C++: Fastest method to check if all array elements are equal

Question

What is the fastest method to check if all elements of an array(preferable integer array) are equal. Till now I have been using the following code:

bool chec         


        

Answer 1

Find a library that's available on your platform that supports threading or parallel-for loops, and split the computation out such that different cores test different ranges of the array.

Some available libraries are listed here:

http://parallel-for.sourceforge.net/parallelfor.html

Or possibly, you can make use of the parallism that many GPU's offer.