\subsection{Higher order CPU}
\begin{code}
-fu op inputs (addr1, addr2) regOut = (regIn, regOut)
+fu op inputs (addr1, addr2) = regIn
where
in1 = inputs!addr1
in2 = inputs!addr2
-> State [Word | 4] -> (State [Word | 4], Word)
cpu input addrs (State fuss) = (State fuss', out)
where
- fures = [ fu const inputs (addrs!0) (fuss!0)
+ fuss' = [ fu const inputs (addrs!0) (fuss!0)
, fu (+) inputs (addrs!1) (fuss!1)
, fu (-) inputs (addrs!2) (fuss!2)
, fu (*) inputs (addrs!3) (fuss!3)
]
- (fuss', outputs) = unzip fures
- inputs = 0 +> (1 +> (input +> outputs))
- out = head outputs
+ inputs = 0 +> (1 +> (input +> fuss))
+ out = head fuss
\end{code}
\section{Related work}