adds support for configurable yaxt exchanger to instance.c

src/mci/instance.c

@@ -149,6 +149,8 @@ struct field_config {
 
   double scale_factor, scale_summand;
 
+  char const * yaxt_exchanger_name;
+
   size_t collection_size;
 };
 
@@ -368,6 +370,11 @@ int compare_field_config(const void * a, const void * b) {
              (a_->scale_factor < b_->scale_factor))) return ret;
   if ((ret = (a_->scale_summand > b_->scale_summand) -
              (a_->scale_summand < b_->scale_summand))) return ret;
+  if ((ret = (a_->yaxt_exchanger_name == NULL) -
+             (b_->yaxt_exchanger_name == NULL))) return ret;
+  if (a_->yaxt_exchanger_name != NULL)
+    if ((ret = strcmp(a_->yaxt_exchanger_name, b_->yaxt_exchanger_name)))
+      return ret;
 
   // use memcmp to compare frac_mask_fallback_value, because they can be nan
   return
@@ -588,6 +595,10 @@ static void get_field_configuration(
       double scale_summand =
         yac_couple_config_get_scale_summand(
           couple_config, couple_idx, field_couple_idx);
+      char const * yaxt_exchanger_name =
+        // yac_couple_config_get_yaxt_exchanger_name(
+        //   couple_config, couple_idx, field_couple_idx);
+        NULL;
       size_t collection_size =
         yac_couple_config_get_field_collection_size(
           couple_config, src_config.comp_name, src_config.grid_name,
@@ -637,6 +648,7 @@ static void get_field_configuration(
         frac_mask_fallback_value;
       field_configs[field_config_idx].scale_factor = scale_factor;
       field_configs[field_config_idx].scale_summand = scale_summand;
+      field_configs[field_config_idx].yaxt_exchanger_name = yaxt_exchanger_name;
       field_configs[field_config_idx].collection_size = collection_size;
       field_configs[field_config_idx].src_interp_config.name = src_field_name;
       field_configs[field_config_idx].tgt_interp_config.name = tgt_field_name;
@@ -1174,6 +1186,11 @@ static void generate_interpolations(
           curr_field_config->scale_factor) ||
          (curr_field_config[-1].scale_summand !=
           curr_field_config->scale_summand) ||
+         ((curr_field_config[-1].yaxt_exchanger_name == NULL) !=
+          (curr_field_config->yaxt_exchanger_name == NULL)) ||
+         ((curr_field_config->yaxt_exchanger_name != NULL) &&
+          strcmp(curr_field_config[-1].yaxt_exchanger_name,
+                 curr_field_config->yaxt_exchanger_name)) ||
          memcmp(
            &(curr_field_config[-1].frac_mask_fallback_value),
            &(curr_field_config->frac_mask_fallback_value),
@@ -1188,7 +1205,8 @@ static void generate_interpolations(
           curr_field_config->collection_size,
           curr_field_config->frac_mask_fallback_value,
           curr_field_config->scale_factor,
-          curr_field_config->scale_summand, NULL);
+          curr_field_config->scale_summand,
+          curr_field_config->yaxt_exchanger_name);
     }
 
     if (is_active) {