pgtok
#define pgtok(a) (((a)*(size_t)getpagesize())/1024)
#define pgtok(a) (((u_long) ((a) * PAGE_SIZE) / 1024))
#define pgtok(a) (((a)*getpagesize())/1024)
#define pgtok(a) (long)((a) * ((uint32_t)pagesize >> 10))