added differentiation rule for built-in sum call

OpenModelica · Feb 18, 2016 · 01caff9 · 01caff9
1 parent 5a950a9
commit 01caff9
Showing 1 changed file with 8 additions and 0 deletions.
diff --git a/Compiler/BackEnd/Differentiate.mo b/Compiler/BackEnd/Differentiate.mo
@@ -1590,6 +1590,14 @@ algorithm
         (exp_1, _) = Expression.makeZeroExpression(Expression.arrayDimension(tp));
       then (exp_1, inFuncs);
 
+    case ("sum",_)
+      equation
+        tp = Expression.typeof(exp);
+        (exp_1, funcs) = differentiateExp(exp, inDiffwrtCref, inInputData,inDiffType,inFuncs, maxIter, expStack);
+        exp_2 = Expression.makePureBuiltinCall("sum",{exp_1},tp);
+      then
+       (exp_2, funcs);
+
     case ("max",DAE.ARRAY(array=expl,ty=tp))
       equation
         tp = Types.arrayElementType(tp);