---
name: "idna_to_ascii_lz"
section: "3"
platform: "linux"
package: "libidn"
version: "1.44-1"
release: "Arch Linux 2026-11-01"
platforms: ["linux"]
url: "https://new.carta.tech/idna_to_ascii_lz"
---

# idna\_to\_ascii\_lz(3)

API function

## NAME

idna\_to\_ascii\_lz - API function

## SYNOPSIS

**#include \<idna.h\>**

**int idna\_to\_ascii\_lz(const char \*** *input***, char \*\*** *output***, int** *flags***);**

## ARGUMENTS

- const char \* input

  zero terminated input string encoded in the current locale's character set.

- char \*\* output

  pointer to newly allocated output string.

- int flags

  an **Idna\_flags** value, e.g., **IDNA\_ALLOW\_UNASSIGNED** or **IDNA\_USE\_STD3\_ASCII\_RULES**.

## DESCRIPTION

Convert domain name in the locale's encoding to ASCII string.  The domain name may contain several labels, separated by dots.  The output buffer must be deallocated by the caller.

Return value: Returns **IDNA\_SUCCESS** on success, or error code.

## 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 © 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

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/**