Function size_approx

tests/CDSChecker/corealgo.h:109–114

}

static int size_approx()
{
	auto tail = tailIndex.load(std::memory_order_relaxed);
	auto head = headIndex.load(std::memory_order_relaxed);
	return circular_less_than(head, tail) ? static_cast<int>(tail - head) : 0;
}