Provided by: libfontconfig1-dev_2.12.6-0ubuntu2_amd64 

NAME
FcCacheSubdir - Return the i'th subdirectory.
SYNOPSIS
#include <fontconfig/fontconfig.h>
const FcChar8 * FcCacheSubdir (const FcCache *cache, inti);
DESCRIPTION
The set of subdirectories stored in a cache file are indexed by this function, i should range from 0 to
n-1, where n is the return value from FcCacheNumSubdir.
Fontconfig 2.12.6 05 April 2018 FcCacheSubdir(3)