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#include <langinfo.h>
Calls to setlocale() with a category corresponding to the category of item, or to the category LC_ALL, may overwrite the buffer pointed to by the return value.
The manifest constant names and values of item are defined in <langinfo.h>.
The following standard constants are recognized:
Constant | Category | Description |
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 |
DAY_2 | LC_TIME | name of the second day of the week |
DAY_3 | LC_TIME | name of the third day of the week |
DAY_4 | LC_TIME | name of the fourth day of the week |
DAY_5 | LC_TIME | name of the fifth day of the week |
DAY_6 | LC_TIME | name of the sixth day of the week |
DAY_7 | LC_TIME | name of the seventh day of the week |
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 extended regularexpression |
NOEXPR | LC_MESSAGES | negative response extended regular expression |
CRNCYSTR | LC_MONETARY | local currency symbol, preceded by '-' if thesymbol 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 ("") |
The following non-standard FreeBSD extensions are recognized:
Constant | Category | Description |
D_MD_ORDER | LC_TIME | month/day order |
ALTMON_1 | LC_TIME | standalone name of the first month |
ALTMON_2 | LC_TIME | standalone name of the second month |
ALTMON_3 | LC_TIME | standalone name of the third month |
ALTMON_4 | LC_TIME | standalone name of the fourth month |
ALTMON_5 | LC_TIME | standalone name of the fifth month |
ALTMON_6 | LC_TIME | standalone name of the sixth month |
ALTMON_7 | LC_TIME | standalone name of the seventh month |
ALTMON_8 | LC_TIME | standalone name of the eighth month |
ALTMON_9 | LC_TIME | standalone name of the ninth month |
ALTMON_10 | LC_TIME | standalone name of the tenth month |
ALTMON_11 | LC_TIME | standalone name of the eleventh month |
ALTMON_12 | LC_TIME | standalone name of the twelfth month |
YESSTR | LC_MESSAGES | affirmative response string |
NOSTR | LC_MESSAGES | negative response string |
nl_langinfo(ABDAY_1)
would return a pointer to the string "Dom" if the identified language was Portuguese, and "Sun" if the identified language was English.
NL_LANGINFO (3) | December 14, 2020 |
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