Fix typo, and finish getElFast

1 files changed, 22 insertions, 3 deletions

diff --git a/src/lib/rrdMultiFile.js b/src/lib/rrdMultiFile.js
index 1ac4b16..82ea76e 100644
--- a/src/lib/rrdMultiFile.js
+++ b/src/lib/rrdMultiFile.js
@@ -62,6 +62,7 @@ RRDRRASum.prototype.getEl = function(row_idx,ds_idx) {
 	outSum=undefined;

 	break;

       }

+    }

     outSum+=val;

   }

   return outSum;

@@ -70,9 +71,27 @@ RRDRRASum.prototype.getEl = function(row_idx,ds_idx) {
 // Low precision version of getEl

 // Uses getFastDoubleAt

 RRDRRASum.prototype.getElFast = function(row_idx,ds_idx) {

-  outSum=0.0;

-  for (rra in this.rra_list) {

-    outSum+=rra.getElFast(row_idx,ds_idx);

+  var outSum=0.0;

+  for (var i in this.rra_list) {

+    var offset=this.offset_list[i];

+    if ((row_id+offset)<this.row_cnt) {

+      var rra=this.rra_list[i];

+      val=rra.getElFast(row_idx+offset,ds_idx);

+    } else {

+      /* out of row range -> undefined*/

+      val=undefined;

+    }

+    /* treat all undefines as 0 for now */

+    if (val==undefined) {

+      if (this.treat_undefined_as_zero) {

+	val=0;

+      } else {

+	/* if even one element is undefined, the whole sum is undefined */

+	outSum=undefined;

+	break;

+      }

+    }

+    outSum+=val;

   }

   return outSum;

 }