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Eigen-unsupported
3.4.90 (git rev 67eeba6e720c5745abc77ae6c92ce0a44aa7b7ae)
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Pseudo expression providing an operator = that will evaluate its argument asynchronously on the specified device. Currently only ThreadPoolDevice implements proper asynchronous execution, while the default and GPU devices just run the expression synchronously and call m_done() on completion..
Example: auto done = []() { ... expression evaluation done ... }; C.device(thread_pool_device, std::move(done)) = A + B;