#include <fontconfig.h>
FcChar32 FcCharSetNextPage(const FcCharSet *a, FcChar32[FC_CHARSET_MAP_SIZE] map, FcChar32 *next);
FcChar32 FcCharSetNextPage
Builds an array of bits marking the Unicode coverage of a for page *next. Returns the base of the array. next contains the next page in the font.
Fontconfig version 2.8.0