FMT_AMPM!LC_TIME!a.m. or p.m. time format string.

AM_STR!LC_TIME!Ante-meridiem affix.

PM_STR!LC_TIME!Post-meridiem affix.

DAY_1!LC_TIME!Name of the first day of the week (for example, Sunday).

DAY_2!LC_TIME!Name of the second day of the week (for example, Monday).

DAY_3!LC_TIME!Name of the third day of the week (for example, Tuesday).

DAY_4!LC_TIME!Name of the fourth day of the week

 !!(for example, Wednesday).

DAY_5!LC_TIME!Name of the fifth day of the week (for example, Thursday).

DAY_6!LC_TIME!Name of the sixth day of the week (for example, Friday).

DAY_7!LC_TIME!Name of the seventh day of the week

 !!(for example, Saturday).

ABDAY_1!LC_TIME!Abbreviated name of the first day of the week.

ABDAY_2!LC_TIME!Abbreviated name of the second day of the week.

ABDAY_3!LC_TIME!Abbreviated name of the third day of the week.

ABDAY_4!LC_TIME!Abbreviated name of the fourth day of the week.

ABDAY_5!LC_TIME!Abbreviated name of the fifth day of the week.

ABDAY_6!LC_TIME!Abbreviated name of the sixth day of the week.

ABDAY_7!LC_TIME!Abbreviated name of the seventh day of the week.

MON_1!LC_TIME!Name of the first month of the year.

MON_2!LC_TIME!Name of the second month.

MON_3!LC_TIME!Name of the third month.

MON_4!LC_TIME!Name of the fourth month.

MON_5!LC_TIME!Name of the fifth month.

MON_6!LC_TIME!Name of the sixth month.

MON_7!LC_TIME!Name of the seventh month.

MON_8!LC_TIME!Name of the eighth month.

MON_9!LC_TIME!Name of the ninth month.

MON_10!LC_TIME!Name of the tenth month.

MON_11!LC_TIME!Name of the eleventh month.

MON_12!LC_TIME!Name of the twelfth month.

ABMON_1!LC_TIME!Abbreviated name of the first month.

ABMON_2!LC_TIME!Abbreviated name of the second month.

ABMON_3!LC_TIME!Abbreviated name of the third month.

ABMON_4!LC_TIME!Abbreviated name of the fourth month.

ABMON_5!LC_TIME!Abbreviated name of the fifth month.

ABMON_6!LC_TIME!Abbreviated name of the sixth month.

ABMON_7!LC_TIME!Abbreviated name of the seventh month.

ABMON_8!LC_TIME!Abbreviated name of the eighth month.

ABMON_9!LC_TIME!Abbreviated name of the ninth month.

ABMON_10!LC_TIME!Abbreviated name of the tenth month.

ABMON_11!LC_TIME!Abbreviated name of the eleventh month.

ABMON_12!LC_TIME!Abbreviated name of the twelfth month.

ERA!LC_TIME!Era description segments.

ERA_D_FMT!LC_TIME!Era date format string.

ERA_D_T_FMT!LC_TIME!Era date and time format string.

ERA_T_FMT!LC_TIME!Era time format string.

ALT_DIGITS!LC_TIME!Alternative symbols for digits.

RADIXCHAR!LC_NUMERIC!Radix character.

THOUSEP!LC_NUMERIC!Separator for thousands.

YESEXPR!LC_MESSAGES!Affirmative response expression.

NOEXPR!LC_MESSAGES!Negative response expression.

CRNCYSTR!LC_MONETARY!T{

Local currency symbol, preceded by

.BR '\(mi' 

if the symbol should appear before the value,

.BR '+' 

if the symbol should appear after the value, or

.BR '.' 

if the symbol should replace the radix character. If the local

currency symbol is the empty string, implementations may return

the empty string (\c

.BR \(dq\&\(dq ).

T}

.TE

.P

If the locale's values for

.BR p_cs_precedes

and

.BR n_cs_precedes

do not match, the value of

.IR nl_langinfo (CRNCYSTR)

and

.IR nl_langinfo_l (CRNCYSTR,loc)

is unspecified.

.P

The following shall be declared as a function and may also be defined

as a macro. A function prototype shall be provided.

.sp

.RS 4

.nf

\fB

char *nl_langinfo(nl_item);

char *nl_langinfo_l(nl_item, locale_t);

.fi \fR

.P

.RE

.P

Inclusion of the

.IR <langinfo.h> 

header may also make visible all symbols from

.IR <nl_types.h> .

.LP

.IR "The following sections are informative."

.SH "APPLICATION USAGE"

Wherever possible, users are advised to use functions compatible with

those in the ISO\ C standard to access items of

.IR langinfo

data. In particular, the

\fIstrftime\fR()

function should be used to access date and time information defined in

category

.IR LC_TIME .

The

\fIlocaleconv\fR()

function should be used to access information corresponding to

RADIXCHAR, THOUSEP, and CRNCYSTR.

.SH RATIONALE

None.

.SH "FUTURE DIRECTIONS"

None.

.SH "SEE ALSO"

.IR "Chapter 7" ", " "Locale",

.IR "\fB<locale.h>\fP",

.IR "\fB<nl_types.h>\fP"

.P

The System Interfaces volume of POSIX.1\(hy2008,

.IR "\fInl_langinfo\fR\^(\|)",

.IR "\fIlocaleconv\fR\^(\|)",

.IR "\fIstrfmon\fR\^(\|)",

.IR "\fIstrftime\fR\^(\|)"

.SH COPYRIGHT

Portions of this text are reprinted and reproduced in electronic form

from IEEE Std 1003.1, 2013 Edition, Standard for Information Technology

-- Portable Operating System Interface (POSIX), The Open Group Base

Specifications Issue 7, Copyright (C) 2013 by the Institute of

Electrical and Electronics Engineers, Inc and The Open Group.

(This is POSIX.1-2008 with the 2013 Technical Corrigendum 1 applied.) In the

event of any discrepancy between this version and the original IEEE and

The Open Group Standard, the original IEEE and The Open Group Standard

is the referee document. The original Standard can be obtained online at

http://www.unix.org/online.html .

Any typographical or formatting errors that appear

in this page are most likely

to have been introduced during the conversion of the source files to

man page format. To report such errors, see

https://www.kernel.org/doc/man-pages/reporting_bugs.html .