Diff: tvmet/meta/Matrix.h

Revision:

1:cc2a9eb0bd55

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/tvmet/meta/Matrix.h	Wed Oct 17 22:25:31 2012 +0000
@@ -0,0 +1,166 @@
+/*
+ * Tiny Vector Matrix Library
+ * Dense Vector Matrix Libary of Tiny size using Expression Templates
+ *
+ * Copyright (C) 2001 - 2007 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: Matrix.h,v 1.19 2007-06-23 15:58:59 opetzold Exp $
+ */
+
+#ifndef TVMET_META_MATRIX_H
+#define TVMET_META_MATRIX_H
+
+#include <tvmet/NumericTraits.h>
+#include <tvmet/xpr/Null.h>
+
+namespace tvmet {
+
+namespace meta {
+
+
+/**
+ * \class Matrix Matrix.h "tvmet/meta/Matrix.h"
+ * \brief Meta %Matrix class using expression and meta templates.
+ */
+template<std::size_t Rows, std::size_t Cols,
+	 std::size_t M=0, std::size_t N=0>
+class Matrix
+{
+  Matrix();
+  Matrix(const Matrix&);
+  Matrix& operator=(const Matrix&);
+
+private:
+  enum {
+    doRows = (M < Rows - 1) ? 1 : 0,	/**< recursive counter Rows. */
+    doCols = (N < Cols - 1) ? 1 : 0	/**< recursive counter Cols. */
+  };
+
+public:
+  /** assign an expression on columns on given row using the functional assign_fn. */
+  template<class Dest, class Src, class Assign>
+  static inline
+  void assign2(Dest& lhs, const Src& rhs, const Assign& assign_fn) {
+    assign_fn.apply_on(lhs(M, N), rhs(M, N));
+    Matrix<Rows * doCols, Cols * doCols,
+           M * doCols, (N+1) * doCols>::assign2(lhs, rhs, assign_fn);
+  }
+
+  /** assign an expression on row-wise using the functional assign_fn. */
+  template<class Dest, class Src, class Assign>
+  static inline
+  void assign(Dest& lhs, const Src& rhs, const Assign& assign_fn) {
+    Matrix<Rows, Cols,
+           M, 0>::assign2(lhs, rhs, assign_fn);
+    Matrix<Rows * doRows, Cols * doRows,
+          (M+1) * doRows, 0>::assign(lhs, rhs, assign_fn);
+  }
+
+  /** evaluate a given matrix expression, column wise. */
+  template<class E>
+  static inline
+  bool all_elements2(const E& e) {
+    if(!e(M, N)) return false;
+    return Matrix<Rows * doCols, Cols * doCols,
+                  M * doCols, (N+1) * doCols>::all_elements2(e);
+  }
+
+  /** evaluate a given matrix expression, row wise. */
+  template<class E>
+  static inline
+  bool all_elements(const E& e) {
+    if(!Matrix<Rows, Cols, M, 0>::all_elements2(e) ) return false;
+    return Matrix<Rows * doRows, Cols * doRows,
+                 (M+1) * doRows, 0>::all_elements(e);
+  }
+
+  /** evaluate a given matrix expression, column wise. */
+  template<class E>
+  static inline
+  bool any_elements2(const E& e) {
+    if(e(M, N)) return true;
+    return Matrix<Rows * doCols, Cols * doCols,
+                  M * doCols, (N+1) * doCols>::any_elements2(e);
+  }
+
+  /** evaluate a given matrix expression, row wise. */
+  template<class E>
+  static inline
+  bool any_elements(const E& e) {
+    if(Matrix<Rows, Cols, M, 0>::any_elements2(e) ) return true;
+    return Matrix<Rows * doRows, Cols * doRows,
+                 (M+1) * doRows, 0>::any_elements(e);
+  }
+
+  /** trace a given matrix expression. */
+  template<class E>
+  static inline
+  typename E::value_type
+  trace(const E& e) {
+    return e(M, N)
+      + Matrix<Rows * doCols, Cols * doCols,
+              (M+1) * doCols, (N+1) * doCols>::trace(e);
+  }
+
+};
+
+
+/**
+ * \class Matrix<0, 0, 0, 0> Matrix.h "tvmet/meta/Matrix.h"
+ * \brief Meta %Matrix specialized for recursion.
+ */
+template<>
+class Matrix<0, 0, 0, 0>
+{
+  Matrix();
+  Matrix(const Matrix&);
+  Matrix& operator=(const Matrix&);
+
+public:
+  template<class Dest, class Src, class Assign>
+  static inline void assign2(Dest&, const Src&, const Assign&) { }
+
+  template<class Dest, class Src, class Assign>
+  static inline void assign(Dest&, const Src&, const Assign&) { }
+
+  template<class E>
+  static inline bool all_elements2(const E&) { return true; }
+
+  template<class E>
+  static inline bool all_elements(const E&) { return true; }
+
+  template<class E>
+  static inline bool any_elements2(const E&) { return false; }
+
+  template<class E>
+  static inline bool any_elements(const E&) { return false; }
+
+  template<class E>
+  static inline XprNull trace(const E&) { return XprNull(); }
+};
+
+
+} // namespace meta
+
+} // namespace tvmet
+
+#endif /* TVMET_META_MATRIX_H */
+
+// Local Variables:
+// mode:C++
+// tab-width:8
+// End: