Conversion, LAPACK -> base

1 files changed, 12 insertions, 1 deletions

diff --git a/packages/base/src/Data/Packed/Vector.hs b/packages/base/src/Data/Packed/Vector.hs
index b5a4318..653a257 100644
--- a/packages/base/src/Data/Packed/Vector.hs
+++ b/packages/base/src/Data/Packed/Vector.hs
@@ -18,7 +18,7 @@
 
 module Data.Packed.Vector (
     Vector,
-    fromList, (|>), toList, buildVector,
+    fromList, (|>), toList, buildVector, constant,
     dim, (@>),
     subVector, takesV, vjoin, join,
     mapVector, mapVectorWithIndex, zipVector, zipVectorWith, unzipVector, unzipVectorWith,
@@ -27,6 +27,7 @@ module Data.Packed.Vector (
 ) where
 
 import Data.Packed.Internal.Vector
+import Data.Packed.Internal.Matrix
 import Foreign.Storable
 
 -------------------------------------------------------------------
@@ -94,3 +95,13 @@ unzipVector = unzipVectorWith id
 join ::  Storable t => [Vector t] -> Vector t
 join = vjoin
 
+{- | creates a vector with a given number of equal components:
+
+@> constant 2 7
+7 |> [2.0,2.0,2.0,2.0,2.0,2.0,2.0]@
+-}
+constant :: Element a => a -> Int -> Vector a
+-- constant x n = runSTVector (newVector x n)
+constant = constantD-- about 2x faster
+
+