#include <mpi.h>
int MPI_Type_contiguous(int count, MPI_Datatype oldtype,
MPI_Datatype *newtype)
INCLUDE 'mpif.h'
MPI_TYPE_CONTIGUOUS(COUNT, OLDTYPE, NEWTYPE, IERROR)
INTEGER COUNT, OLDTYPE, NEWTYPE, IERROR
#include <mpi.h> Datatype Datatype::Create_contiguous(int count) const
newtype is the datatype obtained by concatenating count copies of oldtype. Concatenation is defined using the extent of oldtype as the size of the concatenated copies.
Example: Let oldtype have type map {(double, 0), (char, 8)}, with extent 16, and let count = 3. The type map of the datatype returned by newtype is
{(double, 0), (char, 8), (double, 16), (char, 24),
(double, 32), (char, 40)];
i.e., alternating double and char elements, with displacements 0, 8, 16, 24, 32, 40.
In general, assume that the type map of oldtype is
{(type(0), disp(0)),...,(type(n-1), disp(n-1))},
with extent ex. Then newtype has a type map with count times n entries defined by:
{(type(0), disp(0)), ...,(type(n-1), disp(n-1)),
(type(0), disp(0) + ex), ...,(type(n-1),
disp(n-1) + ex), ...,(type(0), disp(0) + ex * (count - 1)),
...,(type(n-1), disp(n-1) + ex * (count - 1))}.
For more information about derived datatypes, see Section 3.12 of the MPI-1 Standard.
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.