1 files changed, 17 insertions, 0 deletions

diff --git a/packages/base/src/Internal/Static.hs b/packages/base/src/Internal/Static.hs
index 0068313..419ff07 100644
--- a/packages/base/src/Internal/Static.hs
+++ b/packages/base/src/Internal/Static.hs
@@ -11,6 +11,7 @@
 {-# LANGUAGE FlexibleInstances #-}
 {-# LANGUAGE TypeOperators #-}
 {-# LANGUAGE ViewPatterns #-}
+{-# LANGUAGE BangPatterns #-}
 
 {- |
 Module      :  Internal.Static
@@ -28,6 +29,7 @@ import qualified Numeric.LinearAlgebra as LA
 import Numeric.LinearAlgebra hiding (konst,size,R,C)
 import Internal.Vector as D hiding (R,C)
 import Internal.ST
+import Control.DeepSeq
 import Data.Proxy(Proxy)
 import Foreign.Storable(Storable)
 import Text.Printf
@@ -50,6 +52,9 @@ lift2F
   -> Dim n (c t) -> Dim n (c t) -> Dim n (c t)
 lift2F f (Dim u) (Dim v) = Dim (f u v)
 
+instance NFData t => NFData (Dim n t) where
+    rnf (Dim (force -> !_)) = ()
+
 --------------------------------------------------------------------------------
 
 newtype R n = R (Dim n (Vector ℝ))
@@ -75,6 +80,18 @@ mkL x = L (Dim (Dim x))
 mkM :: Matrix ℂ -> M m n
 mkM x = M (Dim (Dim x))
 
+instance NFData (R n) where
+    rnf (R (force -> !_)) = ()
+
+instance NFData (C n) where
+    rnf (C (force -> !_)) = ()
+
+instance NFData (L n m) where
+    rnf (L (force -> !_)) = ()
+
+instance NFData (M n m) where
+    rnf (M (force -> !_)) = ()
+
 --------------------------------------------------------------------------------
 
 type V n t = Dim n (Vector t)