#include <sys/time.h>
#include <stdio.h>
#include <string.h>

#ifdef LowerUnderscore
#define mpi_wtime       mpi_wtime_
#define mpi_send        mpi_send_
#define mpi_irecv       mpi_irecv_
#define mpi_wait        mpi_wait_
#define mpi_alltoall    mpi_alltoall_
#define mpi_alltoallv   mpi_alltoallv_
#define mpi_allgather   mpi_allgather_
#define mpi_allgatherv  mpi_allgatherv_
#endif
#ifdef LowerDoubleUnderscore
#define mpi_wtime       mpi_wtime__
#define mpi_send        mpi_send__
#define mpi_irecv       mpi_irecv__
#define mpi_wait        mpi_wait__
#define mpi_alltoall    mpi_alltoall__
#define mpi_alltoallv   mpi_alltoallv__
#define mpi_allgather   mpi_allgather__
#define mpi_allgatherv  mpi_allgatherv__
#endif
#ifdef LowerCase
#define mpi_wtime       mpi_wtime
#define mpi_send        mpi_send
#define mpi_irecv       mpi_irecv
#define mpi_wait        mpi_wait
#define mpi_alltoall    mpi_alltoall
#define mpi_alltoallv   mpi_alltoallv
#define mpi_allgather   mpi_allgather
#define mpi_allgatherv  mpi_allgatherv
#endif
#ifdef UpperUnderscore
#define mpi_wtime       MPI_WTIME_
#define mpi_send        MPI_SEND_
#define mpi_irecv       MPI_IRECV_
#define mpi_wait        MPI_WAIT_
#define mpi_alltoall    MPI_ALLTOALL_
#define mpi_alltoallv   MPI_ALLTOALLV_
#define mpi_allgather   MPI_ALLGATHER_
#define mpi_allgatherv  MPI_ALLGATHERV_
#endif
#ifdef UpperDoubleUnderscore 
#define mpi_wtime       MPI_WTIME__
#define mpi_send        MPI_SEND__
#define mpi_irecv       MPI_IRECV__
#define mpi_wait        MPI_WAIT__
#define mpi_alltoall    MPI_ALLTOALL__
#define mpi_alltoallv   MPI_ALLTOALLV__
#define mpi_allgather   MPI_ALLGATHER__
#define mpi_allgatherv  MPI_ALLGATHERV__
#endif
#ifdef UpperCase
#define mpi_wtime       MPI_WTIME
#define mpi_send        MPI_SEND
#define mpi_irecv       MPI_IRECV
#define mpi_wait        MPI_WAIT
#define mpi_alltoall    MPI_ALLTOALL
#define mpi_alltoallv   MPI_ALLTOALLV
#define mpi_allgather   MPI_ALLGATHER
#define mpi_allgatherv  MPI_ALLGATHERV
#endif

#define mpi_integer        1
#define mpi_double         3
#define mpi_double_complex 5

double mpi_wtime() 
{
  struct timeval tt;
  struct timezone tz;
  double temp;
  if (gettimeofday(&tt,&tz) != 0) {
    fprintf(stderr,"Fatal error for gettimeofday ??? \n");
    temp=0.0;
  } else {
    temp = ((double)tt.tv_sec) + ((double)tt.tv_usec)*1.0e-6;
  }
  return(temp);
}


void mpi_wait()
{
  return;
}
void mpi_send()
{
  return;
}
void mpi_irecv()
{
  return;
}


void mpi_alltoall(void* sdb, int* sdc, int* sdt,
		  void* rvb, int* rvc, int* rvt, int* comm, int* ierr)
{
  int i,j,k; 
  
  if (*sdt == mpi_integer) {
    memcpy(rvb,sdb, (*sdc)*sizeof(int));
  }
  if (*sdt == mpi_double) {
    memcpy(rvb,sdb, (*sdc)*sizeof(double));
  } 
  if (*sdt == mpi_double_complex) {
    memcpy(rvb,sdb, (*sdc)*2*sizeof(double));
  }
  *ierr = 0;
}

void mpi_alltoallv(void* sdb, int* sdc, int* sdspl, int* sdt,
		   void* rvb, int* rvc, int* rdspl, int* rvt, int* comm, int* ierr)
{
  int i,j,k; 

  
  if (*sdt == mpi_integer) {
    memcpy((rvb+rdspl[0]*sizeof(int)),
	   (sdb+sdspl[0]*sizeof(int)),(*sdc)*sizeof(int));
  }
  if (*sdt == mpi_double) {
    memcpy((rvb+rdspl[0]*sizeof(double)),
	   (sdb+sdspl[0]*sizeof(double)),(*sdc)*sizeof(double));
  } 
  if (*sdt == mpi_double_complex) {
    memcpy((rvb+rdspl[0]*2*sizeof(double)),
	   (sdb+sdspl[0]*2*sizeof(double)),(*sdc)*2*sizeof(double));
  }
  *ierr = 0;
}


void mpi_allgather(void* sdb, int* sdc, int* sdt,
		   void* rvb, int* rvc, int* rvt, int* comm, int* ierr)
{
  int i,j,k; 
  
  if (*sdt == mpi_integer) {
    memcpy(rvb,sdb, (*sdc)*sizeof(int));
  }
  if (*sdt == mpi_double) {
    memcpy(rvb,sdb, (*sdc)*sizeof(double));
  } 
  if (*sdt == mpi_double_complex) {
    memcpy(rvb,sdb, (*sdc)*2*sizeof(double));
  }
  *ierr = 0;
}

void mpi_allgatherv(void* sdb, int* sdc, int* sdt,
		    void* rvb, int* rvc, int* rdspl,
		    int* rvt, int* comm, int* ierr)
{
  int i,j,k; 
  
  if (*sdt == mpi_integer) {
    memcpy(rvb,sdb, (*sdc)*sizeof(int));
  }
  if (*sdt == mpi_double) {
    memcpy(rvb,sdb, (*sdc)*sizeof(double));
  } 
  if (*sdt == mpi_double_complex) {
    memcpy(rvb,sdb, (*sdc)*2*sizeof(double));
  }
  if (*sdt == mpi_integer) {
    memcpy((rvb+rdspl[0]*sizeof(int)),
	   (sdb),(*sdc)*sizeof(int));
  }
  if (*sdt == mpi_double) {
    memcpy((rvb+rdspl[0]*sizeof(double)),
	   (sdb),(*sdc)*sizeof(double));
  } 
  if (*sdt == mpi_double_complex) {
    memcpy((rvb+rdspl[0]*2*sizeof(double)),
	   (sdb),(*sdc)*2*sizeof(double));
  }


  *ierr = 0;
}