From e1ecfc162d8390c29ae5c2943a2899fdd0bffe71 Mon Sep 17 00:00:00 2001
From: Rasmus Munk Larsen <rmlarsen@google.com>
Date: Fri, 10 Jan 2020 21:14:08 +0000
Subject: [PATCH] call Explicitly ::rint and ::rintf for targets without c++11.
 Without this, the Windows build breaks when trying to compile
 numext::rint<double>.

---
 Eigen/src/Core/MathFunctions.h | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/Eigen/src/Core/MathFunctions.h b/Eigen/src/Core/MathFunctions.h
index a681a3eb3..090ad43bd 100644
--- a/Eigen/src/Core/MathFunctions.h
+++ b/Eigen/src/Core/MathFunctions.h
@@ -450,11 +450,19 @@ struct rint_impl {
 
 #if !EIGEN_HAS_CXX11_MATH
 template<>
+struct rint_impl<double> {
+  EIGEN_DEVICE_FUNC
+  static inline double run(const double& x)
+  {
+    return ::rint(x);
+  }
+};
+template<>
 struct rint_impl<float> {
   EIGEN_DEVICE_FUNC
   static inline float run(const float& x)
   {
-    return rintf(x);
+    return ::rintf(x);
   }
 };
 #endif