Minor refactor of r_pos_x

Avoiding redundant declarations and division by zero.

diff --git a/rset/rsmultiandor.c b/rset/rsmultiandor.c
index f65039a..be47e2b 100644 (file)
--- a/rset/rsmultiandor.c
+++ b/rset/rsmultiandor.c
@@ -619,14 +619,17 @@ static void r_pos_x(RSFD rfd, double *current, double *total, int and_op)
     double sum_cur = 0.0;
     double sum_tot = 0.0;
     for (i = 0; i<ct->no_children; i++){
-        double nratio, cur, tot;
+        double cur, tot;
         rset_pos(mrfd->items[i].fd, &cur, &tot);
         yaz_log(log_level, "r_pos: %d %0.1f %0.1f", i, cur,tot);
-        nratio = cur / tot;
         if (and_op)
         {
-            if (nratio > ratio)
-                ratio = nratio;
+            if (tot > 0.0)
+            {
+                double nratio = cur / tot;
+                if (nratio > ratio)
+                    ratio = nratio;
+            }
         }
         else
         {
@@ -635,7 +638,7 @@ static void r_pos_x(RSFD rfd, double *current, double *total, int and_op)
             sum_tot += tot;
         }
     }
-    if (!and_op)
+    if (!and_op && sum_tot > 0.0)
         ratio = sum_cur / sum_tot;
     if (ratio == 0.0 || ratio == 1.0) { /* nothing there */
         *current = 0;