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NAME

       MPI_Testany -  Tests for completion of any previdously initiated  communication

SYNOPSIS

       #include "mpi.h"
       int MPI_Testany(
               int count,
               MPI_Request array_of_requests[],
               int *index, int *flag,
               MPI_Status *status )

INPUT PARAMETERS

       count  - list length (integer)
       array_of_requests
              - array of requests (array of handles)

OUTPUT PARAMETERS

       index  - index of operation that completed, or MPI_UNDEFINED if none completed (integer)
       flag   - true if one of the operations is complete (logical)
       status - status object (Status).  May be MPI_STATUS_IGNORE .

NOTE ON STATUS FOR SEND OPERATIONS

       For  send operations, the only use of status is for MPI_Test_cancelled or in the case that
       there is an error, in which case the MPI_ERROR field of status will be set.

NOTES FOR FORTRAN

       All MPI routines in Fortran (except for MPI_WTIME  and  MPI_WTICK  )  have  an  additional
       argument  ierr  at  the  end  of  the  argument list.  ierr is an integer and has the same
       meaning as the  return  value  of  the  routine  in  C.   In  Fortran,  MPI  routines  are
       subroutines, and are invoked with the call statement.

       All MPI objects (e.g., MPI_Datatype , MPI_Comm ) are of type INTEGER in Fortran.

ERRORS

       All  MPI  routines  (except MPI_Wtime and MPI_Wtick ) return an error value; C routines as
       the value of the function and Fortran routines in the last argument.  Before the value  is
       returned,  the current MPI error handler is called.  By default, this error handler aborts
       the MPI job.  The error handler may be changed with MPI_Errhandler_set  ;  the  predefined
       error  handler  MPI_ERRORS_RETURN  may be used to cause error values to be returned.  Note
       that MPI does not guarentee that an MPI program can continue past an error.

       MPI_SUCCESS
              - No error; MPI routine completed successfully.

LOCATION

       testany.c

                                             1/9/2003                              MPI_Testany(3)