Simplify Product.Simplify. Add test.

dharmatech · Jan 1, 2013 · 9b7de06 · 9b7de06
1 parent 8025aed
commit 9b7de06
Showing 1 changed file with 5 additions and 7 deletions.
diff --git a/Symbolism/Program.cs b/Symbolism/Program.cs
@@ -1048,13 +1048,7 @@ public MathObject Simplify()
         {
             if (elts.Count == 1) return elts[0];
 
-            Func<MathObject, bool> IsZero = obj =>
-            {
-                if (obj is Integer) return ((Integer)obj).val == 0;
-                return false;
-            };
-
-            if (elts.Any(IsZero)) return new Integer(0);
+            if (elts.Any(elt => elt == new Integer(0))) return new Integer(0);
 
             var res = RecursiveSimplify(elts);
 
@@ -1375,6 +1369,10 @@ static void Main(string[] args)
 
                 AssertIsTrue(3.4 * x * 1.2 * y == 4.08 * x * y);
 
+                // Product.Simplify
+
+                AssertIsTrue(x * 0 == new Integer(0));
+
                 // Difference
 
                 AssertIsTrue(-x == -1 * x);