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101 lines
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101 lines
4.1 KiB
HTML
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<title>towctrans (The Red Hat newlib C Library)</title>
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<a name="towctrans"></a>
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<div class="header">
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<p>
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Next: <a href="wctrans.html#wctrans" accesskey="n" rel="next">wctrans</a>, Previous: <a href="towupper.html#towupper" accesskey="p" rel="prev">towupper</a>, Up: <a href="Ctype.html#Ctype" accesskey="u" rel="up">Ctype</a> [<a href="Document-Index.html#SEC_Contents" title="Table of contents" rel="contents">Contents</a>][<a href="Document-Index.html#Document-Index" title="Index" rel="index">Index</a>]</p>
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<hr>
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<a name="towctrans_002c-towctrans_005fl_002d_002d_002dextensible-wide_002dcharacter-translation"></a>
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<h3 class="section">3.32 <code>towctrans</code>, <code>towctrans_l</code>—extensible wide-character translation</h3>
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<a name="index-towctrans"></a>
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<a name="index-towctrans_005fl"></a>
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<p><strong>Synopsis</strong>
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</p><div class="example">
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<pre class="example">#include <wctype.h>
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wint_t towctrans(wint_t <var>c</var>, wctrans_t <var>w</var>);
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#include <wctype.h>
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wint_t towctrans_l(wint_t <var>c</var>, wctrans_t <var>w</var>, locale_t <var>locale</var>);
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</pre></div>
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<p><strong>Description</strong><br>
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<code>towctrans</code> is a function which converts wide characters based on
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a specified translation type <var>w</var>. If the translation type is
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invalid or cannot be applied to the current character, no change
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to the character is made.
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</p>
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<p><code>towctrans_l</code> is like <code>towctrans</code> but performs the function based on the
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locale specified by the locale object locale. If <var>locale</var> is
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LC_GLOBAL_LOCALE or not a valid locale object, the behaviour is undefined.
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</p>
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<br>
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<p><strong>Returns</strong><br>
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<code>towctrans</code>, <code>towctrans_l</code> return the translated equivalent of <var>c</var>
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when it is a valid for the given translation, otherwise, it returns the
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input character. When the translation type is invalid, <code>errno</code> is
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set to <code>EINVAL</code>.
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</p>
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<br>
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<p><strong>Portability</strong><br>
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<code>towctrans</code> is C99.
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<code>towctrans_l</code> is POSIX-1.2008.
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</p>
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<p>No supporting OS subroutines are required.
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</p>
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<br>
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