iconv_open
cd = iconv_open("utf-16le", "latin1");
cd = iconv_open("latin1", "utf-16le");
iconv_t iconv_open(const char *, const char *);
__weak_alias(iconv_open, _iconv_open)
cd = iconv_open(tocode, fromcode);
C = iconv_open(S->dst_codeset, S->src_codeset);
REQUIRE_LIBC((C = iconv_open(/*to*/"UTF-8", /*from*/"HZ8")),
cd = iconv_open(to, from);
cd = iconv_open(charset, mip->mi_charset);
cd = iconv_open(to_cs, from_cs);
ih = iconv_open(nl_langinfo(CODESET), codeset);
cd = iconv_open("", EXFAT_ENC);
cd = iconv_open(nl_langinfo(CODESET), NTFS_ENC);
ic = iconv_open(nl_langinfo(CODESET), "UTF-8");
ic = iconv_open("ASCII", "UTF-8"); /* g.c.d. */