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glibc/locale/langinfo.h
Carlos O'Donell 87701a58e2 strcoll: Remove incorrect STRDIFF-based optimization (Bug 18589). 
The optimization introduced in commit
f13c2a8dff, causes regressions in
sorting for languages that have digraphs that change sort order, like
cs_CZ which sorts ch between h and i.

My analysis shows the fast-forwarding optimization in STRCOLL advances
through a digraph while possibly stopping in the middle which results
in a subsequent skipping of the digraph and incorrect sorting. The
optimization is incorrect as implemented and because of that I'm
removing it for 2.23, and I will also commit this fix for 2.22 where
it was originally introduced.

This patch reverts the optimization, introduces a new bug-strcoll2.c
regression test that tests both cs_CZ.UTF-8 and da_DK.ISO-8859-1 and
ensures they sort one digraph each correctly. The optimization can't be
applied without regressing this test.

Checked on x86_64, bug-strcoll2.c fails without this patch and passes
after. This will also get a fix on 2.22 which has the same bug.
2015-10-08 16:41:45 -04:00

600 lines
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/* Access to locale-dependent parameters.
Copyright (C) 1995-2015 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
<http://www.gnu.org/licenses/>. */
#ifndef _LANGINFO_H
#define _LANGINFO_H 1
/* Get the type definition. */
#include <nl_types.h>
#include <bits/locale.h> /* Define the __LC_* category names. */
__BEGIN_DECLS
/* Construct an `nl_item' value for `nl_langinfo' from a locale category
(LC_*) and an item index within the category. Some code may depend on
the item values within a category increasing monotonically with the
indices. */
#define _NL_ITEM(category, index) (((category) << 16) | (index))
/* Extract the category and item index from a constructed `nl_item' value. */
#define _NL_ITEM_CATEGORY(item) ((int) (item) >> 16)
#define _NL_ITEM_INDEX(item) ((int) (item) & 0xffff)
/* Enumeration of locale items that can be queried with `nl_langinfo'. */
enum
{
/* LC_TIME category: date and time formatting. */
/* Abbreviated days of the week. */
ABDAY_1 = _NL_ITEM (__LC_TIME, 0), /* Sun */
#define ABDAY_1 ABDAY_1
ABDAY_2,
#define ABDAY_2 ABDAY_2
ABDAY_3,
#define ABDAY_3 ABDAY_3
ABDAY_4,
#define ABDAY_4 ABDAY_4
ABDAY_5,
#define ABDAY_5 ABDAY_5
ABDAY_6,
#define ABDAY_6 ABDAY_6
ABDAY_7,
#define ABDAY_7 ABDAY_7
/* Long-named days of the week. */
DAY_1, /* Sunday */
#define DAY_1 DAY_1
DAY_2, /* Monday */
#define DAY_2 DAY_2
DAY_3, /* Tuesday */
#define DAY_3 DAY_3
DAY_4, /* Wednesday */
#define DAY_4 DAY_4
DAY_5, /* Thursday */
#define DAY_5 DAY_5
DAY_6, /* Friday */
#define DAY_6 DAY_6
DAY_7, /* Saturday */
#define DAY_7 DAY_7
/* Abbreviated month names. */
ABMON_1, /* Jan */
#define ABMON_1 ABMON_1
ABMON_2,
#define ABMON_2 ABMON_2
ABMON_3,
#define ABMON_3 ABMON_3
ABMON_4,
#define ABMON_4 ABMON_4
ABMON_5,
#define ABMON_5 ABMON_5
ABMON_6,
#define ABMON_6 ABMON_6
ABMON_7,
#define ABMON_7 ABMON_7
ABMON_8,
#define ABMON_8 ABMON_8
ABMON_9,
#define ABMON_9 ABMON_9
ABMON_10,
#define ABMON_10 ABMON_10
ABMON_11,
#define ABMON_11 ABMON_11
ABMON_12,
#define ABMON_12 ABMON_12
/* Long month names. */
MON_1, /* January */
#define MON_1 MON_1
MON_2,
#define MON_2 MON_2
MON_3,
#define MON_3 MON_3
MON_4,
#define MON_4 MON_4
MON_5,
#define MON_5 MON_5
MON_6,
#define MON_6 MON_6
MON_7,
#define MON_7 MON_7
MON_8,
#define MON_8 MON_8
MON_9,
#define MON_9 MON_9
MON_10,
#define MON_10 MON_10
MON_11,
#define MON_11 MON_11
MON_12,
#define MON_12 MON_12
AM_STR, /* Ante meridiem string. */
#define AM_STR AM_STR
PM_STR, /* Post meridiem string. */
#define PM_STR PM_STR
D_T_FMT, /* Date and time format for strftime. */
#define D_T_FMT D_T_FMT
D_FMT, /* Date format for strftime. */
#define D_FMT D_FMT
T_FMT, /* Time format for strftime. */
#define T_FMT T_FMT
T_FMT_AMPM, /* 12-hour time format for strftime. */
#define T_FMT_AMPM T_FMT_AMPM
ERA, /* Alternate era. */
#define ERA ERA
__ERA_YEAR, /* Year in alternate era format. */
#ifdef __USE_GNU
# define ERA_YEAR __ERA_YEAR
#endif
ERA_D_FMT, /* Date in alternate era format. */
#define ERA_D_FMT ERA_D_FMT
ALT_DIGITS, /* Alternate symbols for digits. */
#define ALT_DIGITS ALT_DIGITS
ERA_D_T_FMT, /* Date and time in alternate era format. */
#define ERA_D_T_FMT ERA_D_T_FMT
ERA_T_FMT, /* Time in alternate era format. */
#define ERA_T_FMT ERA_T_FMT
_NL_TIME_ERA_NUM_ENTRIES, /* Number entries in the era arrays. */
_NL_TIME_ERA_ENTRIES, /* Structure with era entries in usable form.*/
_NL_WABDAY_1, /* Sun */
_NL_WABDAY_2,
_NL_WABDAY_3,
_NL_WABDAY_4,
_NL_WABDAY_5,
_NL_WABDAY_6,
_NL_WABDAY_7,
/* Long-named days of the week. */
_NL_WDAY_1, /* Sunday */
_NL_WDAY_2, /* Monday */
_NL_WDAY_3, /* Tuesday */
_NL_WDAY_4, /* Wednesday */
_NL_WDAY_5, /* Thursday */
_NL_WDAY_6, /* Friday */
_NL_WDAY_7, /* Saturday */
/* Abbreviated month names. */
_NL_WABMON_1, /* Jan */
_NL_WABMON_2,
_NL_WABMON_3,
_NL_WABMON_4,
_NL_WABMON_5,
_NL_WABMON_6,
_NL_WABMON_7,
_NL_WABMON_8,
_NL_WABMON_9,
_NL_WABMON_10,
_NL_WABMON_11,
_NL_WABMON_12,
/* Long month names. */
_NL_WMON_1, /* January */
_NL_WMON_2,
_NL_WMON_3,
_NL_WMON_4,
_NL_WMON_5,
_NL_WMON_6,
_NL_WMON_7,
_NL_WMON_8,
_NL_WMON_9,
_NL_WMON_10,
_NL_WMON_11,
_NL_WMON_12,
_NL_WAM_STR, /* Ante meridiem string. */
_NL_WPM_STR, /* Post meridiem string. */
_NL_WD_T_FMT, /* Date and time format for strftime. */
_NL_WD_FMT, /* Date format for strftime. */
_NL_WT_FMT, /* Time format for strftime. */
_NL_WT_FMT_AMPM, /* 12-hour time format for strftime. */
_NL_WERA_YEAR, /* Year in alternate era format. */
_NL_WERA_D_FMT, /* Date in alternate era format. */
_NL_WALT_DIGITS, /* Alternate symbols for digits. */
_NL_WERA_D_T_FMT, /* Date and time in alternate era format. */
_NL_WERA_T_FMT, /* Time in alternate era format. */
_NL_TIME_WEEK_NDAYS,
_NL_TIME_WEEK_1STDAY,
_NL_TIME_WEEK_1STWEEK,
_NL_TIME_FIRST_WEEKDAY,
_NL_TIME_FIRST_WORKDAY,
_NL_TIME_CAL_DIRECTION,
_NL_TIME_TIMEZONE,
_DATE_FMT, /* strftime format for date. */
#define _DATE_FMT _DATE_FMT
_NL_W_DATE_FMT,
_NL_TIME_CODESET,
_NL_NUM_LC_TIME, /* Number of indices in LC_TIME category. */
/* LC_COLLATE category: text sorting.
This information is accessed by the strcoll and strxfrm functions.
These `nl_langinfo' names are used only internally. */
_NL_COLLATE_NRULES = _NL_ITEM (__LC_COLLATE, 0),
_NL_COLLATE_RULESETS,
_NL_COLLATE_TABLEMB,
_NL_COLLATE_WEIGHTMB,
_NL_COLLATE_EXTRAMB,
_NL_COLLATE_INDIRECTMB,
_NL_COLLATE_GAP1,
_NL_COLLATE_GAP2,
_NL_COLLATE_GAP3,
_NL_COLLATE_TABLEWC,
_NL_COLLATE_WEIGHTWC,
_NL_COLLATE_EXTRAWC,
_NL_COLLATE_INDIRECTWC,
_NL_COLLATE_SYMB_HASH_SIZEMB,
_NL_COLLATE_SYMB_TABLEMB,
_NL_COLLATE_SYMB_EXTRAMB,
_NL_COLLATE_COLLSEQMB,
_NL_COLLATE_COLLSEQWC,
_NL_COLLATE_CODESET,
_NL_NUM_LC_COLLATE,
/* LC_CTYPE category: character classification.
This information is accessed by the functions in <ctype.h>.
These `nl_langinfo' names are used only internally. */
_NL_CTYPE_CLASS = _NL_ITEM (__LC_CTYPE, 0),
_NL_CTYPE_TOUPPER,
_NL_CTYPE_GAP1,
_NL_CTYPE_TOLOWER,
_NL_CTYPE_GAP2,
_NL_CTYPE_CLASS32,
_NL_CTYPE_GAP3,
_NL_CTYPE_GAP4,
_NL_CTYPE_GAP5,
_NL_CTYPE_GAP6,
_NL_CTYPE_CLASS_NAMES,
_NL_CTYPE_MAP_NAMES,
_NL_CTYPE_WIDTH,
_NL_CTYPE_MB_CUR_MAX,
_NL_CTYPE_CODESET_NAME,
CODESET = _NL_CTYPE_CODESET_NAME,
#define CODESET CODESET
_NL_CTYPE_TOUPPER32,
_NL_CTYPE_TOLOWER32,
_NL_CTYPE_CLASS_OFFSET,
_NL_CTYPE_MAP_OFFSET,
_NL_CTYPE_INDIGITS_MB_LEN,
_NL_CTYPE_INDIGITS0_MB,
_NL_CTYPE_INDIGITS1_MB,
_NL_CTYPE_INDIGITS2_MB,
_NL_CTYPE_INDIGITS3_MB,
_NL_CTYPE_INDIGITS4_MB,
_NL_CTYPE_INDIGITS5_MB,
_NL_CTYPE_INDIGITS6_MB,
_NL_CTYPE_INDIGITS7_MB,
_NL_CTYPE_INDIGITS8_MB,
_NL_CTYPE_INDIGITS9_MB,
_NL_CTYPE_INDIGITS_WC_LEN,
_NL_CTYPE_INDIGITS0_WC,
_NL_CTYPE_INDIGITS1_WC,
_NL_CTYPE_INDIGITS2_WC,
_NL_CTYPE_INDIGITS3_WC,
_NL_CTYPE_INDIGITS4_WC,
_NL_CTYPE_INDIGITS5_WC,
_NL_CTYPE_INDIGITS6_WC,
_NL_CTYPE_INDIGITS7_WC,
_NL_CTYPE_INDIGITS8_WC,
_NL_CTYPE_INDIGITS9_WC,
_NL_CTYPE_OUTDIGIT0_MB,
_NL_CTYPE_OUTDIGIT1_MB,
_NL_CTYPE_OUTDIGIT2_MB,
_NL_CTYPE_OUTDIGIT3_MB,
_NL_CTYPE_OUTDIGIT4_MB,
_NL_CTYPE_OUTDIGIT5_MB,
_NL_CTYPE_OUTDIGIT6_MB,
_NL_CTYPE_OUTDIGIT7_MB,
_NL_CTYPE_OUTDIGIT8_MB,
_NL_CTYPE_OUTDIGIT9_MB,
_NL_CTYPE_OUTDIGIT0_WC,
_NL_CTYPE_OUTDIGIT1_WC,
_NL_CTYPE_OUTDIGIT2_WC,
_NL_CTYPE_OUTDIGIT3_WC,
_NL_CTYPE_OUTDIGIT4_WC,
_NL_CTYPE_OUTDIGIT5_WC,
_NL_CTYPE_OUTDIGIT6_WC,
_NL_CTYPE_OUTDIGIT7_WC,
_NL_CTYPE_OUTDIGIT8_WC,
_NL_CTYPE_OUTDIGIT9_WC,
_NL_CTYPE_TRANSLIT_TAB_SIZE,
_NL_CTYPE_TRANSLIT_FROM_IDX,
_NL_CTYPE_TRANSLIT_FROM_TBL,
_NL_CTYPE_TRANSLIT_TO_IDX,
_NL_CTYPE_TRANSLIT_TO_TBL,
_NL_CTYPE_TRANSLIT_DEFAULT_MISSING_LEN,
_NL_CTYPE_TRANSLIT_DEFAULT_MISSING,
_NL_CTYPE_TRANSLIT_IGNORE_LEN,
_NL_CTYPE_TRANSLIT_IGNORE,
_NL_CTYPE_MAP_TO_NONASCII,
_NL_CTYPE_NONASCII_CASE,
_NL_CTYPE_EXTRA_MAP_1,
_NL_CTYPE_EXTRA_MAP_2,
_NL_CTYPE_EXTRA_MAP_3,
_NL_CTYPE_EXTRA_MAP_4,
_NL_CTYPE_EXTRA_MAP_5,
_NL_CTYPE_EXTRA_MAP_6,
_NL_CTYPE_EXTRA_MAP_7,
_NL_CTYPE_EXTRA_MAP_8,
_NL_CTYPE_EXTRA_MAP_9,
_NL_CTYPE_EXTRA_MAP_10,
_NL_CTYPE_EXTRA_MAP_11,
_NL_CTYPE_EXTRA_MAP_12,
_NL_CTYPE_EXTRA_MAP_13,
_NL_CTYPE_EXTRA_MAP_14,
_NL_NUM_LC_CTYPE,
/* LC_MONETARY category: formatting of monetary quantities.
These items each correspond to a member of `struct lconv',
defined in <locale.h>. */
__INT_CURR_SYMBOL = _NL_ITEM (__LC_MONETARY, 0),
#ifdef __USE_GNU
# define INT_CURR_SYMBOL __INT_CURR_SYMBOL
#endif
__CURRENCY_SYMBOL,
#ifdef __USE_GNU
# define CURRENCY_SYMBOL __CURRENCY_SYMBOL
#endif
__MON_DECIMAL_POINT,
#ifdef __USE_GNU
# define MON_DECIMAL_POINT __MON_DECIMAL_POINT
#endif
__MON_THOUSANDS_SEP,
#ifdef __USE_GNU
# define MON_THOUSANDS_SEP __MON_THOUSANDS_SEP
#endif
__MON_GROUPING,
#ifdef __USE_GNU
# define MON_GROUPING __MON_GROUPING
#endif
__POSITIVE_SIGN,
#ifdef __USE_GNU
# define POSITIVE_SIGN __POSITIVE_SIGN
#endif
__NEGATIVE_SIGN,
#ifdef __USE_GNU
# define NEGATIVE_SIGN __NEGATIVE_SIGN
#endif
__INT_FRAC_DIGITS,
#ifdef __USE_GNU
# define INT_FRAC_DIGITS __INT_FRAC_DIGITS
#endif
__FRAC_DIGITS,
#ifdef __USE_GNU
# define FRAC_DIGITS __FRAC_DIGITS
#endif
__P_CS_PRECEDES,
#ifdef __USE_GNU
# define P_CS_PRECEDES __P_CS_PRECEDES
#endif
__P_SEP_BY_SPACE,
#ifdef __USE_GNU
# define P_SEP_BY_SPACE __P_SEP_BY_SPACE
#endif
__N_CS_PRECEDES,
#ifdef __USE_GNU
# define N_CS_PRECEDES __N_CS_PRECEDES
#endif
__N_SEP_BY_SPACE,
#ifdef __USE_GNU
# define N_SEP_BY_SPACE __N_SEP_BY_SPACE
#endif
__P_SIGN_POSN,
#ifdef __USE_GNU
# define P_SIGN_POSN __P_SIGN_POSN
#endif
__N_SIGN_POSN,
#ifdef __USE_GNU
# define N_SIGN_POSN __N_SIGN_POSN
#endif
_NL_MONETARY_CRNCYSTR,
#define CRNCYSTR _NL_MONETARY_CRNCYSTR
__INT_P_CS_PRECEDES,
#ifdef __USE_GNU
# define INT_P_CS_PRECEDES __INT_P_CS_PRECEDES
#endif
__INT_P_SEP_BY_SPACE,
#ifdef __USE_GNU
# define INT_P_SEP_BY_SPACE __INT_P_SEP_BY_SPACE
#endif
__INT_N_CS_PRECEDES,
#ifdef __USE_GNU
# define INT_N_CS_PRECEDES __INT_N_CS_PRECEDES
#endif
__INT_N_SEP_BY_SPACE,
#ifdef __USE_GNU
# define INT_N_SEP_BY_SPACE __INT_N_SEP_BY_SPACE
#endif
__INT_P_SIGN_POSN,
#ifdef __USE_GNU
# define INT_P_SIGN_POSN __INT_P_SIGN_POSN
#endif
__INT_N_SIGN_POSN,
#ifdef __USE_GNU
# define INT_N_SIGN_POSN __INT_N_SIGN_POSN
#endif
_NL_MONETARY_DUO_INT_CURR_SYMBOL,
_NL_MONETARY_DUO_CURRENCY_SYMBOL,
_NL_MONETARY_DUO_INT_FRAC_DIGITS,
_NL_MONETARY_DUO_FRAC_DIGITS,
_NL_MONETARY_DUO_P_CS_PRECEDES,
_NL_MONETARY_DUO_P_SEP_BY_SPACE,
_NL_MONETARY_DUO_N_CS_PRECEDES,
_NL_MONETARY_DUO_N_SEP_BY_SPACE,
_NL_MONETARY_DUO_INT_P_CS_PRECEDES,
_NL_MONETARY_DUO_INT_P_SEP_BY_SPACE,
_NL_MONETARY_DUO_INT_N_CS_PRECEDES,
_NL_MONETARY_DUO_INT_N_SEP_BY_SPACE,
_NL_MONETARY_DUO_P_SIGN_POSN,
_NL_MONETARY_DUO_N_SIGN_POSN,
_NL_MONETARY_DUO_INT_P_SIGN_POSN,
_NL_MONETARY_DUO_INT_N_SIGN_POSN,
_NL_MONETARY_UNO_VALID_FROM,
_NL_MONETARY_UNO_VALID_TO,
_NL_MONETARY_DUO_VALID_FROM,
_NL_MONETARY_DUO_VALID_TO,
_NL_MONETARY_CONVERSION_RATE,
_NL_MONETARY_DECIMAL_POINT_WC,
_NL_MONETARY_THOUSANDS_SEP_WC,
_NL_MONETARY_CODESET,
_NL_NUM_LC_MONETARY,
/* LC_NUMERIC category: formatting of numbers.
These also correspond to members of `struct lconv'; see <locale.h>. */
__DECIMAL_POINT = _NL_ITEM (__LC_NUMERIC, 0),
#ifdef __USE_GNU
# define DECIMAL_POINT __DECIMAL_POINT
#endif
RADIXCHAR = __DECIMAL_POINT,
#define RADIXCHAR RADIXCHAR
__THOUSANDS_SEP,
#ifdef __USE_GNU
# define THOUSANDS_SEP __THOUSANDS_SEP
#endif
THOUSEP = __THOUSANDS_SEP,
#define THOUSEP THOUSEP
__GROUPING,
#ifdef __USE_GNU
# define GROUPING __GROUPING
#endif
_NL_NUMERIC_DECIMAL_POINT_WC,
_NL_NUMERIC_THOUSANDS_SEP_WC,
_NL_NUMERIC_CODESET,
_NL_NUM_LC_NUMERIC,
__YESEXPR = _NL_ITEM (__LC_MESSAGES, 0), /* Regex matching ``yes'' input. */
#define YESEXPR __YESEXPR
__NOEXPR, /* Regex matching ``no'' input. */
#define NOEXPR __NOEXPR
__YESSTR, /* Output string for ``yes''. */
#if defined __USE_GNU || (defined __USE_XOPEN && !defined __USE_XOPEN2K)
# define YESSTR __YESSTR
#endif
__NOSTR, /* Output string for ``no''. */
#if defined __USE_GNU || (defined __USE_XOPEN && !defined __USE_XOPEN2K)
# define NOSTR __NOSTR
#endif
_NL_MESSAGES_CODESET,
_NL_NUM_LC_MESSAGES,
_NL_PAPER_HEIGHT = _NL_ITEM (__LC_PAPER, 0),
_NL_PAPER_WIDTH,
_NL_PAPER_CODESET,
_NL_NUM_LC_PAPER,
_NL_NAME_NAME_FMT = _NL_ITEM (__LC_NAME, 0),
_NL_NAME_NAME_GEN,
_NL_NAME_NAME_MR,
_NL_NAME_NAME_MRS,
_NL_NAME_NAME_MISS,
_NL_NAME_NAME_MS,
_NL_NAME_CODESET,
_NL_NUM_LC_NAME,
_NL_ADDRESS_POSTAL_FMT = _NL_ITEM (__LC_ADDRESS, 0),
_NL_ADDRESS_COUNTRY_NAME,
_NL_ADDRESS_COUNTRY_POST,
_NL_ADDRESS_COUNTRY_AB2,
_NL_ADDRESS_COUNTRY_AB3,
_NL_ADDRESS_COUNTRY_CAR,
_NL_ADDRESS_COUNTRY_NUM,
_NL_ADDRESS_COUNTRY_ISBN,
_NL_ADDRESS_LANG_NAME,
_NL_ADDRESS_LANG_AB,
_NL_ADDRESS_LANG_TERM,
_NL_ADDRESS_LANG_LIB,
_NL_ADDRESS_CODESET,
_NL_NUM_LC_ADDRESS,
_NL_TELEPHONE_TEL_INT_FMT = _NL_ITEM (__LC_TELEPHONE, 0),
_NL_TELEPHONE_TEL_DOM_FMT,
_NL_TELEPHONE_INT_SELECT,
_NL_TELEPHONE_INT_PREFIX,
_NL_TELEPHONE_CODESET,
_NL_NUM_LC_TELEPHONE,
_NL_MEASUREMENT_MEASUREMENT = _NL_ITEM (__LC_MEASUREMENT, 0),
_NL_MEASUREMENT_CODESET,
_NL_NUM_LC_MEASUREMENT,
_NL_IDENTIFICATION_TITLE = _NL_ITEM (__LC_IDENTIFICATION, 0),
_NL_IDENTIFICATION_SOURCE,
_NL_IDENTIFICATION_ADDRESS,
_NL_IDENTIFICATION_CONTACT,
_NL_IDENTIFICATION_EMAIL,
_NL_IDENTIFICATION_TEL,
_NL_IDENTIFICATION_FAX,
_NL_IDENTIFICATION_LANGUAGE,
_NL_IDENTIFICATION_TERRITORY,
_NL_IDENTIFICATION_AUDIENCE,
_NL_IDENTIFICATION_APPLICATION,
_NL_IDENTIFICATION_ABBREVIATION,
_NL_IDENTIFICATION_REVISION,
_NL_IDENTIFICATION_DATE,
_NL_IDENTIFICATION_CATEGORY,
_NL_IDENTIFICATION_CODESET,
_NL_NUM_LC_IDENTIFICATION,
/* This marks the highest value used. */
_NL_NUM
};
/* This macro produces an item you can pass to `nl_langinfo' or
`nl_langinfo_l' to get the name of the locale in use for CATEGORY. */
#define _NL_LOCALE_NAME(category) _NL_ITEM ((category), \
_NL_ITEM_INDEX (-1))
#ifdef __USE_GNU
# define NL_LOCALE_NAME(category) _NL_LOCALE_NAME (category)
#endif
/* Return the current locale's value for ITEM.
If ITEM is invalid, an empty string is returned.
The string returned will not change until `setlocale' is called;
it is usually in read-only memory and cannot be modified. */
extern char *nl_langinfo (nl_item __item) __THROW;
#ifdef __USE_XOPEN2K
/* This interface is for the extended locale model. See <locale.h> for
more information. */
/* Get locale datatype definition. */
# include <xlocale.h>
/* Just like nl_langinfo but get the information from the locale object L. */
extern char *nl_langinfo_l (nl_item __item, __locale_t __l);
#endif
__END_DECLS
#endif /* langinfo.h */
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