From 70df09b76d1a13a55de1ebe6834ee359f403be89 Mon Sep 17 00:00:00 2001
From: Gael Guennebaud <g.gael@free.fr>
Date: Mon, 24 Oct 2011 09:31:33 +0200
Subject: move DynamicSparseMatrix to SparseExtra

---
 Eigen/src/Sparse/SparseDenseProduct.h | 23 ++++++++++++++++++++++-
 1 file changed, 22 insertions(+), 1 deletion(-)

(limited to 'Eigen/src/Sparse/SparseDenseProduct.h')

diff --git a/Eigen/src/Sparse/SparseDenseProduct.h b/Eigen/src/Sparse/SparseDenseProduct.h
index 0f77aa5be..dda14bc13 100644
--- a/Eigen/src/Sparse/SparseDenseProduct.h
+++ b/Eigen/src/Sparse/SparseDenseProduct.h
@@ -167,8 +167,11 @@ class SparseTimeDenseProduct
       typedef typename internal::remove_all<Rhs>::type _Rhs;
       typedef typename _Lhs::InnerIterator LhsInnerIterator;
       enum { LhsIsRowMajor = (_Lhs::Flags&RowMajorBit)==RowMajorBit };
-      for(Index j=0; j<m_lhs.outerSize(); ++j)
+      Index j=0;
+//#pragma omp parallel for private(j) schedule(static,4)
+      for(j=0; j<m_lhs.outerSize(); ++j)
       {
+        //kernel(dest,alpha,j);
         typename Rhs::Scalar rhs_j = alpha * m_rhs.coeff(LhsIsRowMajor ? 0 : j,0);
         typename Dest::RowXpr dest_j(dest.row(LhsIsRowMajor ? j : 0));
         for(LhsInnerIterator it(m_lhs,j); it ;++it)
@@ -181,6 +184,24 @@ class SparseTimeDenseProduct
     }
 
   private:
+    template<typename Dest>
+    EIGEN_DONT_INLINE void kernel(Dest& dest, Scalar alpha, int j) const
+    {
+      typedef typename internal::remove_all<Lhs>::type _Lhs;
+      typedef typename internal::remove_all<Rhs>::type _Rhs;
+      typedef typename _Lhs::InnerIterator LhsInnerIterator;
+      enum { LhsIsRowMajor = (_Lhs::Flags&RowMajorBit)==RowMajorBit };
+      {
+        typename Rhs::Scalar rhs_j = alpha * m_rhs.coeff(LhsIsRowMajor ? 0 : j,0);
+        typename Dest::RowXpr dest_j(dest.row(LhsIsRowMajor ? j : 0));
+        for(LhsInnerIterator it(m_lhs,j); it ;++it)
+        {
+          if(LhsIsRowMajor)                   dest_j += (alpha*it.value()) * m_rhs.row(it.index());
+          else if(Rhs::ColsAtCompileTime==1)  dest.coeffRef(it.index()) += it.value() * rhs_j;
+          else                                dest.row(it.index()) += (alpha*it.value()) * m_rhs.row(j);
+        }
+      }
+    }
     SparseTimeDenseProduct& operator=(const SparseTimeDenseProduct&);
 };
 
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