nl_langinfo(3)

1NL_LANGINFO(3)             Linux Programmer's Manual            NL_LANGINFO(3)
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NAME

6       nl_langinfo - query language and locale information
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SYNOPSIS

9       #include <langinfo.h>
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11       char *nl_langinfo(nl_item item);
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DESCRIPTION

14       The  nl_langinfo()  function provides access to locale information in a
15       more flexible way than localeconv(3) does.  Individual  and  additional
16       elements of the locale categories can be queried.
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18       Examples  for  the  locale elements that can be specified in item using
19       the constants defined in <langinfo.h> are:
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22       CODESET (LC_CTYPE)
23              Return a string with the name of the character encoding used  in
24              the   selected   locale,   such  as  "UTF-8",  "ISO-8859-1",  or
25              "ANSI_X3.4-1968" (better known as US-ASCII). This  is  the  same
26              string that you get with "locale charmap". For a list of charac‐
27              ter encoding names, try "locale -m", cf. locale(1).
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30       D_T_FMT (LC_TIME)
31              Return a string that can be used as a format  string  for  strf‐
32              time(3) to represent time and date in a locale-specific way.
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35       D_FMT (LC_TIME)
36              Return  a  string  that can be used as a format string for strf‐
37              time(3) to represent a date in a locale-specific way.
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40       T_FMT (LC_TIME)
41              Return a string that can be used as a format  string  for  strf‐
42              time(3) to represent a time in a locale-specific way.
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45       DAY_{1–7} (LC_TIME)
46              Return  name of the n-th day of the week. [Warning: this follows
47              the US convention DAY_1 = Sunday, not the international  conven‐
48              tion (ISO 8601) that Monday is the first day of the week.]
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51       ABDAY_{1–7} (LC_TIME)
52              Return abbreviated name of the n-th day of the week.
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55       MON_{1–12} (LC_TIME)
56              Return name of the n-th month.
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59       ABMON_{1–12} (LC_TIME)
60              Return abbreviated name of the n-th month.
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63       RADIXCHAR (LC_NUMERIC)
64              Return radix character (decimal dot, decimal comma, etc.).
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67       THOUSEP (LC_NUMERIC)
68              Return  separator  character for thousands (groups of three dig‐
69              its).
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72       YESEXPR (LC_MESSAGES)
73              Return a regular expression that can be used with  the  regex(3)
74              function to recognize a positive response to a yes/no question.
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77       NOEXPR (LC_MESSAGES)
78              Return  a  regular expression that can be used with the regex(3)
79              function to recognize a negative response to a yes/no question.
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82       CRNCYSTR (LC_MONETARY)
83              Return the currency symbol, preceded by "-" if the symbol should
84              appear  before  the value, "+" if the symbol should appear after
85              the value, or "." if the symbol should replace the radix charac‐
86              ter.
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88       The  above  list  covers  just  some  examples  of  items  that  can be
89       requested.  For a more detailed list, consult The GNU C Library  Refer‐
90       ence Manual.
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RETURN VALUE

93       If  no  locale has been selected for the appropriate category, nl_lang‐
94       info() returns a pointer to the corresponding string in the "C" locale.
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96       If item is not valid, a pointer to an empty string is returned.
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98       This pointer may point to static data that may be  overwritten  on  the
99       next call to nl_langinfo() or setlocale().
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CONFORMING TO

102       SUSv2, POSIX.1-2001.
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NAME

SYNOPSIS

DESCRIPTION

RETURN VALUE

CONFORMING TO

SEE ALSO