rgpBenchmark measures the number of fitness evaluations per second
performed by geneticProgramming. A number of samples
experiments are performed.
rgpBenchmark(fitnessFunction = function(ind) 0, samples = 1, time = 10, ...)
evaluationsPerSecondBenchmark(f, samples = 1, time = 10, ...)geneticProgramming.evaluationsPerSecondBenchmark measures the number of times a function
can be called per second in a tight loop.