# std::latch::try_wait

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< cpp‎ | thread‎ | latch

bool try_wait() const noexcept; |  | (since C++20)

Returns true only if the internal counter has reached zero. This function may spuriously return false with very low probability even if the internal counter has reached zero.

### Parameters

(none)

### Return value

With very low probability false, otherwise cnt == 0, where `cnt` is the value of the internal counter.

### Notes

The reason why a spurious result is permitted is to allow implementations to use a memory order more relaxed than std::memory_order_seq_cst.

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