Fix exponentiation at NCalc.Async (ncalc#343)

tech-software · Oct 7, 2024 · 3465c99 · 3465c99
1 parent 3309993
commit 3465c99
Show file tree

Hide file tree

Showing 2 changed files with 9 additions and 1 deletion.
diff --git a/src/NCalc.Async/Visitors/AsyncEvaluationVisitor.cs b/src/NCalc.Async/Visitors/AsyncEvaluationVisitor.cs
@@ -110,7 +110,9 @@ public class AsyncEvaluationVisitor(AsyncExpressionContext context) : ILogicalEx
 
             case BinaryExpressionType.Exponentiation:
             {
-                return MathHelper.Pow(left.Value, right.Value, context);
+                var rightValue = await right.Value;
+                var leftValue = await left.Value;
+                return MathHelper.Pow(leftValue, rightValue, context);
             }
 
             case BinaryExpressionType.In:

diff --git a/test/NCalc.Tests/AsyncTests.cs b/test/NCalc.Tests/AsyncTests.cs
@@ -211,4 +211,10 @@ public async Task ShouldEvaluateTernaryAsync()
     {
         Assert.Equal(42, await new AsyncExpression("1 == 1 ? 42 : 3/0").EvaluateAsync());
     }
+
+    [Fact]
+    public async Task ShouldEvaluatePowAsync()
+    {
+        Assert.Equal(4d, await new AsyncExpression("2**2").EvaluateAsync());
+    }
 }