[EUG-LUG:329] 1UL references in kernel code

[Ben Barrett]

Hey, does anyone know what "1UL" means??
I am looking at linux kernel source,
desperately trying to understand...
(hello Michal, r u on?)

here is some code, from include/asm/page.h:
/* PAGE_SHIFT determines the page size */
#define PAGE_SHIFT      12
#define PAGE_SIZE       (1UL << PAGE_SHIFT)
#define PAGE_MASK       (~(PAGE_SIZE-1))

thanx   ( :


   ben