Brainfuck^
Brainfuck^ by User:Password is vanilla brainfuck with a few additional commands, more specifically the additional commands are pointer versions of the existing ones.
As a refresher, the standard commands are:
| Command | Description |
|---|---|
>
|
Move the pointer to the right |
<
|
Move the pointer to the left |
+
|
Increment the memory cell under the pointer |
-
|
Decrement the memory cell under the pointer |
.
|
Output the character signified by the cell at the pointer |
,
|
Input a character and store it in the cell at the pointer |
[
|
Jump past the matching ] if the cell under the pointer is 0
|
]
|
Jump back to the matching [ if the cell under the pointer is nonzero
|
and the extended commands are:
| Command | Description |
|---|---|
}
|
Increment the memory cell which the current cell refers to |
{
|
Decrement the memory cell which the current cell refers to |
(
|
Jump past the matching ) if the cell which the current cell points to is 0
|
)
|
Jump back to the matching ( if the cell which the current cell points to is nonzero
|
Examples
Here's a list of some basic programs.
If you set memory like this ( |n| denotes the pointer position, the first address is zero always )
>+>+>+>+>+>+>+>+>+>+<<<<<<<<<< |0| 1 1 1 1 1 1 1 1 1 1
and you run +(+) it will show you the address of the first empty cell, i.e.
|11| 1 1 1 1 1 1 1 1 1 1
A more involved program is:
,>,>,>,>,>,<<<<<<-(-)-[({>+<)-]>!01020304050f
|30|
Let's break it down.
,>,>,>,>,>,<<<<<
sets up cell 0-5 with the hexadecimal values after the !.
<-(-)
moves the pointer to the last position on the tape, due to wrapping.
Then it loads the value of the first empty cell to the right.
-[({>+<)-]
then copies the last nonempty cell to cell0 and repeats until all cells are zero.
And here is a first attempt at a Fibonacci sequence using the pointers:
+++++++++++>+++>+>+<<<[->({+++}+}----)+++({---}+++)+({---}+++)-----({+++}+}----) +++({---}+++)+({--}++)--<]
Source code
Currently there is no library released. IF there is some interest I (User:Password) will consider either releasing the Qt class or an c++ only version.