From: Matthijs Kooijman <m.kooijman@student.utwente.nl>
Date: Wed, 21 Jan 2009 12:37:56 +0000 (+0100)
Subject: Add a haskell model for a half adder.
X-Git-Url: https://git.stderr.nl/gitweb?p=matthijs%2Fmaster-project%2Fc%CE%BBash.git;a=commitdiff_plain;h=0b54fb07697815cb343e7f217b1bd8362365f22d

Add a haskell model for a half adder.
---

diff --git a/Adders.hs b/Adders.hs
index c49ba81..2e8cf35 100644
--- a/Adders.hs
+++ b/Adders.hs
@@ -15,6 +15,12 @@ show_add f = do print ("Sum:   " ++ (displaysigs s)); print ("Carry: " ++ (displ
 no_carry_adder :: (Bit, Bit) -> Bit
 no_carry_adder (a, b) = a `hwxor` b
 
+-- Combinatoric half adder
+-- A -> B -> (S, C)
+half_adder :: (Bit, Bit) -> (Bit, Bit)
+half_adder (a, b) = 
+  ( a `hwxor` b, a `hwand` b )
+
 -- Combinatoric (one-bit) full adder
 -- (A, B, C) -> (S, C)
 full_adder :: (Bit, Bit, Bit) -> (Bit, Bit)