------------------------------------------------------------
{- |
Module      :  Numeric.GSL.Special.Log
Copyright   :  (c) Alberto Ruiz 2006
License     :  GPL-style
Maintainer  :  Alberto Ruiz (aruiz at um dot es)
Stability   :  provisional
Portability :  uses ffi

Wrappers for selected functions described at:

<http://www.gnu.org/software/gsl/manual/html_node/Logarithm-and-Related-Functions.html>

-}
------------------------------------------------------------

module Numeric.GSL.Special.Log(
  log_e
, Numeric.GSL.Special.Log.log
, log_abs_e
, log_abs
, log_1plusx_e
, log_1plusx
, log_1plusx_mx_e
, log_1plusx_mx
) where

import Foreign(Ptr)
import Numeric.GSL.Special.Internal

-- | wrapper for int gsl_sf_log_e(double x,gsl_sf_result* result);
log_e :: Double -> (Double,Double)
log_e x = createSFR "log_e" $ gsl_sf_log_e x
foreign import ccall "log.h gsl_sf_log_e" gsl_sf_log_e :: Double -> Ptr Double -> IO(Int)

-- | wrapper for double gsl_sf_log(double x);
log :: Double -> Double
log = gsl_sf_log
foreign import ccall "log.h gsl_sf_log" gsl_sf_log :: Double -> Double

-- | wrapper for int gsl_sf_log_abs_e(double x,gsl_sf_result* result);
log_abs_e :: Double -> (Double,Double)
log_abs_e x = createSFR "log_abs_e" $ gsl_sf_log_abs_e x
foreign import ccall "log.h gsl_sf_log_abs_e" gsl_sf_log_abs_e :: Double -> Ptr Double -> IO(Int)

-- | wrapper for double gsl_sf_log_abs(double x);
log_abs :: Double -> Double
log_abs = gsl_sf_log_abs
foreign import ccall "log.h gsl_sf_log_abs" gsl_sf_log_abs :: Double -> Double

-- | wrapper for int gsl_sf_complex_log_e(double zr,double zi,gsl_sf_result* lnr,gsl_sf_result* theta);
complex_log_e :: Double -> Double -> Ptr Double -> (Double,Double)
complex_log_e zr zi lnr = createSFR "complex_log_e" $ gsl_sf_complex_log_e zr zi lnr
foreign import ccall "log.h gsl_sf_complex_log_e" gsl_sf_complex_log_e :: Double -> Double -> Ptr Double -> Ptr Double -> IO(Int)

-- | wrapper for int gsl_sf_log_1plusx_e(double x,gsl_sf_result* result);
log_1plusx_e :: Double -> (Double,Double)
log_1plusx_e x = createSFR "log_1plusx_e" $ gsl_sf_log_1plusx_e x
foreign import ccall "log.h gsl_sf_log_1plusx_e" gsl_sf_log_1plusx_e :: Double -> Ptr Double -> IO(Int)

-- | wrapper for double gsl_sf_log_1plusx(double x);
log_1plusx :: Double -> Double
log_1plusx = gsl_sf_log_1plusx
foreign import ccall "log.h gsl_sf_log_1plusx" gsl_sf_log_1plusx :: Double -> Double

-- | wrapper for int gsl_sf_log_1plusx_mx_e(double x,gsl_sf_result* result);
log_1plusx_mx_e :: Double -> (Double,Double)
log_1plusx_mx_e x = createSFR "log_1plusx_mx_e" $ gsl_sf_log_1plusx_mx_e x
foreign import ccall "log.h gsl_sf_log_1plusx_mx_e" gsl_sf_log_1plusx_mx_e :: Double -> Ptr Double -> IO(Int)

-- | wrapper for double gsl_sf_log_1plusx_mx(double x);
log_1plusx_mx :: Double -> Double
log_1plusx_mx = gsl_sf_log_1plusx_mx
foreign import ccall "log.h gsl_sf_log_1plusx_mx" gsl_sf_log_1plusx_mx :: Double -> Double