Provided by: libfontconfig1-dev_2.12.6-0ubuntu2_amd64 
NAME
FcUcs4ToUtf8 - convert UCS4 to UTF-8
SYNOPSIS
#include <fontconfig/fontconfig.h>
int FcUcs4ToUtf8 (FcChar32 src, FcChar8 dst[FC_UTF8_MAX_LEN]);
DESCRIPTION
Converts the Unicode char from src into dst and returns the number of bytes needed to encode the char.