This problem, and its solution, is similar in most ways to the previous one. What is slightly different is that the function concurrently executing on each thread must return a value that represents the minimum or the maximum element in the subrange. The pprocess() function template, shown as follows, is a higher-level function that implements the requested functionality generically, in the following way:
- Its arguments are the first and one-past-last iterators to the range and a function object that processes the range that we will call f.
- If the size of the range is smaller than a particular threshold, set to 10,000 elements here, it simply executes the function object f received ...
