test modules reorganized

1 files changed, 50 insertions, 0 deletions

diff --git a/lib/Numeric/LinearAlgebra/Tests/Properties.hs b/lib/Numeric/LinearAlgebra/Tests/Properties.hs
new file mode 100644
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+++ b/lib/Numeric/LinearAlgebra/Tests/Properties.hs
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+{-# OPTIONS #-}
+-----------------------------------------------------------------------------
+{- |
+Module      :  Numeric.LinearAlgebra.Tests.Properties
+Copyright   :  (c) Alberto Ruiz 2008
+License     :  GPL-style
+
+Maintainer  :  Alberto Ruiz (aruiz at um dot es)
+Stability   :  provisional
+Portability :  portable
+
+Arbitrary instances for vectors, matrices.
+
+-}
+
+module Numeric.LinearAlgebra.Tests.Properties
+
+where
+
+import Numeric.LinearAlgebra
+import Numeric.LinearAlgebra.Tests.Instances(Sq(..),Her(..),Rot(..))
+
+-- relative error
+dist :: (Normed t, Num t) => t -> t -> Double
+dist a b = r
+    where norm = pnorm Infinity
+          na = norm a
+          nb = norm b
+          nab = norm (a-b)
+          mx = max na nb
+          mn = min na nb
+          r = if mn < eps
+                then mx
+                else nab/mx
+
+infixl 4 |~|
+--a |~| b = a :~10~: b
+a |~| b = dist a b < 10^^(-10)
+
+--data Aprox a = (:~) a Int
+--(~:) :: (Normed a, Num a) => Aprox a -> a -> Bool
+--a :~n~: b = dist a b < 10^^(-n)
+
+------------------------------------------------------
+
+square m = rows m == cols m
+
+unitary m = square m && m <> ctrans m |~| ident (rows m)
+
+hermitian m = square m && m |~| ctrans m