{
unsigned long an = BIT_ALIGN_UP(n);
unsigned long am = BIT_ALIGN_DOWN(m);
- bitmap_word headmask = -1ULL >> (n % BITMAP_WORD_BITS);
- bitmap_word tailmask = ~(-1ULL >> (m % BITMAP_WORD_BITS));
+ bitmap_word headmask = BITMAP_WORD_1 >> (n % BITMAP_WORD_BITS);
+ bitmap_word tailmask = ~(BITMAP_WORD_1 >> (m % BITMAP_WORD_BITS));
assert(m >= n);
{
unsigned long an = BIT_ALIGN_UP(n);
unsigned long am = BIT_ALIGN_DOWN(m);
- bitmap_word headmask = -1ULL >> (n % BITMAP_WORD_BITS);
- bitmap_word tailmask = ~(-1ULL >> (m % BITMAP_WORD_BITS));
+ bitmap_word headmask = BITMAP_WORD_1 >> (n % BITMAP_WORD_BITS);
+ bitmap_word tailmask = ~(BITMAP_WORD_1 >> (m % BITMAP_WORD_BITS));
assert(m >= n);
return __builtin_clzl(w);
#else
int lz = 0;
- bitmap_word mask = 1UL << (BITMAP_WORD_BITS - 1);
+ bitmap_word mask = (bitmap_word)1 << (BITMAP_WORD_BITS - 1);
while (!(w & mask)) {
lz++;
{
unsigned long an = BIT_ALIGN_UP(n);
unsigned long am = BIT_ALIGN_DOWN(m);
- bitmap_word headmask = -1ULL >> (n % BITMAP_WORD_BITS);
- bitmap_word tailmask = ~(-1ULL >> (m % BITMAP_WORD_BITS));
+ bitmap_word headmask = BITMAP_WORD_1 >> (n % BITMAP_WORD_BITS);
+ bitmap_word tailmask = ~(BITMAP_WORD_1 >> (m % BITMAP_WORD_BITS));
assert(m >= n);
#define BITMAP_NWORDS(_n) \
(((_n) + BITMAP_WORD_BITS - 1) / BITMAP_WORD_BITS)
+#define BITMAP_WORD_0 (0)
+#define BITMAP_WORD_1 ((bitmap_word)-1UL)
+
/*
* We wrap each word in a structure for type checking.
*/