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<center><font size="2">The Open Group Base Specifications Issue 6<br>
IEEE Std 1003.1-2001<br>
Copyright &copy; 2001 The IEEE and The Open Group, All Rights reserved.</font></center>
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<hr size="2" noshade>
<h4><a name="tag_13_25_01"></a>NAME</h4>
<blockquote>locale.h - category macros</blockquote>
<h4><a name="tag_13_25_02"></a>SYNOPSIS</h4>
<blockquote class="synopsis">
<p><tt>#include &lt;locale.h&gt;</tt></p>
</blockquote>
<h4><a name="tag_13_25_03"></a>DESCRIPTION</h4>
<blockquote>
<div class="box"><sup>[<a href="javascript:open_code('CX')">CX</a>]</sup> <img src="../images/opt-start.gif" alt="[Option Start]"
border="0"> Some of the functionality described on this reference page extends the ISO&nbsp;C standard. Any conflict between the
requirements described here and the ISO&nbsp;C standard is unintentional. This volume of IEEE&nbsp;Std&nbsp;1003.1-2001 defers to
the ISO&nbsp;C standard. <img src="../images/opt-end.gif" alt="[Option End]" border="0"></div>
<p>The <i>&lt;locale.h&gt;</i> header shall provide a definition for <b>lconv</b> structure, which shall include at least the
following members. (See the definitions of <i>LC_MONETARY</i> in <a href="xbd_chap07.html#tag_07_03_03"><i>LC_MONETARY</i></a> and
<a href="xbd_chap07.html#tag_07_03_04"><i>LC_NUMERIC</i></a> .)</p>
<pre>
<tt>char *currency_symbol
char *decimal_point
char frac_digits
char *grouping
char *int_curr_symbol
char int_frac_digits
char int_n_cs_precedes
char int_n_sep_by_space
char int_n_sign_posn
char int_p_cs_precedes
char int_p_sep_by_space
char int_p_sign_posn
char *mon_decimal_point
char *mon_grouping
char *mon_thousands_sep
char *negative_sign
char n_cs_precedes
char n_sep_by_space
char n_sign_posn
char *positive_sign
char p_cs_precedes
char p_sep_by_space
char p_sign_posn
char *thousands_sep
</tt>
</pre>
<p>The <i>&lt;locale.h&gt;</i> header shall define NULL (as defined in <a href="stddef.h.html"><i>&lt;stddef.h&gt;</i></a> ) and at
least the following as macros:</p>
<p><br>
<i>LC_ALL</i><br>
<i>LC_COLLATE</i><br>
<i>LC_CTYPE</i><br>
<sup>[<a href="javascript:open_code('CX')">CX</a>]</sup> <img src="../images/opt-start.gif" alt="[Option Start]" border="0"><br>
<i>LC_MESSAGES</i><br>
<img src="../images/opt-end.gif" alt="[Option End]" border="0"><br>
<i>LC_MONETARY</i><br>
<i>LC_NUMERIC</i><br>
<i>LC_TIME</i><br>
</p>
<p>which shall expand to distinct integer constant expressions, for use as the first argument to the <a href=
"../functions/setlocale.html"><i>setlocale</i>()</a> function.</p>
<p>Additional macro definitions, beginning with the characters <i>LC_</i> and an uppercase letter, may also be given here.</p>
<p>The following shall be declared as functions and may also be defined as macros. Function prototypes shall be provided.</p>
<pre>
<tt>struct lconv *localeconv (void);
char *setlocale(int, const char *);
</tt>
</pre>
</blockquote>
<hr>
<div class="box"><em>The following sections are informative.</em></div>
<h4><a name="tag_13_25_04"></a>APPLICATION USAGE</h4>
<blockquote>
<p>None.</p>
</blockquote>
<h4><a name="tag_13_25_05"></a>RATIONALE</h4>
<blockquote>
<p>None.</p>
</blockquote>
<h4><a name="tag_13_25_06"></a>FUTURE DIRECTIONS</h4>
<blockquote>
<p>None.</p>
</blockquote>
<h4><a name="tag_13_25_07"></a>SEE ALSO</h4>
<blockquote>
<p>The System Interfaces volume of IEEE&nbsp;Std&nbsp;1003.1-2001, <a href="../functions/localeconv.html"><i>localeconv</i>()</a>,
<a href="../functions/setlocale.html"><i>setlocale</i>()</a>, <a href="xbd_chap08.html#tag_08"><i>Environment Variables</i></a></p>
</blockquote>
<h4><a name="tag_13_25_08"></a>CHANGE HISTORY</h4>
<blockquote>
<p>First released in Issue 3.</p>
<p>Included for alignment with the ISO&nbsp;C standard.</p>
</blockquote>
<h4><a name="tag_13_25_09"></a>Issue 6</h4>
<blockquote>
<p>The <b>lconv</b> structure is expanded with new members ( <b>int_n_cs_precedes</b>, <b>int_n_sep_by_space</b>,
<b>int_n_sign_posn</b>, <b>int_p_cs_precedes</b>, <b>int_p_sep_by_space</b>, and <b>int_p_sign_posn</b>) for alignment with the
ISO/IEC&nbsp;9899:1999 standard.</p>
<p>Extensions beyond the ISO&nbsp;C standard are marked.</p>
</blockquote>
<div class="box"><em>End of informative text.</em></div>
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