HEAP_PAGE_ALIGN_MASK 686 gc.c #define GET_PAGE_BODY(x) ((struct heap_page_body *)((bits_t)(x) & ~(HEAP_PAGE_ALIGN_MASK))) HEAP_PAGE_ALIGN_MASK 690 gc.c #define NUM_IN_PAGE(p) (((bits_t)(p) & HEAP_PAGE_ALIGN_MASK)/sizeof(RVALUE))