exchange

Atomically exchange operand with *m_data.

T exchange(T operand, cl::sycl::memory_order mem_order) volatile

1. Atomically exchange operand with *m_data.
   Parameters:
   • T operand : the value to store in *m_data.
   • cl::sycl::memory_order mem_order : the ordering to use. Can only be memory_order_relaxed.
   Returns: The old value of *m_data.