1 '\" te
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  10 .TH NL_LANGINFO 3C "Jul 24, 2002"
  11 .SH NAME
  12 nl_langinfo \- language information
  13 .SH SYNOPSIS
  14 .LP
  15 .nf
  16 #include <langinfo.h>
  17 
  18 \fBchar *\fR\fBnl_langinfo\fR(\fBnl_item\fR \fIitem\fR);
  19 .fi
  20 
  21 .SH DESCRIPTION
  22 .sp
  23 .LP
  24 The \fBnl_langinfo()\fR function returns a pointer to a null-terminated string
  25 containing information relevant to a particular language or cultural area
  26 defined in the programs locale. The manifest constant names and values of
  27 \fIitem\fR are defined by <\fBlanginfo.h\fR>. For example:
  28 .sp
  29 .LP
  30 \fBnl_langinfo (ABDAY_1);\fR
  31 .sp
  32 .LP
  33 would return a pointer to the string "\fBDim\fR" if the identified language was
  34 French and a French locale was correctly installed; or "\fBSun\fR" if the
  35 identified language was English.
  36 .SH RETURN VALUES
  37 .sp
  38 .LP
  39 If \fBsetlocale\fR(3C) has not been called successfully, or if  data for a
  40 supported language is either not available, or if \fIitem\fR is not defined
  41 therein, then \fBnl_langinfo()\fR returns a pointer to the corresponding string
  42 in the C locale. In all locales,  \fBnl_langinfo()\fR returns a pointer to an
  43 empty string if \fIitem\fR contains an invalid setting.
  44 .SH USAGE
  45 .sp
  46 .LP
  47 The \fBnl_langinfo()\fR function can be used safely in multithreaded
  48 applications, as long as \fBsetlocale\fR(3C) is not being called to change the
  49 locale.
  50 .SH ATTRIBUTES
  51 .sp
  52 .LP
  53 See \fBattributes\fR(5) for descriptions of the following attributes:
  54 .sp
  55 
  56 .sp
  57 .TS
  58 box;
  59 c | c
  60 l | l .
  61 ATTRIBUTE TYPE  ATTRIBUTE VALUE
  62 _
  63 CSI     Enabled
  64 _
  65 Interface Stability     Standard
  66 _
  67 MT-Level        MT-Safe with exceptions
  68 .TE
  69 
  70 .SH SEE ALSO
  71 .sp
  72 .LP
  73 \fBsetlocale\fR(3C), \fBlanginfo.h\fR(3HEAD), \fBnl_types.h\fR(3HEAD),
  74 \fBattributes\fR(5), \fBstandards\fR(5)
  75 .SH WARNINGS
  76 .sp
  77 .LP
  78 The array pointed to by the return value should not be modified by the program.
  79 Subsequent calls to  \fBnl_langinfo()\fR may overwrite the array.