Provided by: libfontconfig1-dev_2.13.1-2ubuntu3_amd64 

NAME
FcUtf8ToUcs4 - convert UTF-8 to UCS4
SYNOPSIS
#include <fontconfig/fontconfig.h>
int FcUtf8ToUcs4 (FcChar8 *src, FcChar32 *dst, int len);
DESCRIPTION
Converts the next Unicode char from src into dst and returns the number of bytes containing the char.
src must be at least len bytes long.
Fontconfig 2.13.1 06 April 2020 FcUtf8ToUcs4(3)