int PMPI_Type_create_struct(int count, const int* blocklens, const MPI_Aint* indices, const MPI_Datatype* old_types,
MPI_Datatype* new_type) {
int PMPI_Type_create_struct(int count, const int* blocklens, const MPI_Aint* indices, const MPI_Datatype* old_types,
MPI_Datatype* new_type) {