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, 163 insertions, 0 deletions

diff --git a/tvmet-1.7.1/include/tvmet/CommaInitializer.h b/tvmet-1.7.1/include/tvmet/CommaInitializer.h
new file mode 100644
index 000000000..bb3c640ca
--- /dev/null
+++ b/tvmet-1.7.1/include/tvmet/CommaInitializer.h
@@ -0,0 +1,163 @@
+/*
+ * 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: CommaInitializer.h,v 1.14 2005/03/02 12:14:22 opetzold Exp $
+ */
+
+#ifndef TVMET_COMMA_INITIALIZER_H
+#define TVMET_COMMA_INITIALIZER_H
+
+#include <tvmet/CompileTimeError.h>
+
+namespace tvmet {
+
+
+/**
+ * \class CommaInitializer CommaInitializer.h "tvmet/CommaInitializer.h"
+ * \brief Initialize classes using a comma separated lists.
+ *
+ * The comma operator is called when it appears next to an object of
+ * the type the comma is defined for. However, "operator," is not called
+ * for function argument lists, only for objects that are out in the open,
+ * separated by commas (Thinking C++
+ * <a href=http://www.ida.liu.se/~TDDA14/online/v1ticpp/Chapter12.html>
+ * Ch.12: Operator comma</a>).
+ *
+ * This implementation uses the same technique as described in Todd Veldhuizen
+ * Techniques for Scientific C++
+ * <a href=http://extreme.indiana.edu/~tveldhui/papers/techniques/techniques01.html#l43>
+ * chapter 1.11 Comma overloading</a>.
+ *
+ * The initializer list is avaible after instanciation of the object,
+ * therefore use it like:
+ * \code
+ * vector3d t;
+ * t = 1.0, 2.0, 3.0;
+ * \endcode
+ * It's evaluated to (((t = 1.0), 2.0), 3.0)
+ *
+ * For matrizes the initilization is done row wise.
+ *
+ * If the comma separted list of values longer then the size of the vector
+ * or matrix a compile time error will occour. Otherwise the pending values
+ * will be written random into the memory.
+ *
+ */
+template<class Obj, std::size_t LEN>
+class CommaInitializer
+{
+  CommaInitializer();
+  CommaInitializer& operator=(const CommaInitializer&);
+
+private:
+  /**
+   * \class Initializer
+   * \brief Helper fo recursive overloaded comma operator.
+   */
+  template<class T, std::size_t N> class Initializer
+  {
+    Initializer();
+    Initializer& operator=(const Initializer&);
+
+  public:
+    typedef T						value_type;
+    typedef T*						iterator;
+
+  public:
+    Initializer(iterator iter) : m_iter(iter) { }
+
+    /** Overloads the comma operator for recursive assign values from comma
+	separated list. */
+    Initializer<value_type, N+1> operator,(value_type rhs)
+    {
+      TVMET_CT_CONDITION(N < LEN, CommaInitializerList_is_too_long)
+      *m_iter = rhs;
+      return Initializer<value_type, N+1>(m_iter + 1);
+    }
+
+  private:
+    iterator 						m_iter;
+  };
+
+public:
+  typedef typename Obj::value_type 			value_type;
+  typedef value_type*					iterator;
+
+public:
+  CommaInitializer(const CommaInitializer& rhs)
+    : m_object(rhs.m_object),
+      m_data(rhs.m_data),
+      m_wipeout_on_destruct(true)
+  {
+    rhs.disable();
+  }
+
+  /** Constructor used by Vector or Matrix operator(value_type rhs) */
+  CommaInitializer(Obj& obj, value_type x)
+    : m_object(obj),
+      m_data(x),
+      m_wipeout_on_destruct(true)
+  { }
+
+  /** Destructs and assigns the comma separated value. */
+  ~CommaInitializer() {
+    if(m_wipeout_on_destruct) m_object.assign_value(m_data);
+  }
+
+  /** Overloaded comma operator, called only once for the first occoured comma. This
+      means the first value is assigned by %operator=() and the 2nd value after the
+      comma. Therfore we call the %Initializer::operator,() for the list starting
+      after the 2nd. */
+  Initializer<value_type, 2> operator,(value_type rhs);
+
+  void disable() const { m_wipeout_on_destruct = false; }
+
+private:
+  Obj& 							m_object;
+  value_type 						m_data;
+  mutable bool 						m_wipeout_on_destruct;
+};
+
+
+/*
+ * Implementation
+ */
+template<class Obj, std::size_t LEN>
+typename CommaInitializer<Obj, LEN>::template Initializer<typename Obj::value_type, 2>
+CommaInitializer<Obj, LEN>::operator,(typename Obj::value_type rhs)
+{
+  m_wipeout_on_destruct = false;
+  iterator iter1 = m_object.data();
+  *iter1         = m_data;
+  iterator iter2 = iter1 + 1;
+  *iter2         = rhs;
+  return Initializer<value_type, 2>(iter2 + 1);
+}
+
+
+
+} // namespace tvmet
+
+
+#endif //  TVMET_COMMA_INITIALIZER_H
+
+// Local Variables:
+// mode:C++
+// End: