From 559320745e87984fd863b535932105177e5ad795 Mon Sep 17 00:00:00 2001
From: Gael Guennebaud <g.gael@free.fr>
Date: Fri, 15 Feb 2019 10:30:28 +0100
Subject: [PATCH] bug #1678: Fix lack of __FMA__ macro on MSVC with AVX512

---
 Eigen/src/Core/util/ConfigureVectorization.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/Eigen/src/Core/util/ConfigureVectorization.h b/Eigen/src/Core/util/ConfigureVectorization.h
index 68765d4b2..b00d8b038 100644
--- a/Eigen/src/Core/util/ConfigureVectorization.h
+++ b/Eigen/src/Core/util/ConfigureVectorization.h
@@ -261,7 +261,7 @@
       #define EIGEN_VECTORIZE_FMA
     #endif
     #if defined(__AVX512F__)
-      #ifndef __FMA__
+      #ifndef EIGEN_VECTORIZE_FMA
       #if EIGEN_COMP_GNUC
       #error Please add -mfma to your compiler flags: compiling with -mavx512f alone without SSE/AVX FMA is not supported (bug 1638).
       #else