From 437191186165005e0b619c069239ac2913fd2c41 Mon Sep 17 00:00:00 2001
From: Gael Guennebaud <g.gael@free.fr>
Date: Mon, 8 Dec 2014 16:44:34 +0100
Subject: Remove useless and non standard numext::atanh2 function.

---
 Eigen/src/Core/MathFunctions.h | 38 --------------------------------------
 1 file changed, 38 deletions(-)

diff --git a/Eigen/src/Core/MathFunctions.h b/Eigen/src/Core/MathFunctions.h
index 72d6acfc1..16ad2dc7e 100644
--- a/Eigen/src/Core/MathFunctions.h
+++ b/Eigen/src/Core/MathFunctions.h
@@ -708,44 +708,6 @@ inline int log2(int x)
 
 } // end namespace numext
 
-
-namespace internal {
-
-/****************************************************************************
-* Implementation of atanh2                                                *
-****************************************************************************/
-
-template<typename Scalar>
-struct atanh2_impl
-{
-  static inline Scalar run(const Scalar& x, const Scalar& r)
-  {
-    EIGEN_STATIC_ASSERT_NON_INTEGER(Scalar)
-    typedef typename NumTraits<Scalar>::Real RealScalar;
-    return numext::log1p(RealScalar(2) * x / (r - x)) / RealScalar(2);
-  }
-};
-
-template<typename Scalar>
-struct atanh2_retval
-{
-  typedef Scalar type;
-};
-
-
-} // end namespace internal
-
-namespace numext {
-
-template<typename Scalar>
-EIGEN_DEVICE_FUNC
-inline EIGEN_MATHFUNC_RETVAL(atanh2, Scalar) atanh2(const Scalar& x, const Scalar& y)
-{
-  return EIGEN_MATHFUNC_IMPL(atanh2, Scalar)::run(x, y);
-}
-
-} // end namespace numext
-
 namespace internal {
 
 /****************************************************************************
-- 
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