Sacado_Fad_StaticStorage.hpp

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00001 // $Id$ 
00002 // $Source$ 
00003 // @HEADER
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00005 // 
00006 //                           Sacado Package
00007 //                 Copyright (2006) Sandia Corporation
00008 // 
00009 // Under the terms of Contract DE-AC04-94AL85000 with Sandia Corporation,
00010 // the U.S. Government retains certain rights in this software.
00011 // 
00012 // This library is free software; you can redistribute it and/or modify
00013 // it under the terms of the GNU Lesser General Public License as
00014 // published by the Free Software Foundation; either version 2.1 of the
00015 // License, or (at your option) any later version.
00016 //  
00017 // This library is distributed in the hope that it will be useful, but
00018 // WITHOUT ANY WARRANTY; without even the implied warranty of
00019 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00020 // Lesser General Public License for more details.
00021 //  
00022 // You should have received a copy of the GNU Lesser General Public
00023 // License along with this library; if not, write to the Free Software
00024 // Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
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00026 // Questions? Contact David M. Gay (dmgay@sandia.gov) or Eric T. Phipps
00027 // (etphipp@sandia.gov).
00028 // 
00029 // ***********************************************************************
00030 // @HEADER
00031 
00032 #ifndef SACADO_FAD_STATICSTORAGE_HPP
00033 #define SACADO_FAD_STATICSTORAGE_HPP
00034 
00035 #include "Sacado_ConfigDefs.h"
00036 #include "Sacado_StaticArrayTraits.hpp"
00037 
00038 namespace Sacado {
00039 
00040   namespace Fad {
00041 
00043 
00047     template <typename T, int Num> 
00048     class StaticStorage {
00049 
00050     public:
00051 
00053       StaticStorage(const T & x) : val_(x), sz_(0) {}
00054 
00056 
00059       StaticStorage(const int sz, const T & x) : val_(x), sz_(sz) { 
00060 #ifdef SACADO_DEBUG
00061   if (sz > Num)
00062     throw "StaticStorage::StaticStorage() Error:  Supplied derivative dimension exceeds maximum length.";
00063 #endif
00064   ss_array<T>::zero(dx_, sz_); 
00065       }
00066 
00068       StaticStorage(const StaticStorage& x) : 
00069   val_(x.val_), sz_(x.sz_) { 
00070   //ss_array<T>::copy(x.dx_, dx_, sz_); 
00071   for (int i=0; i<sz_; i++)
00072     dx_[i] = x.dx_[i];
00073       }
00074 
00076       ~StaticStorage() {}
00077 
00079       StaticStorage& operator=(const StaticStorage& x) {
00080   val_ = x.val_;
00081   sz_ = x.sz_;
00082   //ss_array<T>::copy(x.dx_, dx_, sz_);
00083   for (int i=0; i<sz_; i++)
00084     dx_[i] = x.dx_[i];
00085   return *this;
00086       }
00087 
00089       int size() const { return sz_;}
00090 
00092       int length() const { return Num; }
00093 
00095       void resize(int sz) { 
00096 #ifdef SACADO_DEBUG
00097   if (sz > Num)
00098     throw "StaticStorage::resize() Error:  Supplied derivative dimension exceeds maximum length.";
00099 #endif
00100   sz_ = sz; 
00101       }
00102 
00104       void zero() { ss_array<T>::zero(dx_, sz_); }
00105 
00107       const T& val() const { return val_; }
00108 
00110       T& val() { return val_; }
00111 
00113       const T* dx() const { return dx_;}
00114 
00116       T dx(int i) const { return sz_ ? dx_[i] : T(0.); }
00117     
00119       T& fastAccessDx(int i) { return dx_[i];}
00120 
00122       const T& fastAccessDx(int i) const { return dx_[i];}
00123 
00124     private:
00125 
00127       T val_;
00128 
00130       T dx_[Num];
00131 
00133       int sz_;
00134 
00135     }; // class StaticStorage
00136 
00137   } // namespace Fad
00138 
00139 } // namespace Sacado
00140 
00141 #endif // SACADO_FAD_STATICSTORAGE_HPP

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