diff armadillo-2.4.4/include/armadillo_bits/span.hpp @ 0:8b6102e2a9b0

Armadillo Library

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/armadillo-2.4.4/include/armadillo_bits/span.hpp	Wed Apr 11 09:27:06 2012 +0100
@@ -0,0 +1,83 @@
+// Copyright (C) 2010-2011 NICTA (www.nicta.com.au)
+// Copyright (C) 2010-2011 Conrad Sanderson
+// Copyright (C) 2011 Stanislav Funiak
+// 
+// This file is part of the Armadillo C++ library.
+// It is provided without any warranty of fitness
+// for any purpose. You can redistribute this file
+// and/or modify it under the terms of the GNU
+// Lesser General Public License (LGPL) as published
+// by the Free Software Foundation, either version 3
+// of the License or (at your option) any later version.
+// (see http://www.opensource.org/licenses for more info)
+
+
+
+//! \addtogroup span
+//! @{
+
+
+struct span_alt {};
+
+
+template<typename Dummy = int>
+class span_base
+  {
+  public:
+  static const span_alt all;
+  };
+
+
+template<typename Dummy>
+const span_alt span_base<Dummy>::all = span_alt();
+
+
+class span : public span_base<>
+  {
+  public:
+
+  uword a;
+  uword b;
+  bool  whole;
+  
+  inline
+  span()
+    : whole(true)
+    {
+    }
+  
+  
+  inline
+  span(const span_alt&)
+    : whole(true)
+    {
+    }
+  
+  // TODO:
+  // if the "explicit" keyword is removed or commented out,
+  // the compiler will be able to automatically convert integers to an instance of the span class.
+  // this is useful for Cube::operator()(span&, span&, span&),
+  // but it might have unintended consequences or interactions elsewhere.
+  // as such, removal of "explicit" needs thorough testing.
+  inline
+  explicit
+  span(const uword in_a)
+    : a(in_a)
+    , b(in_a)
+    , whole(false)
+    {
+    }
+  
+  inline
+  span(const uword in_a, const uword in_b)
+    : a(in_a)
+    , b(in_b)
+    , whole(false)
+    {
+    }
+
+  };
+
+
+
+//! @}