From 88654762da0df8f6837d58b994e78ffdf90fb408 Mon Sep 17 00:00:00 2001
From: Christoph Hertzberg <chtz@informatik.uni-bremen.de>
Date: Mon, 23 May 2016 10:03:03 +0200
Subject: [PATCH] Replace multiple constructors of half-type by a
 generic/templated constructor. This fixes an incompatibility with long
 double, exposed by the previous commit.

---
 Eigen/src/Core/arch/CUDA/Half.h | 17 +++--------------
 1 file changed, 3 insertions(+), 14 deletions(-)

diff --git a/Eigen/src/Core/arch/CUDA/Half.h b/Eigen/src/Core/arch/CUDA/Half.h
index d081c7392..5c44ee98f 100644
--- a/Eigen/src/Core/arch/CUDA/Half.h
+++ b/Eigen/src/Core/arch/CUDA/Half.h
@@ -72,22 +72,11 @@ struct half : public __half {
 
   explicit EIGEN_DEVICE_FUNC half(bool b)
       : __half(internal::raw_uint16_to_half(b ? 0x3c00 : 0)) {}
-  explicit EIGEN_DEVICE_FUNC half(unsigned int ui)
-      : __half(internal::float_to_half_rtne(static_cast<float>(ui))) {}
-  explicit EIGEN_DEVICE_FUNC half(int i)
-      : __half(internal::float_to_half_rtne(static_cast<float>(i))) {}
-  explicit EIGEN_DEVICE_FUNC half(unsigned long ul)
-      : __half(internal::float_to_half_rtne(static_cast<float>(ul))) {}
-  explicit EIGEN_DEVICE_FUNC half(long l)
-      : __half(internal::float_to_half_rtne(static_cast<float>(l))) {}
-  explicit EIGEN_DEVICE_FUNC half(long long ll)
-      : __half(internal::float_to_half_rtne(static_cast<float>(ll))) {}
-  explicit EIGEN_DEVICE_FUNC half(unsigned long long ull)
-      : __half(internal::float_to_half_rtne(static_cast<float>(ull))) {}
+  template<class T>
+  explicit EIGEN_DEVICE_FUNC half(const T& x)
+      : __half(internal::float_to_half_rtne(static_cast<float>(x))) {}
   explicit EIGEN_DEVICE_FUNC half(float f)
       : __half(internal::float_to_half_rtne(f)) {}
-  explicit EIGEN_DEVICE_FUNC half(double d)
-      : __half(internal::float_to_half_rtne(static_cast<float>(d))) {}
 
   EIGEN_DEVICE_FUNC EIGEN_EXPLICIT_CAST(bool) const {
     // +0.0 and -0.0 become false, everything else becomes true.