blitz Version 0.10
blitz/tinyveciter.h
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00001 // -*- C++ -*-
00002 /***************************************************************************
00003  * blitz/tinyveciter.h   Declaration of TinyVectorIter<T,N,stride>
00004  *
00005  * $Id: tinyveciter.h,v 1.7 2011/03/25 22:41:16 julianc Exp $
00006  *
00007  * Copyright (C) 1997-2011 Todd Veldhuizen <tveldhui@acm.org>
00008  *
00009  * This file is a part of Blitz.
00010  *
00011  * Blitz is free software: you can redistribute it and/or modify 
00012  * it under the terms of the GNU Lesser General Public License
00013  * as published by the Free Software Foundation, either version 3
00014  * of the License, or (at your option) any later version.
00015  *
00016  * Blitz is distributed in the hope that it will be useful,
00017  * but WITHOUT ANY WARRANTY; without even the implied warranty of
00018  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
00019  * GNU Lesser General Public License for more details.
00020  *
00021  * You should have received a copy of the GNU Lesser General Public 
00022  * License along with Blitz.  If not, see <http://www.gnu.org/licenses/>.
00023  * 
00024  * Suggestions:          blitz-devel@lists.sourceforge.net
00025  * Bugs:                 blitz-support@lists.sourceforge.net    
00026  *
00027  * For more information, please see the Blitz++ Home Page:
00028  *    https://sourceforge.net/projects/blitz/
00029  *
00030  ***************************************************************************/
00031 
00032 
00033 #ifndef BZ_TINYVECITER_H
00034 #define BZ_TINYVECITER_H
00035 
00036 #ifndef BZ_TINYVEC_H
00037  #include <blitz/tinyvec.h>
00038 #endif
00039 
00040 #ifndef BZ_MANUAL_VECEXPR_COPY_CONSTRUCTOR
00041  #error "Debug in tinyveciter.h (this line shouldn't be here)"
00042 #endif
00043 
00044 BZ_NAMESPACE(blitz)
00045 
00046 // N_stride has default 1, in forward declaration in <blitz/tinyvec.h>
00047 template<typename P_numtype, int N_length, int N_stride>
00048 class TinyVectorIter {
00049 public:
00050     typedef P_numtype T_numtype;
00051 
00052     explicit TinyVectorIter(TinyVector<T_numtype, N_length>& x)
00053         : data_(x.data())
00054     { }
00055 
00056 #ifdef BZ_MANUAL_VECEXPR_COPY_CONSTRUCTOR
00057     TinyVectorIter(const TinyVectorIter<T_numtype, N_length, N_stride>& iter)
00058         : data_(iter.data_)
00059     {
00060     }
00061 #endif
00062 
00063     T_numtype operator[](int i) const
00064     {
00065         BZPRECONDITION(i >= 0 && i < N_length);
00066         return data_[i * N_stride];
00067     }
00068 
00069     T_numtype& restrict operator[](int i)
00070     {
00071         BZPRECONDITION(i >= 0 && i < N_length);
00072         return data_[i * N_stride];
00073     }
00074 
00075     T_numtype operator()(int i) const
00076     {
00077         BZPRECONDITION(i >= 0 && i < N_length);
00078         return data_[i * N_stride];
00079     }
00080 
00081     T_numtype& restrict operator()(int i)
00082     {
00083         BZPRECONDITION(i >= 0 && i < N_length);
00084         return data_[i * N_stride];
00085     }
00086 
00087     int length(int) const
00088     { return N_length; }
00089 
00090     static const int _bz_staticLengthCount = 1,
00091                      _bz_dynamicLengthCount = 0,
00092                      _bz_staticLength = 0;
00093 
00094     bool _bz_hasFastAccess() const
00095     { return true; }
00096 
00097     T_numtype _bz_fastAccess(int i) const
00098     { return data_[i * N_stride]; }
00099 
00100     T_numtype& _bz_fastAccess(int i)
00101     { return data_[i * N_stride]; }
00102 
00103     int _bz_suggestLength() const
00104     { return N_length; }
00105 
00106 private:
00107     T_numtype * restrict data_;
00108 };
00109 
00110 // N_stride has default 1, in forward declaration in <blitz/tinyvec.h>
00111 template<typename P_numtype, int N_length, int N_stride>
00112 class TinyVectorIterConst {
00113 public:
00114     typedef P_numtype T_numtype;
00115 
00116     explicit TinyVectorIterConst(const TinyVector<T_numtype, N_length>& x)
00117         : data_(x.data())
00118     { }
00119 
00120 #ifdef BZ_MANUAL_VECEXPR_COPY_CONSTRUCTOR
00121     TinyVectorIterConst(const TinyVectorIterConst<T_numtype, N_length, 
00122         N_stride>& iter)
00123         : data_(iter.data_)
00124     {
00125     }
00126 
00127     void operator=(const TinyVectorIterConst<T_numtype, N_length, N_stride>& 
00128         iter)
00129     {
00130         data_ = iter.data_;
00131     }
00132 #endif
00133 
00134     T_numtype operator[](int i) const
00135     {
00136         BZPRECONDITION(i >= 0 && i < N_length);
00137         return data_[i * N_stride];
00138     }
00139 
00140     T_numtype operator()(int i) const
00141     {
00142         BZPRECONDITION(i >= 0 && i < N_length);
00143         return data_[i * N_stride];
00144     }
00145 
00146     int length(int) const
00147     { return N_length; }
00148 
00149     static const int _bz_staticLengthCount = 1,
00150                      _bz_dynamicLengthCount = 0,
00151                      _bz_staticLength = 0;
00152 
00153     bool _bz_hasFastAccess() const
00154     { return true; }
00155 
00156     T_numtype _bz_fastAccess(int i) const
00157     { return data_[i * N_stride]; }
00158 
00159     int _bz_suggestLength() const
00160     { return N_length; }
00161 
00162 private:
00163     const T_numtype * restrict data_;
00164 };
00165 
00166 BZ_NAMESPACE_END
00167 
00168 #endif // BZ_TINYVECITER_H
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