langinfo.h(1) language information constants

SYNOPSIS

#include <langinfo.h>

DESCRIPTION

The <langinfo.h> header contains the constants used to identify items of langinfo data (see nl_langinfo()). The type of the constant, nl_item, shall be defined as described in <nl_types.h> .

The following constants shall be defined. The entries under Category indicate in which setlocale() category each item is defined.

ConstantCategory     Meaning   
CODESETLC_CTYPE     Codeset name.   
D_T_FMTLC_TIME     String for formatting date and time.   
D_FMTLC_TIME     Date format string.   
T_FMTLC_TIME     Time format string.   
T_FMT_AMPMLC_TIME     a.m. or p.m. time format string.   
AM_STRLC_TIME     Ante-meridiem affix.   
PM_STRLC_TIME     Post-meridiem affix.   
DAY_1LC_TIME     Name of the first day of the week (for example, Sunday).   
DAY_2LC_TIME     Name of the second day of the week (for example, Monday).   
DAY_3LC_TIME     Name of the third day of the week (for example, Tuesday).   
DAY_4LC_TIME     Name of the fourth day of the week   
      (for example, Wednesday).   
DAY_5LC_TIME     Name of the fifth day of the week (for example, Thursday).   
DAY_6LC_TIME     Name of the sixth day of the week (for example, Friday).   
DAY_7LC_TIME     Name of the seventh day of the week   
      (for example, Saturday).   
ABDAY_1LC_TIME     Abbreviated name of the first day of the week.   
ABDAY_2LC_TIME     Abbreviated name of the second day of the week.   
ABDAY_3LC_TIME     Abbreviated name of the third day of the week.   
ABDAY_4LC_TIME     Abbreviated name of the fourth day of the week.   
ABDAY_5LC_TIME     Abbreviated name of the fifth day of the week.   
ABDAY_6LC_TIME     Abbreviated name of the sixth day of the week.   
ABDAY_7LC_TIME     Abbreviated name of the seventh day of the week.   
MON_1LC_TIME     Name of the first month of the year.   
MON_2LC_TIME     Name of the second month.   
MON_3LC_TIME     Name of the third month.   
MON_4LC_TIME     Name of the fourth month.   
MON_5LC_TIME     Name of the fifth month.   
MON_6LC_TIME     Name of the sixth month.   
MON_7LC_TIME     Name of the seventh month.   
MON_8LC_TIME     Name of the eighth month.   
MON_9LC_TIME     Name of the ninth month.   
MON_10LC_TIME     Name of the tenth month.   
MON_11LC_TIME     Name of the eleventh month.   
MON_12LC_TIME     Name of the twelfth month.   
ABMON_1LC_TIME     Abbreviated name of the first month.   
ABMON_2LC_TIME     Abbreviated name of the second month.   
ABMON_3LC_TIME     Abbreviated name of the third month.   
ABMON_4LC_TIME     Abbreviated name of the fourth month.   
ABMON_5LC_TIME     Abbreviated name of the fifth month.   
ABMON_6LC_TIME     Abbreviated name of the sixth month.   
ABMON_7LC_TIME     Abbreviated name of the seventh month.   
ABMON_8LC_TIME     Abbreviated name of the eighth month.   
ABMON_9LC_TIME     Abbreviated name of the ninth month.   
ABMON_10LC_TIME     Abbreviated name of the tenth month.   
ABMON_11LC_TIME     Abbreviated name of the eleventh month.   
ABMON_12LC_TIME     Abbreviated name of the twelfth month.   
ERALC_TIME     Era description segments.   
ERA_D_FMTLC_TIME     Era date format string.   
ERA_D_T_FMTLC_TIME     Era date and time format string.   
ERA_T_FMTLC_TIME     Era time format string.   
ALT_DIGITSLC_TIME     Alternative symbols for digits.   
RADIXCHARLC_NUMERIC     Radix character.   
THOUSEPLC_NUMERIC     Separator for thousands.   
YESEXPRLC_MESSAGES     Affirmative response expression.   
NOEXPRLC_MESSAGES     Negative response expression.   
CRNCYSTRLC_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) 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);

Inclusion of the <langinfo.h> header may also make visible all symbols from <nl_types.h>.

The following sections are informative.

APPLICATION USAGE

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.

RATIONALE

None.

FUTURE DIRECTIONS

None.

COPYRIGHT

Portions of this text are reprinted and reproduced in electronic form from IEEE Std 1003.1, 2003 Edition, Standard for Information Technology -- Portable Operating System Interface (POSIX), The Open Group Base Specifications Issue 6, Copyright (C) 2001-2003 by the Institute of Electrical and Electronics Engineers, Inc and The Open Group. 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.opengroup.org/unix/online.html .