/* Loop over all elements of SBITSET, starting with MIN. */
#define EXECUTE_IF_SET_IN_SBITMAP(SBITMAP, MIN, N, CODE) \
do { \
- unsigned int word_num_; \
+ unsigned int word_num_ = (MIN) / (unsigned int) SBITMAP_ELT_BITS; \
unsigned int bit_num_ = (MIN) % (unsigned int) SBITMAP_ELT_BITS; \
unsigned int size_ = (SBITMAP)->size; \
SBITMAP_ELT_TYPE *ptr_ = (SBITMAP)->elms; \
+ SBITMAP_ELT_TYPE word_; \
\
- for (word_num_ = (MIN) / (unsigned int) SBITMAP_ELT_BITS; \
- word_num_ < size_; word_num_++, bit_num_ = 0) \
+ if (word_num_ < size_) \
{ \
- SBITMAP_ELT_TYPE word_ = ptr_[word_num_]; \
- \
- if (word_ != 0) \
- for (; bit_num_ < SBITMAP_ELT_BITS; bit_num_++) \
- { \
- SBITMAP_ELT_TYPE _mask = (SBITMAP_ELT_TYPE) 1 << bit_num_; \
+ word_ = ptr_[word_num_] >> bit_num_; \
\
- if ((word_ & _mask) != 0) \
- { \
- word_ &= ~ _mask; \
- (N) = word_num_ * SBITMAP_ELT_BITS + bit_num_; \
- CODE; \
- if (word_ == 0) \
- break; \
- } \
- } \
+ while (1) \
+ { \
+ for (; word_ != 0; word_ >>= 1, bit_num_++) \
+ { \
+ if ((word_ & 1) != 0) \
+ { \
+ (N) = word_num_ * SBITMAP_ELT_BITS + bit_num_; \
+ CODE; \
+ } \
+ } \
+ word_num_++; \
+ if (word_num_ >= size_) \
+ break; \
+ bit_num_ = 0, word_ = ptr_[word_num_]; \
+ } \
} \
} while (0)
extern bool sbitmap_a_or_b_and_c_cg (sbitmap, sbitmap, sbitmap, sbitmap);
extern void sbitmap_a_and_b_or_c (sbitmap, sbitmap, sbitmap, sbitmap);
extern bool sbitmap_a_and_b_or_c_cg (sbitmap, sbitmap, sbitmap, sbitmap);
+extern bool sbitmap_any_common_bits (sbitmap, sbitmap);
extern void sbitmap_a_and_b (sbitmap, sbitmap, sbitmap);
extern bool sbitmap_a_and_b_cg (sbitmap, sbitmap, sbitmap);
extern void sbitmap_a_or_b (sbitmap, sbitmap, sbitmap);