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<title>ICONV_OPEN</title>
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<h1 align=center>ICONV_OPEN</h1>
<a href="#NAME">NAME</a><br>
<a href="#SYNOPSIS">SYNOPSIS</a><br>
<a href="#DESCRIPTION">DESCRIPTION</a><br>
<a href="#RETURN VALUE">RETURN VALUE</a><br>
<a href="#ERRORS">ERRORS</a><br>
<a href="#CONFORMING TO">CONFORMING TO</a><br>
<a href="#SEE ALSO">SEE ALSO</a><br>

<hr>
<a name="NAME"></a>
<h2>NAME</h2>
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<p>iconv_open &minus; allocate descriptor for character set
conversion</p>
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<a name="SYNOPSIS"></a>
<h2>SYNOPSIS</h2>
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<pre><b>#include &lt;iconv.h&gt;

iconv_t iconv_open (const char*</b> <i>tocode</i><b>, const char*</b> <i>fromcode</i><b>);
</b></pre>
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<a name="DESCRIPTION"></a>
<h2>DESCRIPTION</h2>
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<p>The <b>iconv_open</b> function allocates a conversion
descriptor suitable for converting byte sequences from
character encoding <i>fromcode</i> to character encoding
<i>tocode</i>.</p>
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<p>The values permitted for <i>fromcode</i> and
<i>tocode</i> and the supported combinations are system
dependent. For the libiconv library, the following encodings
are supported, in all combinations.</p>
</td>
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       cols="2" cellspacing="0" cellpadding="0">
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<p>European languages</p></td>
</table>
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<p>ASCII, ISO-8859-{1,2,3,4,5,7,9,10,13,14,15,16}, KOI8-R,
KOI8-U, KOI8-RU, CP{1250,1251,1252,1253,1254,1257},
CP{850,866},
Mac{Roman,CentralEurope,Iceland,Croatian,Romania},
Mac{Cyrillic,Ukraine,Greek,Turkish}, Macintosh</p>
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       cols="2" cellspacing="0" cellpadding="0">
<tr valign="top" align="left">
<td width="10%"></td>
<td width="89%">
<p>Semitic languages</p></td>
</table>
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       cols="2" cellspacing="0" cellpadding="0">
<tr valign="top" align="left">
<td width="21%"></td>
<td width="77%">
<p>ISO-8859-{6,8}, CP{1255,1256}, CP862,
Mac{Hebrew,Arabic}</p>
</td>
</table>
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       cols="2" cellspacing="0" cellpadding="0">
<tr valign="top" align="left">
<td width="10%"></td>
<td width="89%">
<p>Japanese</p></td>
</table>
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<table width="100%" border=0 rules="none" frame="void"
       cols="2" cellspacing="0" cellpadding="0">
<tr valign="top" align="left">
<td width="21%"></td>
<td width="77%">
<p>EUC-JP, EUCJP-MS, SHIFT_JIS, CP932, ISO-2022-JP,
ISO-2022-JP-2, ISO-2022-JP-1</p>
</td>
</table>
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<table width="100%" border=0 rules="none" frame="void"
       cols="2" cellspacing="0" cellpadding="0">
<tr valign="top" align="left">
<td width="10%"></td>
<td width="89%">
<p>Chinese</p></td>
</table>
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<table width="100%" border=0 rules="none" frame="void"
       cols="2" cellspacing="0" cellpadding="0">
<tr valign="top" align="left">
<td width="21%"></td>
<td width="77%">
<p>EUC-CN, HZ, GBK, CP936, GB18030, EUC-TW, BIG5, CP950,
BIG5-HKSCS, BIG5-HKSCS:2001, BIG5-HKSCS:1999, ISO-2022-CN,
ISO-2022-CN-EXT</p>
</td>
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       cols="3" cellspacing="0" cellpadding="0">
<tr valign="top" align="left">
<td width="11%"></td>
<td width="8%">

<p>Korean</p>
</td>
<td width="79%">
</td>
</table>
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<table width="100%" border=0 rules="none" frame="void"
       cols="2" cellspacing="0" cellpadding="0">
<tr valign="top" align="left">
<td width="21%"></td>
<td width="77%">
<p>EUC-KR, CP949, ISO-2022-KR, JOHAB</p>
</td>
</table>
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<table width="100%" border=0 rules="none" frame="void"
       cols="2" cellspacing="0" cellpadding="0">
<tr valign="top" align="left">
<td width="10%"></td>
<td width="89%">
<p>Armenian</p></td>
</table>
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<table width="100%" border=0 rules="none" frame="void"
       cols="2" cellspacing="0" cellpadding="0">
<tr valign="top" align="left">
<td width="21%"></td>
<td width="77%">
<p>ARMSCII-8</p>
</td>
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       cols="2" cellspacing="0" cellpadding="0">
<tr valign="top" align="left">
<td width="10%"></td>
<td width="89%">
<p>Georgian</p></td>
</table>
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       cols="2" cellspacing="0" cellpadding="0">
<tr valign="top" align="left">
<td width="21%"></td>
<td width="77%">
<p>Georgian-Academy, Georgian-PS</p>
</td>
</table>
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       cols="3" cellspacing="0" cellpadding="0">
<tr valign="top" align="left">
<td width="11%"></td>
<td width="7%">

<p>Tajik</p>
</td>
<td width="80%">
</td>
</table>
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       cols="2" cellspacing="0" cellpadding="0">
<tr valign="top" align="left">
<td width="21%"></td>
<td width="77%">
<p>KOI8-T</p>
</td>
</table>
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<table width="100%" border=0 rules="none" frame="void"
       cols="3" cellspacing="0" cellpadding="0">
<tr valign="top" align="left">
<td width="11%"></td>
<td width="8%">

<p>Kazakh</p>
</td>
<td width="79%">
</td>
</table>
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       cols="2" cellspacing="0" cellpadding="0">
<tr valign="top" align="left">
<td width="21%"></td>
<td width="77%">
<p>PT154</p>
</td>
</table>
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<tr valign="top" align="left">
<td width="11%"></td>
<td width="5%">

<p>Thai</p>
</td>
<td width="82%">
</td>
</table>
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       cols="2" cellspacing="0" cellpadding="0">
<tr valign="top" align="left">
<td width="21%"></td>
<td width="77%">
<p>TIS-620, CP874, MacThai</p>
</td>
</table>
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       cols="2" cellspacing="0" cellpadding="0">
<tr valign="top" align="left">
<td width="10%"></td>
<td width="89%">
<p>Laotian</p></td>
</table>
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       cols="2" cellspacing="0" cellpadding="0">
<tr valign="top" align="left">
<td width="21%"></td>
<td width="77%">
<p>MuleLao-1, CP1133</p>
</td>
</table>
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<table width="100%" border=0 rules="none" frame="void"
       cols="2" cellspacing="0" cellpadding="0">
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<td width="10%"></td>
<td width="89%">
<p>Vietnamese</p></td>
</table>
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       cols="2" cellspacing="0" cellpadding="0">
<tr valign="top" align="left">
<td width="21%"></td>
<td width="77%">
<p>VISCII, TCVN, CP1258</p>
</td>
</table>
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<tr valign="top" align="left">
<td width="10%"></td>
<td width="89%">
<p>Platform specifics</p></td>
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<p>HP-ROMAN8, NEXTSTEP</p>
</td>
</table>
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       cols="2" cellspacing="0" cellpadding="0">
<tr valign="top" align="left">
<td width="10%"></td>
<td width="89%">
<p>Full Unicode</p></td>
</table>
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<td width="21%"></td>
<td width="77%">
<p>UTF-8</p>
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<p>UCS-2, UCS-2BE, UCS-2LE</p>
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<p>UCS-4, UCS-4BE, UCS-4LE</p>
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<p>UTF-16, UTF-16BE, UTF-16LE</p>
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<p>UTF-32, UTF-32BE, UTF-32LE</p>
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<p>UTF-7</p>
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<p>C99, JAVA</p>
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<td width="10%"></td>
<td width="89%">
<p>Full Unicode, in terms of <b>uint16_t</b> or
<b>uint32_t</b></p></td>
</table>
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<td width="21%"></td>
<td width="77%">
<p>(with machine dependent endianness and alignment)</p>
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<p>UCS-2-INTERNAL, UCS-4-INTERNAL</p>
</td>
</table>
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<table width="100%" border=0 rules="none" frame="void"
       cols="2" cellspacing="0" cellpadding="0">
<tr valign="top" align="left">
<td width="10%"></td>
<td width="89%">
<p>Locale dependent, in terms of <b>char</b> or
<b>wchar_t</b></p></td>
</table>
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<td width="21%"></td>
<td width="77%">
<p>(with machine dependent endianness and alignment, and
with semantics depending on the OS and the current LC_CTYPE
locale facet)</p>
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<p>char, wchar_t</p>
</td>
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<td width="10%"></td>
<td width="89%">
<p>When configured with the option
<b>&minus;&minus;enable-extra-encodings</b>, it also
provides support for a few extra encodings:</p>
</td>
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<td width="10%"></td>
<td width="89%">
<p>European languages</p></td>
</table>
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<td width="77%">
<pre>CP{437,737,775,852,853,855,857,858,860,861,863,865,869,1125}
</pre>
</td>
</table>
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<table width="100%" border=0 rules="none" frame="void"
       cols="2" cellspacing="0" cellpadding="0">
<tr valign="top" align="left">
<td width="10%"></td>
<td width="89%">
<p>Semitic languages</p></td>
</table>
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<table width="100%" border=0 rules="none" frame="void"
       cols="2" cellspacing="0" cellpadding="0">
<tr valign="top" align="left">
<td width="21%"></td>
<td width="77%">
<p>CP864</p>
</td>
</table>
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<table width="100%" border=0 rules="none" frame="void"
       cols="2" cellspacing="0" cellpadding="0">
<tr valign="top" align="left">
<td width="10%"></td>
<td width="89%">
<p>Japanese</p></td>
</table>
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<table width="100%" border=0 rules="none" frame="void"
       cols="2" cellspacing="0" cellpadding="0">
<tr valign="top" align="left">
<td width="21%"></td>
<td width="77%">
<p>EUC-JISX0213, Shift_JISX0213, ISO-2022-JP-3</p>
</td>
</table>
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<table width="100%" border=0 rules="none" frame="void"
       cols="2" cellspacing="0" cellpadding="0">
<tr valign="top" align="left">
<td width="10%"></td>
<td width="89%">
<p>Chinese</p></td>
</table>
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<table width="100%" border=0 rules="none" frame="void"
       cols="2" cellspacing="0" cellpadding="0">
<tr valign="top" align="left">
<td width="21%"></td>
<td width="77%">
<p>BIG5-2003 (experimental)</p>
</td>
</table>
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<table width="100%" border=0 rules="none" frame="void"
       cols="2" cellspacing="0" cellpadding="0">
<tr valign="top" align="left">
<td width="10%"></td>
<td width="89%">
<p>Turkmen</p></td>
</table>
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<table width="100%" border=0 rules="none" frame="void"
       cols="2" cellspacing="0" cellpadding="0">
<tr valign="top" align="left">
<td width="21%"></td>
<td width="77%">
<p>TDS565</p>
</td>
</table>
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<table width="100%" border=0 rules="none" frame="void"
       cols="2" cellspacing="0" cellpadding="0">
<tr valign="top" align="left">
<td width="10%"></td>
<td width="89%">
<p>Platform specifics</p></td>
</table>
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       cols="2" cellspacing="0" cellpadding="0">
<tr valign="top" align="left">
<td width="21%"></td>
<td width="77%">
<p>ATARIST, RISCOS-LATIN1</p>
</td>
</table>
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<tr valign="top" align="left">
<td width="10%"></td>
<td width="89%">
<p>The empty encoding name &quot;&quot; is equivalent to
&quot;char&quot;: it denotes the locale dependent character
encoding.</p>
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<p>When the string &quot;//TRANSLIT&quot; is appended to
<i>tocode</i>, transliteration is activated. This means that
when a character cannot be represented in the target
character set, it can be approximated through one or several
similarly looking characters.</p>
<!-- INDENTATION -->
<p>When the string &quot;//IGNORE&quot; is appended to
<i>tocode</i>, characters that cannot be represented in the
target character set will be silently discarded.</p>
<!-- INDENTATION -->
<p>The resulting conversion descriptor can be used with
<b>iconv</b> any number of times. It remains valid until
deallocated using <b>iconv_close</b>.</p>
<!-- INDENTATION -->
<p>A conversion descriptor contains a conversion state.
After creation using <b>iconv_open</b>, the state is in the
initial state. Using <b>iconv</b> modifies the
descriptor&rsquo;s conversion state. (This implies that a
conversion descriptor can not be used in multiple threads
simultaneously.) To bring the state back to the initial
state, use <b>iconv</b> with NULL as <i>inbuf</i>
argument.</p>
</td>
</table>
<a name="RETURN VALUE"></a>
<h2>RETURN VALUE</h2>
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<td width="89%">
<p>The <b>iconv_open</b> function returns a freshly
allocated conversion descriptor. In case of error, it sets
<b>errno</b> and returns (iconv_t)(-1).</p>
</td>
</table>
<a name="ERRORS"></a>
<h2>ERRORS</h2>
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<td width="89%">
<p>The following error can occur, among others:</p>
</td>
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<td width="11%"></td>
<td width="8%">

<p><b>EINVAL</b></p>
</td>
<td width="1%"></td>
<td width="77%">

<p>The conversion from <i>fromcode</i> to <i>tocode</i> is
not supported by the implementation.</p>
</td>
</table>
<a name="CONFORMING TO"></a>
<h2>CONFORMING TO</h2>
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<td width="10%"></td>
<td width="89%">
<p>UNIX98</p>
</td>
</table>
<a name="SEE ALSO"></a>
<h2>SEE ALSO</h2>
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<td width="10%"></td>
<td width="89%">
<p><b>iconv</b>(3), <b>iconvctl</b>(3),
<b>iconv_close</b>(3)</p>
</td>
</table>
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