Good math features that emphasize the CPU

Question

Anyone knows any good math functions that put a lot of stress on the CPU. I want to create a simple program that simply creates a load of X seconds, while another program controls it. I'm just looking for features, not real stress testing programs.

Answer 1

In the computer game Benchmark Game there are many tests, many of which are based on mathematics. This is a good source, because the source code for each algorithm is included and there are implementations of each test in dozens of languages. Thus, you can simply use the implementation in any compilation and start-up language that is convenient for you.

Answer 2

Try the Lucas-Lemer test . This is what Prime95 uses, and Prime95 is pretty standard for testing processor voltage.

Answer 3

A naive Fibonacci implementation? Sort of:

let fib = Seq.unfold(fun (p, c) -> Some((p, c), (c, p+c))) (1,1)