Function bitmap_is_empty

ewah/bitmap.c:228–235

}

int bitmap_is_empty(struct bitmap *self)
{
	size_t i;
	for (i = 0; i < self->word_alloc; i++)
		if (self->words[i])
			return 0;
	return 1;
}

int bitmap_equals(struct bitmap *self, struct bitmap *other)
{