Teuchos - Trilinos Tools Package Version of the Day
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 // Redistribution and use in source and binary forms, with or without
00011 // modification, are permitted provided that the following conditions are
00012 // met:
00013 //
00014 // 1. Redistributions of source code must retain the above copyright
00015 // notice, this list of conditions and the following disclaimer.
00016 //
00017 // 2. Redistributions in binary form must reproduce the above copyright
00018 // notice, this list of conditions and the following disclaimer in the
00019 // documentation and/or other materials provided with the distribution.
00020 //
00021 // 3. Neither the name of the Corporation nor the names of the
00022 // contributors may be used to endorse or promote products derived from
00023 // this software without specific prior written permission.
00024 //
00025 // THIS SOFTWARE IS PROVIDED BY SANDIA CORPORATION "AS IS" AND ANY
00026 // EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
00027 // IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
00028 // PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL SANDIA CORPORATION OR THE
00029 // CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
00030 // EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
00031 // PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
00032 // PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
00033 // LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
00034 // NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
00035 // SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
00036 //
00037 // Questions? Contact Michael A. Heroux (maherou@sandia.gov)
00038 //
00039 // ***********************************************************************
00040 // @HEADER
00041 
00042 #ifndef _TEUCHOS_PROMOTION_TRAITS_HPP_
00043 #define _TEUCHOS_PROMOTION_TRAITS_HPP_
00044 
00045 #include "Teuchos_ConfigDefs.hpp"
00046 
00047 namespace Teuchos {
00048 
00049 template <class A, class B>
00050 class PromotionTraits
00051 {
00052 public:
00053 };
00054 
00055 //Specialization
00056 template <class T> class PromotionTraits<T,T> {
00057 public:
00058   typedef T promote;
00059 };
00060 
00061 #define PT_SPEC(type1,type2,type3) \
00062 template <> class PromotionTraits< type1 , type2 > { \
00063 public: \
00064     typedef type3 promote; \
00065 }; \
00066 template <> class PromotionTraits< type2 , type1 > { \
00067 public: \
00068     typedef type3 promote; \
00069 };                                               
00070 
00071 #ifdef HAVE_TEUCHOS_COMPLEX
00072 PT_SPEC(double,std::complex<float>,std::complex<double>)
00073 PT_SPEC(float,std::complex<double>,std::complex<double>)
00074 PT_SPEC(float,std::complex<float>,std::complex<float>)
00075 PT_SPEC(double,std::complex<double>,std::complex<double>)
00076 #endif // HAVE_TEUCHOS_COMPLEX
00077 PT_SPEC(double,float,double)
00078 PT_SPEC(double,long,double)
00079 PT_SPEC(double,int,double)
00080 PT_SPEC(float,long,float)
00081 PT_SPEC(float,int,float)
00082 
00083 // ToDo: Add specializations for extended precision types!
00084 
00085 #undef PT_SPEC
00086 
00087 } // Teuchos namespace
00088 
00089 #endif // _TEUCHOS_PROMOTION_TRAITS_HPP_
 All Classes Namespaces Files Functions Variables Typedefs Enumerations Enumerator Friends Defines