From e21e29a08850e43402824c9cc6a29a59420e3701 Mon Sep 17 00:00:00 2001
From: Deanna Hood <deanna.m.hood@gmail.com>
Date: Tue, 17 Mar 2015 14:04:33 +1000
Subject: [PATCH] Update cost of arg call to depend on if the scalar is complex
 or not

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

diff --git a/Eigen/src/Core/functors/UnaryFunctors.h b/Eigen/src/Core/functors/UnaryFunctors.h
index 01fef88f2..c92692e53 100644
--- a/Eigen/src/Core/functors/UnaryFunctors.h
+++ b/Eigen/src/Core/functors/UnaryFunctors.h
@@ -139,7 +139,7 @@ template<typename Scalar>
 struct functor_traits<scalar_arg_op<Scalar> >
 {
   enum {
-    Cost = 5 * NumTraits<Scalar>::MulCost + NumTraits<Scalar>::AddCost,
+    Cost = NumTraits<Scalar>::IsComplex ? 5 * NumTraits<Scalar>::MulCost : NumTraits<Scalar>::AddCost,
     PacketAccess = packet_traits<Scalar>::HasArg
   };
 };