move distributed typedefs to a centralized place

include/ginkgo/core/base/types.hpp

@@ -630,6 +630,24 @@ GKO_ATTRIBUTES constexpr bool operator!=(precision_reduction x,
     template _macro(size_type)
 
 
+namespace distributed {
+
+
+/**
+ *  Index type for global indices in a distributed system
+ */
+using global_index_type = int64;
+
+
+/**
+ * Index type for enumerating processors
+ *
+ * Conforms to the MPI C interface of e.g. MPI rank or size
+ */
+using comm_index_type = int;
+
+
+}  // namespace distributed
 }  // namespace gko
 
 

include/ginkgo/core/distributed/partition.hpp

@@ -36,16 +36,13 @@ OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
 #include <ginkgo/core/base/array.hpp>
 #include <ginkgo/core/base/polymorphic_object.hpp>
+#include <ginkgo/core/base/types.hpp>
 
 
 namespace gko {
 namespace distributed {
 
 
-using global_index_type = int64;
-using comm_index_type = int;
-
-
 /**
  * Represents a partition of a range of indices [0, size) into a disjoint set of
  * parts. The partition is stored as a set of consecutive ranges [begin, end)