yaz_iconv_decoder_t yaz_utf8_decoder(const char *fromcode,
yaz_iconv_decoder_t d);
yaz_iconv_decoder_t yaz_ucs4_decoder(const char *tocode,
yaz_iconv_decoder_t yaz_utf8_decoder(const char *fromcode,
yaz_iconv_decoder_t d);
yaz_iconv_decoder_t yaz_ucs4_decoder(const char *tocode,