∠fuck

∠fuck is an esolang invented by User:None1. It is derived from brainfuck.

Tape

The tape can contain unbounded real numbers.

All cells are 1 at the start, unlike brainfuck.

Commands

$p$ represents the current cell value.

< >: The same in bf

+: $p\leftarrow \tan(p\ rad)$

-: $p\leftarrow \arctan(p\ rad)$

[CODE]: While $p$ isn't 1, do CODE

,: Input a character, if its extended ASCII value is $a$, then set the current cell value to $-\log _{2}(1-{\frac {a}{256}})$

.: Output a character which has the extended ASCII value of $\lfloor 256(1-2^{-|x|})+0.5\rfloor$

EOF returns 1.

Examples

Cat Program

,[.,]

Computational class

Turing-complete, because brainfuck with bit cells is Turing complete, and in ∠fuck, we can use $1$ for 0 and $\tan(1\ rad)$ for 1.