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Add set_size ().
Return the number of members in the set.
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2 changed files with 13 additions and 0 deletions
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@ -69,6 +69,7 @@ int set_is_intersecting (const set_t *s1, const set_t *s2);
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int set_is_equivalent (const set_t *s1, const set_t *s2);
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int set_is_subset (const set_t *set, const set_t *sub);
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int set_is_member (const set_t *set, unsigned x);
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unsigned set_size (const set_t *set);
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setstate_t *set_first (const set_t *set);
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setstate_t *set_next (setstate_t *setstate);
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const char *set_as_string (const set_t *set);
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@ -269,6 +269,18 @@ set_is_member (const set_t *set, unsigned x)
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return (set->map[x / BITS] & (1 << (x % BITS))) != 0;
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}
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unsigned
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set_size (const set_t *set)
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{
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unsigned count = 0;
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unsigned i;
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for (i = 0; i < set->size; i++)
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if (set_is_member (set, i))
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count++;
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return count;
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}
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setstate_t *
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set_first (const set_t *set)
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{
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