From: Matthijs Kooijman Date: Thu, 25 Jun 2009 14:45:30 +0000 (+0200) Subject: Add a anyset operation to HighOrdAlu, using foldl. X-Git-Url: https://git.stderr.nl/gitweb?a=commitdiff_plain;h=85a89721bf286e8bef30f845d5c1067b64c73249;p=matthijs%2Fmaster-project%2Fc%CE%BBash.git Add a anyset operation to HighOrdAlu, using foldl. --- diff --git a/HighOrdAlu.hs b/HighOrdAlu.hs index f49d511..331fa1d 100644 --- a/HighOrdAlu.hs +++ b/HighOrdAlu.hs @@ -19,6 +19,15 @@ invop a b = map hwnot a andop :: Op n Bit andop a b = zipWith hwand a b +-- Is any bit set? +--anyset :: (PositiveT n) => Op n Bit +anyset :: Op D4 Bit +--anyset a b = copy undefined (a' `hwor` b') +anyset a b = constant (a' `hwor` b') a b + where + a' = foldl hwor Low a + b' = foldl hwor Low b + type Op n e = (TFVec n e -> TFVec n e -> TFVec n e) type Opcode = Bit @@ -30,4 +39,4 @@ alu op1 op2 opc a b = actual_alu :: Opcode -> TFVec D4 Bit -> TFVec D4 Bit -> TFVec D4 Bit --actual_alu = alu (constant Low) andop -actual_alu = alu invop andop +actual_alu = alu anyset andop