Provided by: libfontconfig1-dev_2.12.6-0ubuntu2_amd64 

NAME
FcCharSetCount - Count entries in a charset
SYNOPSIS
#include <fontconfig/fontconfig.h>
FcChar32 FcCharSetCount (const FcCharSet *a);
DESCRIPTION
Returns the total number of Unicode chars in a.
Fontconfig 2.12.6 05 April 2018 FcCharSetCount(3)