added an *optional* Eigen2 dynamic library.

it allows the possiblity to save some compilation time by linking to it
*and* defining the token EIGEN_EXTERN_INSTANCIATIONS

3 files changed, 54 insertions, 1 deletions

diff --git a/Eigen/src/Core/CacheFriendlyProduct.h b/Eigen/src/Core/CacheFriendlyProduct.h
index 5e5d075b1..4a0e4e24a 100644
--- a/Eigen/src/Core/CacheFriendlyProduct.h
+++ b/Eigen/src/Core/CacheFriendlyProduct.h
@@ -349,5 +349,4 @@ static void ei_cache_friendly_product(
   }
 }
 
-
 #endif // EIGEN_CACHE_FRIENDLY_PRODUCT_H
diff --git a/Eigen/src/Core/CoreInstanciations.cpp b/Eigen/src/Core/CoreInstanciations.cpp
new file mode 100644
index 000000000..c5a0ba522
--- /dev/null
+++ b/Eigen/src/Core/CoreInstanciations.cpp
@@ -0,0 +1,47 @@
+// This file is part of Eigen, a lightweight C++ template library
+// for linear algebra. Eigen itself is part of the KDE project.
+//
+// Copyright (C) 2008 Gael Guennebaud <g.gael@free.fr>
+//
+// Eigen is free software; you can redistribute it and/or
+// modify it under the terms of the GNU Lesser General Public
+// License as published by the Free Software Foundation; either
+// version 3 of the License, or (at your option) any later version.
+//
+// Alternatively, you can redistribute it and/or
+// modify it under the terms of the GNU General Public License as
+// published by the Free Software Foundation; either version 2 of
+// the License, or (at your option) any later version.
+//
+// Eigen is distributed in the hope that it will be useful, but WITHOUT ANY
+// WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+// FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License or the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU Lesser General Public
+// License and a copy of the GNU General Public License along with
+// Eigen. If not, see <http://www.gnu.org/licenses/>.
+
+#ifdef EIGEN_EXTERN_INSTANCIATIONS
+#undef EIGEN_EXTERN_INSTANCIATIONS
+#endif
+
+#include "../../Core"
+
+namespace Eigen
+{
+
+#define EIGEN_INSTANCIATE_PRODUCT(TYPE) \
+template static void ei_cache_friendly_product<TYPE>( \
+  int _rows, int _cols, int depth, \
+  bool _lhsRowMajor, const TYPE* _lhs, int _lhsStride, \
+  bool _rhsRowMajor, const TYPE* _rhs, int _rhsStride, \
+  bool resRowMajor, TYPE* res, int resStride)
+
+EIGEN_INSTANCIATE_PRODUCT(float);
+EIGEN_INSTANCIATE_PRODUCT(double);
+EIGEN_INSTANCIATE_PRODUCT(int);
+EIGEN_INSTANCIATE_PRODUCT(std::complex<float>);
+EIGEN_INSTANCIATE_PRODUCT(std::complex<double>);
+
+}
diff --git a/Eigen/src/Core/util/ForwardDeclarations.h b/Eigen/src/Core/util/ForwardDeclarations.h
index 9fa3718d3..d48d4c325 100644
--- a/Eigen/src/Core/util/ForwardDeclarations.h
+++ b/Eigen/src/Core/util/ForwardDeclarations.h
@@ -75,6 +75,13 @@ template<typename Scalar> struct ei_scalar_min_op;
 template<typename Scalar> struct ei_scalar_max_op;
 template<typename Scalar> struct ei_scalar_random_op;
 
+template<typename Scalar>
+static void ei_cache_friendly_product(
+  int _rows, int _cols, int depth,
+  bool _lhsRowMajor, const Scalar* _lhs, int _lhsStride,
+  bool _rhsRowMajor, const Scalar* _rhs, int _rhsStride,
+  bool resRowMajor, Scalar* res, int resStride);
+
 template<typename ExpressionType, bool CheckExistence = true> class Inverse;
 template<typename MatrixType> class QR;