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// $Header: /home/eschnett/C/carpet/Carpet/Carpet/CarpetLib/src/dist.hh,v 1.10 2004/03/01 19:43:39 schnetter Exp $
#ifndef DIST_HH
#define DIST_HH
#include <assert.h>
#include <stdio.h>
#include <stdlib.h>
#include <complex>
#include <mpi.h>
#include "cctk.h"
#include "defs.hh"
using namespace std;
namespace dist {
extern MPI_Comm comm;
#if 0
extern MPI_Datatype mpi_complex_float;
extern MPI_Datatype mpi_complex_double;
extern MPI_Datatype mpi_complex_long_double;
#else
extern MPI_Datatype mpi_complex8;
extern MPI_Datatype mpi_complex16;
extern MPI_Datatype mpi_complex32;
#endif
void init (int& argc, char**& argv);
void pseudoinit ();
void finalize ();
// Debugging output
#define CHECKPOINT dist::checkpoint(__FILE__, __LINE__)
void checkpoint (const char* file, int line);
// Datatype helpers
inline MPI_Datatype datatype (const char& dummy)
{ return MPI_CHAR; }
inline MPI_Datatype datatype (const signed char& dummy)
{ return MPI_UNSIGNED_CHAR; }
inline MPI_Datatype datatype (const unsigned char& dummy)
{ return MPI_BYTE; }
inline MPI_Datatype datatype (const short& dummy)
{ return MPI_SHORT; }
inline MPI_Datatype datatype (const unsigned short& dummy)
{ return MPI_UNSIGNED_SHORT; }
inline MPI_Datatype datatype (const int& dummy)
{ return MPI_INT; }
inline MPI_Datatype datatype (const unsigned int& dummy)
{ return MPI_UNSIGNED; }
inline MPI_Datatype datatype (const long& dummy)
{ return MPI_LONG; }
inline MPI_Datatype datatype (const unsigned long& dummy)
{ return MPI_UNSIGNED_LONG; }
inline MPI_Datatype datatype (const long long& dummy)
{ return MPI_LONG_LONG_INT; }
inline MPI_Datatype datatype (const float& dummy)
{ return MPI_FLOAT; }
inline MPI_Datatype datatype (const double& dummy)
{ return MPI_DOUBLE; }
inline MPI_Datatype datatype (const long double& dummy)
{ return MPI_LONG_DOUBLE; }
#if 0
inline MPI_Datatype datatype (const complex<float>& dummy)
{ return mpi_complex_float; }
inline MPI_Datatype datatype (const complex<double>& dummy)
{ return mpi_complex_double; }
inline MPI_Datatype datatype (const complex<long double>& dummy)
{ return mpi_complex_long_double; }
#else
# ifdef CCTK_REAL4
inline MPI_Datatype datatype (const CCTK_COMPLEX8& dummy)
{ return mpi_complex8; }
# endif
# ifdef CCTK_REAL8
inline MPI_Datatype datatype (const CCTK_COMPLEX16& dummy)
{ return mpi_complex16; }
# endif
# ifdef CCTK_REAL16
inline MPI_Datatype datatype (const CCTK_COMPLEX32& dummy)
{ return mpi_complex32; }
# endif
#endif
} // namespace dist
#endif // DIST_HH
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