From 6759a21e49614dd7cd977e3c1fd782458f33fc9f Mon Sep 17 00:00:00 2001
From: Gael Guennebaud <g.gael@free.fr>
Date: Wed, 28 Oct 2015 16:49:15 +0100
Subject: [PATCH] CUDA support: define more accurate min/max values for
 device::numeric_limits of float and double using values from cfloat header

---
 Eigen/src/Core/util/Meta.h | 10 +++++++---
 1 file changed, 7 insertions(+), 3 deletions(-)

diff --git a/Eigen/src/Core/util/Meta.h b/Eigen/src/Core/util/Meta.h
index 6eb409194..ef35cefb4 100644
--- a/Eigen/src/Core/util/Meta.h
+++ b/Eigen/src/Core/util/Meta.h
@@ -11,6 +11,10 @@
 #ifndef EIGEN_META_H
 #define EIGEN_META_H
 
+#if defined(__CUDA_ARCH__)
+#include <cfloat>
+#endif
+
 namespace Eigen {
 
 namespace internal {
@@ -138,16 +142,16 @@ template<> struct numeric_limits<float>
   EIGEN_DEVICE_FUNC
   static float (max)() { return CUDART_MAX_NORMAL_F; }
   EIGEN_DEVICE_FUNC
-  static float (min)() { return __FLT_EPSILON__; }
+  static float (min)() { return FLT_MIN; }
 };
 template<> struct numeric_limits<double>
 {
   EIGEN_DEVICE_FUNC
   static double epsilon() { return __DBL_EPSILON__; }
   EIGEN_DEVICE_FUNC
-  static double (max)() { return CUDART_INF; }
+  static double (max)() { return DBL_MAX; }
   EIGEN_DEVICE_FUNC
-  static double (min)() { return __DBL_EPSILON__; }
+  static double (min)() { return DBL_MIN; }
 };
 template<> struct numeric_limits<int>
 {