Implement starpu_get_vector_elemsize that was somehow missing.

include/starpu-data-interfaces.h

@@ -74,6 +74,7 @@ typedef struct starpu_vector_interface_s {
 void starpu_register_vector_data(starpu_data_handle *handle, uint32_t home_node,
                         uintptr_t ptr, uint32_t nx, size_t elemsize);
 uint32_t starpu_get_vector_nx(starpu_data_handle handle);
+size_t starpu_get_vector_elemsize(starpu_data_handle handle);
 uintptr_t starpu_get_vector_local_ptr(starpu_data_handle handle);
 
 /* CSR interface for sparse matrices (compressed sparse row representation) */

src/datawizard/interfaces/vector_interface.c

@@ -188,6 +188,11 @@ uintptr_t starpu_get_vector_local_ptr(data_state *state)
 	return (state->interface[node].vector.ptr);
 }
 
+size_t starpu_get_vector_elemsize(data_state *state)
+{
+	return (state->interface[0].vector.elemsize);
+}
+
 /* memory allocation/deallocation primitives for the vector interface */
 
 /* returns the size of the allocated area */