Starting Eigen 2 development. The current plan is to use the last

release of tvmet (inactive for 2 years and developer unreachable) as the
basis for eigen2, because it provides seemingly good expression template
mechanisms, we want that, and it would take years to reinvent that
wheel. We'll see. So this commit imports the last tvmet release.

1 files changed, 134 insertions, 0 deletions

diff --git a/tvmet-1.7.1/include/tvmet/xpr/MMProduct.h b/tvmet-1.7.1/include/tvmet/xpr/MMProduct.h
new file mode 100644
index 000000000..d11c4dca1
--- /dev/null
+++ b/tvmet-1.7.1/include/tvmet/xpr/MMProduct.h
@@ -0,0 +1,134 @@
+/*
+ * Tiny Vector Matrix Library
+ * Dense Vector Matrix Libary of Tiny size using Expression Templates
+ *
+ * Copyright (C) 2001 - 2003 Olaf Petzold <opetzold@users.sourceforge.net>
+ *
+ * This library 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 2.1 of the License, or (at your option) any later version.
+ *
+ * This library 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 for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ *
+ * $Id: MMProduct.h,v 1.20 2004/09/16 09:14:18 opetzold Exp $
+ */
+
+#ifndef TVMET_XPR_MMPRODUCT_H
+#define TVMET_XPR_MMPRODUCT_H
+
+#include <tvmet/meta/Gemm.h>
+#include <tvmet/loop/Gemm.h>
+
+namespace tvmet {
+
+
+/**
+ * \class XprMMProduct MMProduct.h "tvmet/xpr/MMProduct.h"
+ * \brief Expression for matrix-matrix product.
+ *        Using formula:
+ *        \f[
+ *        M_1\,M_2
+ *        \f]
+ * \note The Rows2 has to be  equal to Cols1.
+ */
+template<class E1, std::size_t Rows1, std::size_t Cols1,
+	 class E2, std::size_t Cols2>
+class XprMMProduct
+  : public TvmetBase< XprMMProduct<E1, Rows1, Cols1, E2, Cols2> >
+{
+private:
+  XprMMProduct();
+  XprMMProduct& operator=(const XprMMProduct&);
+
+public:
+  typedef typename PromoteTraits<
+    typename E1::value_type,
+    typename E2::value_type
+  >::value_type							value_type;
+
+public:
+  /** Complexity counter. */
+  enum {
+    ops_lhs   = E1::ops,
+    ops_rhs   = E2::ops,
+    M         = Rows1 * Cols1 * Cols2,
+    N         = Rows1 * (Cols1 - 1) * Cols2,
+    ops_plus  = M * NumericTraits<value_type>::ops_plus,
+    ops_muls  = N * NumericTraits<value_type>::ops_muls,
+    ops       = ops_plus + ops_muls,
+    use_meta  = Rows1*Cols2 < TVMET_COMPLEXITY_MM_TRIGGER ? true : false
+  };
+
+public:
+  /** Constructor. */
+  explicit XprMMProduct(const E1& lhs, const E2& rhs)
+    : m_lhs(lhs), m_rhs(rhs)
+  { }
+
+  /** Copy Constructor. Not explicit! */
+#if defined(TVMET_OPTIMIZE_XPR_MANUAL_CCTOR)
+  XprMMProduct(const XprMMProduct& e)
+    : m_lhs(e.m_lhs), m_rhs(e.m_rhs)
+  { }
+#endif
+
+private:
+  /** Wrapper for meta gemm. */
+  static inline
+  value_type do_gemm(dispatch<true>, const E1& lhs, const E2& rhs, std::size_t i, std::size_t j) {
+    return meta::gemm<Rows1, Cols1,
+                      Cols2,
+                      0>::prod(lhs, rhs, i, j);
+  }
+
+  /** Wrapper for loop gemm. */
+  static inline
+  value_type do_gemm(dispatch<false>, const E1& lhs, const E2& rhs, std::size_t i, std::size_t j) {
+    return loop::gemm<Rows1, Cols1, Cols2>::prod(lhs, rhs, i, j);
+  }
+
+public:
+  /** index operator for arrays/matrices */
+  value_type operator()(std::size_t i, std::size_t j) const {
+    TVMET_RT_CONDITION((i < Rows1) && (j < Cols2), "XprMMProduct Bounce Violation")
+    return do_gemm(dispatch<use_meta>(), m_lhs, m_rhs, i, j);
+  }
+
+public: // debugging Xpr parse tree
+  void print_xpr(std::ostream& os, std::size_t l=0) const {
+    os << IndentLevel(l++)
+       << "XprMMProduct["
+       << (use_meta ? "M" :  "L") << ", O=" << ops
+       << ", (O1=" << ops_lhs << ", O2=" << ops_rhs << ")]<"
+       << std::endl;
+    m_lhs.print_xpr(os, l);
+    os << IndentLevel(l)
+       << "R1=" << Rows1 << ", C1=" << Cols1 << ",\n";
+    m_rhs.print_xpr(os, l);
+    os << IndentLevel(l)
+       << "C2=" << Cols2 << ",\n";
+    os << IndentLevel(--l)
+       << ">," << std::endl;
+  }
+
+private:
+  const E1		 				m_lhs;
+  const E2		 				m_rhs;
+};
+
+
+} // namespace tvmet
+
+#endif // TVMET_XPR_MMPRODUCT_H
+
+// Local Variables:
+// mode:C++
+// End: