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langinfo.h(0P) POSIX Programmer's Manual langinfo.h(0P)
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.
langinfo.h — language information constants
#include <langinfo.h>
The <langinfo.h> header shall define the symbolic constants used to
identify items of langinfo data (see nl_langinfo()).
The <langinfo.h> header shall define the locale_t type as described
in <locale.h>.
The <langinfo.h> header shall define the nl_item type as described in
<nl_types.h>.
The <langinfo.h> header shall define the following symbolic constants
with type nl_item. The entries under Category indicate in which
setlocale() category each item is defined.
┌───────────┬───────────┬───────────────────────────────────────────────────────────┐
│ 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│Local currency symbol, preceded by '−' if the symbol │
│ │ │should appear before the value, '+' if the symbol should │
│ │ │appear after the value, or '.' if the symbol should │
│ │ │replace the radix character. If the local currency symbol │
│ │ │is the empty string, implementations may return the empty │
│ │ │string (""). │
└───────────┴───────────┴───────────────────────────────────────────────────────────┘
If the locale's values for p_cs_precedes and n_cs_precedes do not
match, the value of nl_langinfo(CRNCYSTR) and
nl_langinfo_l(CRNCYSTR,loc) is unspecified.
The following shall be declared as a function and may also be defined
as a macro. A function prototype shall be provided.
char *nl_langinfo(nl_item);
char *nl_langinfo_l(nl_item, locale_t);
Inclusion of the <langinfo.h> header may also make visible all
symbols from <nl_types.h>.
The following sections are informative.
Wherever possible, users are advised to use functions compatible with
those in the ISO C standard to access items of langinfo data. In
particular, the strftime() function should be used to access date and
time information defined in category LC_TIME. The localeconv()
function should be used to access information corresponding to
RADIXCHAR, THOUSEP, and CRNCYSTR.
None.
None.
Chapter 7, Locale, locale.h(0p), nl_types.h(0p)
The System Interfaces volume of POSIX.1‐2008, nl_langinfo(3p),
localeconv(3p), strfmon(3p), strftime(3p)
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 .
IEEE/The Open Group 2013 langinfo.h(0P)
Pages that refer to this page: nl_types.h(0p), fscanf(3p), localeconv(3p), nl_langinfo(3p), setlocale(3p)