Add initial implementation for UE6 A5
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@ -96,15 +96,36 @@ instance Eq MatrixF where
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-- Aufgabe A.5
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instance Num MatrixF where
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(Mf t1 f1) + (Mf t2 f2) = error "Nicht implementiert!"
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(Mf t1 f1) - (Mf t2 f2) = error "Nicht implementiert!"
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(Mf t1 f1) * (Mf t2 f2) = error "Nicht implementiert!"
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negate (Mf t f) = error "Nicht implementiert!"
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abs (Mf t f) = error "Nicht implementiert!"
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signum (Mf t f) = error "Nicht implementiert!"
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fromInteger n = error "Nicht implementiert!"
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(Mf t1 f1) + (Mf t2 f2) = if t1 == t2 then Mf t1 (\x y -> (f1 x y) + (f2 x y)) else fehler
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(Mf t1 f1) - (Mf t2 f2) = if t1 == t2 then Mf t1 (\x y -> (f1 x y) - (f2 x y)) else fehler
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(Mf t1 f1) * (Mf t2 f2) = if snd t1 == fst t2 then Mf (fst t1, snd t2) (\x y -> (f1 x y) * (f2 x y)) else fehler
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negate (Mf t f) = if is_correct_matrix(Mf t f) then Mf t (\x y -> -(f x y)) else fehler
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abs (Mf t f) = if is_correct_matrix(Mf t f) then Mf t (\x y -> abs(f x y)) else fehler
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signum (Mf t f) = sign (Mf t f)
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fromInteger n = Mf (1,1) (\x y -> fromIntegral(n))
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sign :: MatrixF -> MatrixF
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sign (Mf t f)
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| not(is_correct_matrix(Mf t f)) = error "Vorzeichenfunktion undefiniert"
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| True `elem` negative =
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if False `elem` negative then error "Vorzeichenfunktion undefiniert"
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else Mf (1,1) (\x y -> -1)
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| True `elem` positive =
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if False `elem` positive then error "Vorzeichenfunktion undefiniert"
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else Mf (1,1) (\x y -> 1)
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| True `elem` nulls =
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if False `elem` nulls then error "Vorzeichenfunktion undefiniert"
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else Mf (1,1) (\x y -> 0)
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| otherwise = error "Vorzeichenfunktion undefiniert"
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where
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m = (Mf t f)
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m' = construct_matrix m 1 []
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negative = boolMatrixToList (map (map (<0)) m') []
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nulls = boolMatrixToList (map (map (==0)) m') []
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positive = boolMatrixToList (map (map (>0)) m') []
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{- Knapp, aber gut nachvollziehbar geht die Instanzbildung fuer Num folgendermassen vor:
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...
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-}
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boolMatrixToList :: [[Bool]] -> [Bool] -> [Bool]
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boolMatrixToList (m:ms) res
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| null m = res
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| length m /= 0 && null ms = res ++ m
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| otherwise = boolMatrixToList ms (res ++ m)
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