1 files changed, 40 insertions, 0 deletions

diff --git a/packages/special/lib/Numeric/GSL/Special/Lambert.hs b/packages/special/lib/Numeric/GSL/Special/Lambert.hs
new file mode 100644
index 0000000..b229bf6
--- /dev/null
+++ b/packages/special/lib/Numeric/GSL/Special/Lambert.hs
@@ -0,0 +1,40 @@
+------------------------------------------------------------
+-- |
+-- Module      :  Numeric.GSL.Special.Lambert
+-- Copyright   :  (c) Alberto Ruiz 2006
+-- License     :  GPL
+-- Maintainer  :  Alberto Ruiz (aruiz at um dot es)
+-- Stability   :  provisional
+-- Portability :  uses ffi
+--
+-- Wrappers for selected functions described at:
+--
+-- <http://www.google.com/search?q=gsl_sf_lambert.h&as_sitesearch=www.gnu.org/software/gsl/manual&btnI=Lucky>
+------------------------------------------------------------
+
+module Numeric.GSL.Special.Lambert(
+  lambert_W0_e
+, lambert_W0
+, lambert_Wm1_e
+, lambert_Wm1
+) where
+
+import Foreign(Ptr)
+import Foreign.C.Types(CInt)
+import Numeric.GSL.Special.Internal
+
+lambert_W0_e :: Double -> (Double,Double)
+lambert_W0_e x = createSFR "lambert_W0_e" $ gsl_sf_lambert_W0_e x
+foreign import ccall SAFE_CHEAP "gsl_sf_lambert_W0_e" gsl_sf_lambert_W0_e :: Double -> Ptr () -> IO CInt
+
+lambert_W0 :: Double -> Double
+lambert_W0 = gsl_sf_lambert_W0
+foreign import ccall SAFE_CHEAP "gsl_sf_lambert_W0" gsl_sf_lambert_W0 :: Double -> Double
+
+lambert_Wm1_e :: Double -> (Double,Double)
+lambert_Wm1_e x = createSFR "lambert_Wm1_e" $ gsl_sf_lambert_Wm1_e x
+foreign import ccall SAFE_CHEAP "gsl_sf_lambert_Wm1_e" gsl_sf_lambert_Wm1_e :: Double -> Ptr () -> IO CInt
+
+lambert_Wm1 :: Double -> Double
+lambert_Wm1 = gsl_sf_lambert_Wm1
+foreign import ccall SAFE_CHEAP "gsl_sf_lambert_Wm1" gsl_sf_lambert_Wm1 :: Double -> Double