From 2b15e001068f548b852d58472b9b29f1a7bf1a2c Mon Sep 17 00:00:00 2001
From: Gael Guennebaud <g.gael@free.fr>
Date: Mon, 19 Aug 2013 16:40:50 +0200
Subject: Make ArrayBase operator+=(scalar) and -=(scalar) use
 SelfCwiseBinaryOp optimization

---
 Eigen/src/Core/SelfCwiseBinaryOp.h | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)

(limited to 'Eigen/src/Core/SelfCwiseBinaryOp.h')

diff --git a/Eigen/src/Core/SelfCwiseBinaryOp.h b/Eigen/src/Core/SelfCwiseBinaryOp.h
index 96012eaf8..3d2deff98 100644
--- a/Eigen/src/Core/SelfCwiseBinaryOp.h
+++ b/Eigen/src/Core/SelfCwiseBinaryOp.h
@@ -177,6 +177,24 @@ inline Derived& DenseBase<Derived>::operator*=(const Scalar& other)
   return derived();
 }
 
+template<typename Derived>
+inline Derived& ArrayBase<Derived>::operator+=(const Scalar& other)
+{
+  typedef typename Derived::PlainObject PlainObject;
+  SelfCwiseBinaryOp<internal::scalar_sum_op<Scalar>, Derived, typename PlainObject::ConstantReturnType> tmp(derived());
+  tmp = PlainObject::Constant(rows(),cols(),other);
+  return derived();
+}
+
+template<typename Derived>
+inline Derived& ArrayBase<Derived>::operator-=(const Scalar& other)
+{
+  typedef typename Derived::PlainObject PlainObject;
+  SelfCwiseBinaryOp<internal::scalar_difference_op<Scalar>, Derived, typename PlainObject::ConstantReturnType> tmp(derived());
+  tmp = PlainObject::Constant(rows(),cols(),other);
+  return derived();
+}
+
 template<typename Derived>
 inline Derived& DenseBase<Derived>::operator/=(const Scalar& other)
 {
-- 
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