Brainfunk

Overview

Brainfunk is derivative of Brainfuck language with aims to:

• Unify cell pointer and cell increment and decrement operations to single + and - operations. Remove > and < operations.
• Introduce fast copy instruction usable between all address spaces.

Command	Description
+	Increment value
-	Decrement value
[	Jump past the matching ] if the value is 0
]	Jump back to the matching [ if the value is nonzero
#	Switch value to memory space
&	Switch value to pointer space
$	Switch value to I/O space
@	Switch value to accumulator space
%	Copy from previous memory space to current space

Brainfuck comparison

Description	Brainfuck	Brainfunk
Increment value	+	#+
Decrement value	-	#-
Move the pointer to the right	<	&+
Move the pointer to the left	>	&-
Write cell to output	.	#$%
Read input to cell	,	$#%
Skip loop if cell is zero	[	[
Loop back if cell is nonzero	]	]
Cat	,[.,]	$#%[$%#%]
Clear value	[-]	#[-]
Move value	>[-]<[->+<]	&+#[-]&-#[-&+#+&-#]
Copy value	>[-]>[-]<<[->+>+<<]>>[-<<+>>]	#@%&+@#%
Swap value	>[-]<<[->>+<<]>[-<+>]>[-<+>]	#@%&++@#%&-#@%&-@#%&++#@%&-@#%