fetch_max

Atomically compare operand to *m_data, storing the larger of the two in *m_data.

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

1. Atomically compare operand to *m_data, storing the larger of the two in *m_data.
   Parameters:
   • T operand : the value to compare to *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.