Teuchos_PromotionTraits.hpp

00001 // @HEADER
00002 // ***********************************************************************
00003 // 
00004 //                    Teuchos: Common Tools Package
00005 //                 Copyright (2004) Sandia Corporation
00006 // 
00007 // Under terms of Contract DE-AC04-94AL85000, there is a non-exclusive
00008 // license for use of this work by or on behalf of the U.S. Government.
00009 // 
00010 // This library is free software; you can redistribute it and/or modify
00011 // it under the terms of the GNU Lesser General Public License as
00012 // published by the Free Software Foundation; either version 2.1 of the
00013 // License, or (at your option) any later version.
00014 //  
00015 // This library is distributed in the hope that it will be useful, but
00016 // WITHOUT ANY WARRANTY; without even the implied warranty of
00017 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00018 // Lesser General Public License for more details.
00019 //  
00020 // You should have received a copy of the GNU Lesser General Public
00021 // License along with this library; if not, write to the Free Software
00022 // Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
00023 // USA
00024 // Questions? Contact Michael A. Heroux (maherou@sandia.gov) 
00025 // 
00026 // ***********************************************************************
00027 // @HEADER
00028 
00029 #ifndef _TEUCHOS_PROMOTION_TRAITS_HPP_
00030 #define _TEUCHOS_PROMOTION_TRAITS_HPP_
00031 
00032 #include "Teuchos_ConfigDefs.hpp"
00033 
00034 namespace Teuchos {
00035 
00036 template <class A, class B>
00037 class PromotionTraits
00038 {
00039 public:
00040 };
00041 
00042 //Specialization
00043 template <class T> class PromotionTraits<T,T> {
00044 public:
00045   typedef T promote;
00046 };
00047 
00048 #define PT_SPEC(type1,type2,type3) \
00049 template <> class PromotionTraits< type1 , type2 > { \
00050 public: \
00051     typedef type3 promote; \
00052 }; \
00053 template <> class PromotionTraits< type2 , type1 > { \
00054 public: \
00055     typedef type3 promote; \
00056 };                                               
00057 
00058 #ifdef HAVE_TEUCHOS_COMPLEX
00059 PT_SPEC(double,std::complex<float>,std::complex<double>)
00060 PT_SPEC(float,std::complex<double>,std::complex<double>)
00061 PT_SPEC(float,std::complex<float>,std::complex<float>)
00062 PT_SPEC(double,std::complex<double>,std::complex<double>)
00063 #endif // HAVE_TEUCHOS_COMPLEX
00064 PT_SPEC(double,float,double)
00065 PT_SPEC(double,long,double)
00066 PT_SPEC(double,int,double)
00067 PT_SPEC(float,long,float)
00068 PT_SPEC(float,int,float)
00069 
00070 // ToDo: Add specializations for extended precision types!
00071 
00072 #undef PT_SPEC
00073 
00074 } // Teuchos namespace
00075 
00076 #endif // _TEUCHOS_PROMOTION_TRAITS_HPP_

Generated on Wed May 12 21:24:41 2010 for Teuchos - Trilinos Tools Package by  doxygen 1.4.7