gethugepagesize - Get the default huge page size

       libhugetlbfs was written by various people on the libhugetlbfs-devel mailing list.

                                                  March 7, 2012                               GETHUGEPAGESIZE(3)

       The  gethugepagesize()  function  returns  the default huge page size used by libhugetlbfs.  This will be
       either the system default, or a valid value set by the environment variable HUGETLB_DEFAULT_PAGE_SIZE.

       If the system does not support any huge page sizes an error is returned.

ENOSYS The system does not support huge pages.

       gethugepagesize - Get the default huge page size

       On success, the default huge page size is returned.   On  failure,  -1  is  returned  and  errno  is  set
       appropriately.

libhugetlbfs(7)

#include<hugetlbfs.h>longgethugepagesize(void)