![]() ![]() There even exist Brainfuck interpreters written in the Brainfuck language itself. Although Brainfuck programs, especially complicated ones, are difficult to write, it is quite trivial to write an interpreter for Brainfuck in a more typical language such as C due to its simplicity. A variety of Brainfuck programs have been written. Nonetheless, like any Turing complete language, Brainfuck is theoretically capable of computing any computable function or simulating any other computational model, if given access to an unlimited amount of memory. These, as well as Brainfuck's inefficiency and its limited input/output capabilities, are some of the reasons it is not used for serious programming. This is partly because any mildly complex task requires a long sequence of commands and partly because the program's text gives no direct indications of the program's state. Increment the data pointer (to point to the next cell to the right).Īs the name suggests, Brainfuck programs tend to be difficult to comprehend. The eight language commands each consist of a single character: The brainfuck language uses a simple machine model consisting of the program and instruction pointer, as well as a one-dimensional array of at least 30,000 byte cells initialized to zero a movable data pointer (initialized to point to the leftmost byte of the array) and two streams of bytes for input and output (most often connected to a keyboard and a monitor respectively, and using the ASCII character encoding). The program terminates when the instruction pointer moves past the last command. The commands are executed sequentially, with some exceptions: an instruction pointer begins at the first command, and each command it points to is executed, after which it normally moves forward to the next command. A brainfuck program is a sequence of these commands, possibly interspersed with other characters (which are ignored). ![]() The language consists of eight commands, listed below. Melzac, whose one instruction set computer is equivalent to an Infinite Abacus, gives programs for multiplication, gcd, n th prime number, representation in base b, sorting by magnitude, and shows how to simulate an arbitrary Turing machine. His machine was simulated by Melzac's machine modeling computation via arithmetic (rather than binary logic) mimicking a human operator moving pebbles on an abacus, hence the requirement that all numbers must be positive. He proves the Infinite Abacus can compute any computable recursive function by programming Kleene set of basic μ-recursive function.
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