std::atomic_flag_clear, std::atomic_flag_clear_explicit

Header: <atomic>

Atomically changes the state of the std::atomic_flag pointed to by obj to clear (false).

# Declarations

void atomic_flag_clear( volatile std::atomic_flag* obj ) noexcept;

(since C++11)

void atomic_flag_clear( std::atomic_flag* obj ) noexcept;

(since C++11)

void atomic_flag_clear_explicit( volatile std::atomic_flag* obj,
std::memory_order order ) noexcept;

(since C++11)

void atomic_flag_clear_explicit( std::atomic_flag* obj,
std::memory_order order ) noexcept;

(since C++11)

# Parameters

• obj: pointer to std::atomic_flag to access
• order: the memory synchronization ordering

# Notes

std::atomic_flag_clear and std::atomic_flag_clear_explicit can be implemented as obj->clear() and obj->clear(order) respectively.

# Defect reports

# See also

• atomic_flag
• atomic_flag_test_and_setatomic_flag_test_and_set_explicit
• memory_order
• C documentation