tld\_get\_4(3) libidn tld\_get\_4(3)

# [NAME](#NAME)

tld\_get\_4 - API function

# [SYNOPSIS](#SYNOPSIS)

**#include <tld.h>**

**int tld\_get\_4(const uint32\_t * in, size\_t inlen, char \** out);**

# [ARGUMENTS](#ARGUMENTS)

[const uint32\_t * in](#const)

Array of unicode code points to process. Does not need to be zero terminated.

[size\_t inlen](#size_t)

Number of unicode code points.

[char \** out](#char)

Zero terminated ascii result string pointer.

# [DESCRIPTION](#DESCRIPTION)

Isolate the top-level domain of *in* and return it as an ASCII string in *out* .

Return value: Return **TLD\_SUCCESS** on success, or the corresponding **Tld\_rc** error code otherwise.

# [REPORTING BUGS](#REPORTING_BUGS)

Report bugs to <help-libidn@gnu.org>.  
General guidelines for reporting bugs: https://www.gnu.org/gethelp/  
GNU Libidn home page: https://www.gnu.org/software/libidn/

# [COPYRIGHT](#COPYRIGHT)

Copyright © 2002-2026 Simon Josefsson.  
Copying and distribution of this file, with or without modification, are permitted in any medium without royalty provided the copyright notice and this notice are preserved.

# [SEE ALSO](#SEE_ALSO)

The full documentation for **libidn** is maintained as a Texinfo manual. If the **info** and **libidn** programs are properly installed at your site, the command

**info libidn**

should give you access to the complete manual. As an alternative you may obtain the manual from:

**https://www.gnu.org/software/libidn/manual/**

1.44 libidn

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Document: tld_get_4(3) from libidn 1.44-r6 (Chainguard OS)
Source: https://gitlab.com/libidn/libidn