BrainForked - Fast BF interpreter in C++11

This is almost standard C++, except for the use of clang++/g++ computed labels extension. At the time of writing (Aug 2020), it is the fastest non-JIT interpreter for the commonly referenced mandelbrot and hanoi BF programs.

For a clear explanation of the computed labels, see the slower but more lucid code in https://github.com/JohnCGriffin/BF-computed-goto.

Building

Step 1 - The Makefile is set to use clang++. Change to g++ if you prefer.

Step 2 - On a Unix machine, use make.

Step 3 - make test to try it on the included mandelbrot.bf, a common exercise in BF land.