remote_1d: blitz::range for edge scalar indices 3

Author: pdziekan

libmpdata++/bcond/remote_1d.hpp

@@ -108,7 +108,8 @@ namespace libmpdataxx
 
         assert(halo>=1);
         const rng_t left_edge_sclr_rng(this->left_edge_sclr, this->left_edge_sclr);
-        this->xchng(a, idx_t(idx_ctor_arg_t(left_edge_sclr_rng)), idx_t(idx_ctor_arg_t(this->left_halo_sclr.last())));
+        const rng_t left_halo_sclr_last_rng(this->left_halo_sclr.last(), this->left_halo_sclr.last());
+        this->xchng(a, idx_t(idx_ctor_arg_t(left_edge_sclr_rng)), idx_t(idx_ctor_arg_t(left_halo_sclr_last_rng)));
       }
 
       void avg_edge_and_halo1_sclr_cyclic(arr_t &a, const rng_t &j)
@@ -218,7 +219,8 @@ namespace libmpdataxx
 
         assert(halo>=1);
         const rng_t rght_edge_sclr_rng(this->rght_edge_sclr, this->rght_edge_sclr);
-        this->xchng(a, idx_t(idx_ctor_arg_t(rght_edge_sclr_rng)), idx_t(idx_ctor_arg_t(this->rght_halo_sclr.first())));
+        const rng_t rght_halo_sclr_first_rng(this->rght_halo_sclr.first(), this->rght_halo_sclr.first());
+        this->xchng(a, idx_t(idx_ctor_arg_t(rght_edge_sclr_rng)), idx_t(idx_ctor_arg_t(rght_halo_sclr_first_rng)));
       }
 
       void avg_edge_and_halo1_sclr_cyclic(arr_t &a, const rng_t &j)