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<a name="towctrans_002c-towctrans_005fl_002d_002d_002dextensible-wide_002dcharacter-translation"></a>
<h3 class="section">3.32 <code>towctrans</code>, <code>towctrans_l</code>&mdash;extensible wide-character translation</h3>
<a name="index-towctrans"></a>
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<p><strong>Synopsis</strong>
</p><div class="example">
<pre class="example">#include &lt;wctype.h&gt;
wint_t towctrans(wint_t <var>c</var>, wctrans_t <var>w</var>);

#include &lt;wctype.h&gt;
wint_t towctrans_l(wint_t <var>c</var>, wctrans_t <var>w</var>, locale_t <var>locale</var>);

</pre></div>
<p><strong>Description</strong><br>
<code>towctrans</code> is a function which converts wide characters based on
a specified translation type <var>w</var>.  If the translation type is
invalid or cannot be applied to the current character, no change
to the character is made.
</p>
<p><code>towctrans_l</code> is like <code>towctrans</code> but performs the function based on the
locale specified by the locale object locale.  If <var>locale</var> is
LC_GLOBAL_LOCALE or not a valid locale object, the behaviour is undefined.
</p>
<br>
<p><strong>Returns</strong><br>
<code>towctrans</code>, <code>towctrans_l</code> return the translated equivalent of <var>c</var>
when it is a valid for the given translation, otherwise, it returns the
input character.  When the translation type is invalid, <code>errno</code> is
set to <code>EINVAL</code>.
</p>
<br>
<p><strong>Portability</strong><br>
<code>towctrans</code> is C99.
<code>towctrans_l</code> is POSIX-1.2008.
</p>
<p>No supporting OS subroutines are required.
</p>
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