stringprep\_ucs4\_nfkc\_normalize(3) libidn stringprep\_ucs4\_nfkc\_normalize(3)

# [NAME](#NAME)

stringprep\_ucs4\_nfkc\_normalize - API function

# [SYNOPSIS](#SYNOPSIS)

**#include <stringprep.h>**

**uint32\_t * stringprep\_ucs4\_nfkc\_normalize(const uint32\_t * str, ssize\_t len);**

# [ARGUMENTS](#ARGUMENTS)

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

a Unicode string.

[ssize\_t len](#ssize_t)

length of *str* array, or -1 if *str* is nul-terminated.

# [DESCRIPTION](#DESCRIPTION)

Converts a UCS4 string into canonical form, see **stringprep\_utf8\_nfkc\_normalize()** for more information.

Return value: a newly allocated Unicode string, that is the NFKC normalized form of *str* .

# [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: stringprep_ucs4_nfkc_normalize(3) from libidn 1.44-r5 (Chainguard OS)
Source: https://gitlab.com/libidn/libidn