fix typo in notes

fix RTD crash for ice

Approved-by: Jake Norbut <jake.norbut@bluetradesys.com>

doc/user/content/release_notes/_index.md

@@ -4,6 +4,15 @@ weight = 3
 sort_by = "weight"
 insert_anchor_links = "right"
 +++
+## 2.15.3
+### Bug Fixes
+  - Fixed a bug where some CME currency spreads exhibited incorrect tick values
+## 2.15.2
+### User Visible Changes  
+  - Excel RTD plugin can now receive ICE market data
+## 2.15.1
+### Bug Fixes
+  - Fixed a FIX log parsing issue that resulted in exchange gateway logon problems
 ## 2.15.0
 ### User Visible Changes  
   - Added ability to hide Ladder status messages via Ladder Settings -> Left Panel tab -> Show/Hide groupbox -> Status Message

src/client/spark/view/Spark/Core/TickUtils.cs

@@ -292,7 +292,9 @@ namespace mbts.spark {
             int count = 0;
             double factored_base = log10_diff > 0 ? reduced_target_base * Math.Pow(10, Math.Ceiling(log10_diff)) : reduced_target_base;
             do {
-               if (factored_base % raw_base == 0)
+               // Note that the modulus operator is not used here due to rounding errors.
+               // Such a rounding errror was the cause of the bug https://bluetradesys.atlassian.net/browse/SP-283.
+               if (MathUtils.is_int(factored_base / raw_base))
                   return new TickFactors(factored_base, factored_base / raw_base);
                factored_base *= 10;
             } while (++count < 10);

src/client/spark_excel/rtd/subscriptions/MDSubscribe.cs

@@ -66,9 +66,23 @@ namespace bts.excel.rtd
          if (string.IsNullOrEmpty(contract))
             return Observable.Return(new []{"Can't Parse Contract: " + contract ?? string.Empty});
 
-         Func<SecurityImmutable, bool> where = (x => x.Exchange == ven && x.Symbol == symbol && x.security_type() == sectype &&
-                                                x.Glbx.SecurityDesc == contract);
+         Func<SecurityImmutable, bool> desc = null;
+         switch(ven)
+         {
+            case Venue.Sim:
+            case Venue.Glbx:
+               desc = (x=> x.Glbx.SecurityDesc == contract);
+            break;
+            case Venue.Ice:
+               desc = (x=> x.Ice.SecurityDesc == contract);
+               break;
+            default:
+               desc = (x => true);
+            break;
+         }
 
+         Func<SecurityImmutable, bool> where = (x => x.Exchange == ven && x.Symbol == symbol && x.security_type() == sectype && desc(x) );
+                                                
          var stream = market_data(ven).subscribe_combined(where);
          return stream;
       }