return MPI_SUCCESS;
}
+int Datatype::create_subarray(int ndims, int* array_of_sizes,
+ int* array_of_subsizes, int* array_of_starts,
+ int order, MPI_Datatype oldtype, MPI_Datatype *newtype){
+
+ int i, step, end;
+ MPI_Datatype tmp;
+
+ for (i=0; i < ndims; i++) {
+ if (array_of_subsizes[i] > array_of_sizes[i]){
+ XBT_WARN("subarray : array_of_subsizes > array_of_sizes for dim %d\n",i);
+ return MPI_ERR_ARG;
+ }
+ if (array_of_starts[i] + array_of_subsizes[i] > array_of_sizes[i]){
+ XBT_WARN("subarray : array_of_starts + array_of_subsizes > array_of_sizes for dim %d\n",i);
+ return MPI_ERR_ARG;
+ }
+ }
+
+ MPI_Aint extent = oldtype->get_extent();
+
+ if( order==MPI_ORDER_C ) {
+ i = ndims - 1;
+ step = -1;
+ end = -1;
+ } else {
+ i = 0;
+ step = 1;
+ end = ndims;
+ }
+
+ create_vector( array_of_subsizes[i+step], array_of_subsizes[i], array_of_sizes[i],
+ oldtype, newtype );
+
+ tmp = *newtype;
+ MPI_Aint size = (MPI_Aint)array_of_sizes[i] * (MPI_Aint)array_of_sizes[i+step];
+ MPI_Aint lb = (MPI_Aint)array_of_starts[i] + (MPI_Aint)array_of_starts[i+step] *(MPI_Aint)array_of_sizes[i];
+
+
+ for( i += 2 * step; i != end; i += step ) {
+ create_hvector( array_of_subsizes[i], 1, size * extent,
+ tmp, newtype );
+ unref(tmp);
+ lb += size * array_of_starts[i];
+ size *= array_of_sizes[i];
+ tmp = *newtype;
+ }
+
+ MPI_Aint lbs[1] = {lb * extent};
+ int sizes [1]={1};
+
+ create_hindexed( 1, sizes, lbs, tmp, newtype);
+ unref(tmp);
+
+ tmp = *newtype;
+ create_resized(tmp, 0, extent, newtype);
+
+ unref(tmp);
+ return MPI_SUCCESS;
+}
Datatype* Datatype::f2c(int id){
return static_cast<Datatype*>(F2C::f2c(id));
}
