537     lua_Unsigned lim = n;  in project()  local
539     lim |= (lim >> 1);  in project()
540     lim |= (lim >> 2);  in project()
541     lim |= (lim >> 4);  in project()
542     lim |= (lim >> 8);  in project()
543     lim |= (lim >> 16);  in project()
545     lim |= (lim >> 32);  /* integer type has more than 32 bits */  in project()
547     lua_assert((lim & (lim + 1)) == 0  /* 'lim + 1' is a power of 2, */  in project()
548       && lim >= n  /* not smaller than 'n', */  in project()
549       && (lim >> 1) < n);  /* and it is the smallest one */  in project()
550     while ((ran &= lim) > n)  /* project 'ran' into [0..lim] */  in project()