Shuto Naruse / Mbed 2 deprecated Eurobot2012_Secondary

Eurobot2012_Secondary

Fork of Eurobot_2012_Secondary by Shuto Naruse

tvmet/xpr/Identity.h@1:cc2a9eb0bd55, 2012-10-17 (annotated)

Committer:
narshu
Date:
Wed Oct 17 22:25:31 2012 +0000
Revision:
1:cc2a9eb0bd55
Commit before publishing

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narshu 1:cc2a9eb0bd55 1 /*
narshu 1:cc2a9eb0bd55 2 * $Id: Identity.h,v 1.4 2006-11-21 18:43:09 opetzold Exp $
narshu 1:cc2a9eb0bd55 3 */
narshu 1:cc2a9eb0bd55 4
narshu 1:cc2a9eb0bd55 5 #ifndef TVMET_XPR_IDENTITY_H
narshu 1:cc2a9eb0bd55 6 #define TVMET_XPR_IDENTITY_H
narshu 1:cc2a9eb0bd55 7
narshu 1:cc2a9eb0bd55 8
narshu 1:cc2a9eb0bd55 9 namespace tvmet {
narshu 1:cc2a9eb0bd55 10
narshu 1:cc2a9eb0bd55 11
narshu 1:cc2a9eb0bd55 12 /**
narshu 1:cc2a9eb0bd55 13 * \class XprIdentity Identity.h "tvmet/xpr/Identity.h"
narshu 1:cc2a9eb0bd55 14 * \brief Expression for the identity matrix.
narshu 1:cc2a9eb0bd55 15 *
narshu 1:cc2a9eb0bd55 16 * This expression doesn't hold any other expression, it
narshu 1:cc2a9eb0bd55 17 * simply returns 1 or 0 depends where the row and column
narshu 1:cc2a9eb0bd55 18 * element excess is done.
narshu 1:cc2a9eb0bd55 19 *
narshu 1:cc2a9eb0bd55 20 * \since release 1.6.0
narshu 1:cc2a9eb0bd55 21 * \sa identity
narshu 1:cc2a9eb0bd55 22 */
narshu 1:cc2a9eb0bd55 23 template<class T, std::size_t Rows, std::size_t Cols>
narshu 1:cc2a9eb0bd55 24 struct XprIdentity
narshu 1:cc2a9eb0bd55 25 : public TvmetBase< XprIdentity<T, Rows, Cols> >
narshu 1:cc2a9eb0bd55 26 {
narshu 1:cc2a9eb0bd55 27 XprIdentity& operator=(const XprIdentity&);
narshu 1:cc2a9eb0bd55 28
narshu 1:cc2a9eb0bd55 29 public:
narshu 1:cc2a9eb0bd55 30 typedef T value_type;
narshu 1:cc2a9eb0bd55 31
narshu 1:cc2a9eb0bd55 32 public:
narshu 1:cc2a9eb0bd55 33 /** Complexity counter. */
narshu 1:cc2a9eb0bd55 34 enum {
narshu 1:cc2a9eb0bd55 35 ops_assign = Rows * Cols,
narshu 1:cc2a9eb0bd55 36 ops = ops_assign
narshu 1:cc2a9eb0bd55 37 };
narshu 1:cc2a9eb0bd55 38
narshu 1:cc2a9eb0bd55 39 public:
narshu 1:cc2a9eb0bd55 40 /** access by index. */
narshu 1:cc2a9eb0bd55 41 value_type operator()(std::size_t i, std::size_t j) const {
narshu 1:cc2a9eb0bd55 42 return i==j ? 1 : 0;
narshu 1:cc2a9eb0bd55 43 }
narshu 1:cc2a9eb0bd55 44
narshu 1:cc2a9eb0bd55 45 public: // debugging Xpr parse tree
narshu 1:cc2a9eb0bd55 46 void print_xpr(std::ostream& os, std::size_t l=0) const {
narshu 1:cc2a9eb0bd55 47 os << IndentLevel(l++)
narshu 1:cc2a9eb0bd55 48 << "XprIdentity[O="<< ops << ")]<"
narshu 1:cc2a9eb0bd55 49 << std::endl;
narshu 1:cc2a9eb0bd55 50 os << IndentLevel(l)
narshu 1:cc2a9eb0bd55 51 << typeid(T).name() << ","
narshu 1:cc2a9eb0bd55 52 << "R=" << Rows << ", C=" << Cols << std::endl;
narshu 1:cc2a9eb0bd55 53 os << IndentLevel(--l) << ">"
narshu 1:cc2a9eb0bd55 54 << ((l != 0) ? "," : "") << std::endl;
narshu 1:cc2a9eb0bd55 55 }
narshu 1:cc2a9eb0bd55 56 };
narshu 1:cc2a9eb0bd55 57
narshu 1:cc2a9eb0bd55 58
narshu 1:cc2a9eb0bd55 59 } // namespace tvmet
narshu 1:cc2a9eb0bd55 60
narshu 1:cc2a9eb0bd55 61
narshu 1:cc2a9eb0bd55 62 #endif // TVMET_XPR_IDENTITY_H
narshu 1:cc2a9eb0bd55 63
narshu 1:cc2a9eb0bd55 64
narshu 1:cc2a9eb0bd55 65 // Local Variables:
narshu 1:cc2a9eb0bd55 66 // mode:C++
narshu 1:cc2a9eb0bd55 67 // tab-width:8
narshu 1:cc2a9eb0bd55 68 // End: