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ICONV_OPEN(3)		   Linux Programmer's Manual		 ICONV_OPEN(3)

NAME
       iconv_open - allocate descriptor for character set conversion

SYNOPSIS
       #include <iconv.h>

       iconv_t iconv_open (const char* tocode, const char* fromcode);

DESCRIPTION
       The  iconv_open function allocates a conversion descriptor suitable for
       converting byte sequences from character encoding fromcode to character
       encoding tocode.

       The values permitted for fromcode and tocode and the supported combina‐
       tions are system dependent. For the  libiconv  library,	the  following
       encodings are supported, in all combinations.

       European languages
	      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{Cyril‐
	      lic,Ukraine,Greek,Turkish}, Macintosh

       Semitic languages
	      ISO-8859-{6,8}, CP{1255,1256}, CP862, Mac{Hebrew,Arabic}

       Japanese
	      EUC-JP,	SHIFT_JIS,    CP932,	ISO-2022-JP,	ISO-2022-JP-2,
	      ISO-2022-JP-1

       Chinese
	      EUC-CN,  HZ,  GBK,  GB18030,  EUC-TW,  BIG5,  CP950, BIG5-HKSCS,
	      ISO-2022-CN, ISO-2022-CN-EXT

       Korean
	      EUC-KR, CP949, ISO-2022-KR, JOHAB

       Armenian
	      ARMSCII-8

       Georgian
	      Georgian-Academy, Georgian-PS

       Tajik
	      KOI8-T

       Thai
	      TIS-620, CP874, MacThai

       Laotian
	      MuleLao-1, CP1133

       Vietnamese
	      VISCII, TCVN, CP1258

       Platform specifics
	      HP-ROMAN8, NEXTSTEP

       Full Unicode
	      UTF-8
	      UCS-2, UCS-2BE, UCS-2LE
	      UCS-4, UCS-4BE, UCS-4LE
	      UTF-16, UTF-16BE, UTF-16LE
	      UTF-32, UTF-32BE, UTF-32LE
	      UTF-7
	      C99, JAVA

       Full Unicode, in terms of uint16_t or uint32_t
	      (with machine dependent endianness and alignment)
	      UCS-2-INTERNAL, UCS-4-INTERNAL

       Locale dependent, in terms of char or wchar_t
	      (with machine  dependent	endianness  and	 alignment,  and  with
	      semantics	 depending  on	the OS and the current LC_CTYPE locale
	      facet)
	      char, wchar_t

       When configured with the option --enable-extra-encodings, it also  pro‐
       vides support for a few extra encodings:

       European languages
	      CP{437,737,775,852,853,855,857,858,860,861,863,865,869,1125}

       Semitic languages
	      CP864

       Japanese
	      EUC-JISX0213, Shift_JISX0213, ISO-2022-JP-3

       Turkmen
	      TDS565

       Platform specifics
	      RISCOS-LATIN1

       The  empty  encoding  name  ""  is equivalent to "char": it denotes the
       locale dependent character encoding.

       When the string "//TRANSLIT" is appended to tocode, 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.

       When  the string "//IGNORE" is appended to tocode, characters that can‐
       not be represented in the target character set will  be	silently  dis‐
       carded.

       The  resulting  conversion descriptor can be used with iconv any number
       of times. It remains valid until deallocated using iconv_close.

       A conversion descriptor contains a  conversion  state.  After  creation
       using  iconv_open, the state is in the initial state. Using iconv modi‐
       fies the descriptor'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 iconv with NULL as inbuf
       argument.

RETURN VALUE
       The iconv_open function returns a freshly allocated conversion descrip‐
       tor. In case of error, it sets errno and returns (iconv_t)(-1).

ERRORS
       The following error can occur, among others:

       EINVAL The conversion from fromcode to tocode is not supported  by  the
	      implementation.

CONFORMING TO
       UNIX98

SEE ALSO
       iconv(3), iconv_close(3)

GNU				 May 26, 2002			 ICONV_OPEN(3)
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