2. リファレンス
3. atomic
4. atomic
5. fetch_fmaximum_num

最終更新日時: 2026年08月07日 21時35分44秒 (JST)
rotarymars が更新

履歴 編集

std::atomic::fetch_fmaximum_num(C++26)

constexpr T
  fetch_fmaximum_num(difference_type operand,
                     memory_order order = memory_order_seq_cst
                     ) noexcept;                               // (1) C++26

#include <iostream>
#include <atomic>

int main()
{
  std::atomic<double> x(2);

  double ret = x.fetch_fmaximum_num(3);

  std::cout << ret << std::endl;
  std::cout << x.load() << std::endl;
}

2
3