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Teuchos_RawMPITraits.hpp
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00041 
00042 // ////////////////////////////////////////////////////////////////////////
00043 // Teuchos_RawMPITraits.hpp
00044 
00045 #ifndef TEUCHOS_RAW_MPI_TRAITS_H
00046 #define TEUCHOS_RAW_MPI_TRAITS_H
00047 
00048 #include "Teuchos_ConfigDefs.hpp"
00049 
00054 namespace Teuchos {
00055 
00081 template <class T> class RawMPITraits {
00082 public:
00084   static int adjustCount(const int count) { bool *junk1; T *junk2 = &junk1; return 0; } // Should not compile!
00086   static MPI_Datatype type() { bool *junk1; T *junk2 = &junk1; return MPI_DATATYPE_NULL; } // Should not compile!
00088   static MPI_Op sumOp() { bool *junk1; T *junk2 = &junk1; return MPI_OP_NULL; } // Should not compile!
00090   static MPI_Op maxOp() { bool *junk1; T *junk2 = &junk1; return MPI_OP_NULL; } // Should not compile!
00092   static MPI_Op minOp() { bool *junk1; T *junk2 = &junk1; return MPI_OP_NULL; } // Should not compile!
00093 };
00094 
00095 #ifndef DOXYGEN_SHOULD_SKIP_THIS
00096 
00098 template <> class RawMPITraits<char> {
00099 public:
00101   static int adjustCount(const int count) { return count; }
00103   static MPI_Datatype type() { return MPI_CHAR; }
00105   static MPI_Op sumOp() { return MPI_SUM; }
00107   static MPI_Op maxOp() { return MPI_MAX; }
00109   static MPI_Op minOp() { return MPI_MIN; }
00110 };
00111 
00114 template <> class RawMPITraits<int> {
00115 public:
00117   static int adjustCount(const int count) { return count; }
00119   static MPI_Datatype type() { return MPI_INT; }
00121   static MPI_Op sumOp() { return MPI_SUM; }
00123   static MPI_Op maxOp() { return MPI_MAX; }
00125   static MPI_Op minOp() { return MPI_MIN; }
00126 };
00127 
00130 template <> class RawMPITraits<float> {
00131 public:
00133   static int adjustCount(const int count) { return count; }
00135   static MPI_Datatype type() { return MPI_FLOAT; }
00137   static MPI_Op sumOp() { return MPI_SUM; }
00139   static MPI_Op maxOp() { return MPI_MAX; }
00141   static MPI_Op minOp() { return MPI_MIN; }
00142 };
00143 
00146 template <> class RawMPITraits<double> {
00147 public:
00149   static int adjustCount(const int count) { return count; }
00151   static MPI_Datatype type() { return MPI_DOUBLE; }
00153   static MPI_Op sumOp() { return MPI_SUM; }
00155   static MPI_Op maxOp() { return MPI_MAX; }
00157   static MPI_Op minOp() { return MPI_MIN; }
00158 };
00159 
00168 template <class T> class RawMPITraits< std::complex<T> > {
00169 public:
00171   static int adjustCount(const int count) { return (2*count); }
00173   static MPI_Datatype type() { return RawMPITraits<T>::type(); }
00175   static MPI_Op sumOp() { return MPI_SUM; }
00176 };
00177 
00178 #endif // DOXYGEN_SHOULD_SKIP_THIS
00179 
00180 } // namespace Teuchos
00181 
00182 #endif // TEUCHOS_RAW_MPI_TRAITS_H
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