NAME

       MPI_Sizeof - Returns the size, in bytes, of the given type

SYNTAX

Fortran Syntax

       USE MPI
       ! or the older form: INCLUDE 'mpif.h'
       MPI_SIZEOF(X, SIZE, IERROR)
       <type>    X
       INTEGER   SIZE, IERROR

Fortran 2008 Syntax

       USE mpi_f08
       MPI_Sizeof(x, size, ierror)
            TYPE(*), DIMENSION(..) :: x
            INTEGER, INTENT(OUT) :: size
            INTEGER, OPTIONAL, INTENT(OUT) :: ierror

INPUT PARAMETER

       X         A Fortran variable of numeric intrinsic type (choice).

OUTPUT PARAMETERS

       SIZE      Size of machine representation of that type (integer).

       IERROR    Error status (integer).

DESCRIPTION

       MPI_SIZEOF  returns  the  size  (in  bytes)  of the machine representation of the given variable. It is a
       generic Fortran type and has a Fortran binding only. This routine is similar to  the  sizeof  builtin  in
       C/C++.  However, if given an array argument, it returns the size of the base element, not the size of the
       whole array.

NOTES

       This function is not available in C/C++ because it is not necessary.

ERRORS

       Almost all MPI routines return an error value; C routines as  the  value  of  the  function  and  Fortran
       routines in the last argument. C++ functions do not return errors. If the default error handler is set to
       MPI::ERRORS_THROW_EXCEPTIONS,  then  on  error  the  C++  exception  mechanism  will  be used to throw an
       MPI::Exception object.

       Before the error value is returned, the current MPI error handler  is  called.  By  default,  this  error
       handler  aborts  the  MPI  job,  except  for  I/O  function errors. The error handler may be changed with
       MPI_Comm_set_errhandler; the predefined error handler MPI_ERRORS_RETURN may be used to cause error values
       to be returned. Note that MPI does not guarantee that an MPI program can continue past an error.

       See the MPI man page for a full list of MPI error codes.

4.1.6                                             Sep 30, 2023                                     MPI_Sizeof(3)