From f0862b062fcb613ee6c60745631d90a43d54a6d4 Mon Sep 17 00:00:00 2001
From: Gael Guennebaud <g.gael@free.fr>
Date: Tue, 22 May 2018 19:29:51 +0200
Subject: Fix internal::is_integral<size_t/ptrdiff_t> with MSVC 2013 and older.

---
 Eigen/src/Core/util/Meta.h | 4 ++++
 1 file changed, 4 insertions(+)

(limited to 'Eigen/src/Core/util/Meta.h')

diff --git a/Eigen/src/Core/util/Meta.h b/Eigen/src/Core/util/Meta.h
index 0c7b8e709..6e5af35c0 100755
--- a/Eigen/src/Core/util/Meta.h
+++ b/Eigen/src/Core/util/Meta.h
@@ -113,6 +113,10 @@ template<> struct is_integral<signed int>             { enum { value = true }; }
 template<> struct is_integral<unsigned int>           { enum { value = true }; };
 template<> struct is_integral<signed long>            { enum { value = true }; };
 template<> struct is_integral<unsigned long>          { enum { value = true }; };
+#if EIGEN_COMP_MSVC
+template<> struct is_integral<signed __int64>         { enum { value = true }; };
+template<> struct is_integral<unsigned __int64>       { enum { value = true }; };
+#endif
 #endif
 
 
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