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idxset: Add set comparison operations

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Add isdisjoint(), issubset(), issuperset() and equals() functions that
element-wise compare two idxsets.

Signed-off-by: Alper Nebi Yasak <alpernebiyasak@gmail.com>
Part-of: <https://gitlab.freedesktop.org/pulseaudio/pulseaudio/-/merge_requests/596>
This commit is contained in:
Alper Nebi Yasak 2021-06-23 17:50:50 +03:00
parent fb63e58931
commit ec668ac44b
2 changed files with 46 additions and 0 deletions
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34
src/pulsecore/idxset.c
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@ -470,6 +470,40 @@ bool pa_idxset_isempty(pa_idxset *s) {
return s->n_entries == 0;
}
bool pa_idxset_isdisjoint(pa_idxset *s, pa_idxset *t) {
struct idxset_entry *i;
pa_assert(s);
pa_assert(t);
for (i = s->iterate_list_head; i; i = i->iterate_next)
if (pa_idxset_contains(t, i->data))
return false;
return true;
}
bool pa_idxset_issubset(pa_idxset *s, pa_idxset *t) {
struct idxset_entry *i;
pa_assert(s);
pa_assert(t);
for (i = s->iterate_list_head; i; i = i->iterate_next)
if (!pa_idxset_contains(t, i->data))
return false;
return true;
}
bool pa_idxset_issuperset(pa_idxset *s, pa_idxset *t) {
return pa_idxset_issubset(t, s);
}
bool pa_idxset_equals(pa_idxset *s, pa_idxset *t) {
return pa_idxset_issubset(s, t) && pa_idxset_issuperset(s, t);
}
pa_idxset *pa_idxset_copy(pa_idxset *s, pa_copy_func_t copy_func) {
pa_idxset *copy;
struct idxset_entry *i;