normalization of methods

lib/volatility/rvi/Rvi.Tests.cs

@@ -423,7 +423,7 @@ public class RviTests
 
         // Mode 2: Batch via TSeries
         var tSeries = new TSeries(new List<long>(times), new List<double>(prices));
-        var batchResult = Rvi.Calculate(tSeries, stdevLength: 10, rmaLength: 14);
+        var batchResult = Rvi.Batch(tSeries, stdevLength: 10, rmaLength: 14);
 
         // Mode 3: Span-based
         double[] spanOutput = new double[dataLen];
@@ -636,7 +636,7 @@ public class RviTests
             source.Add(new TValue(DateTime.UtcNow.AddSeconds(i), 100.0 + i * 0.5));
         }
 
-        var result = Rvi.Calculate(source, stdevLength: 10, rmaLength: 14);
+        var result = Rvi.Batch(source, stdevLength: 10, rmaLength: 14);
 
         Assert.Equal(50, result.Count);
         // Allow small floating-point tolerance beyond [0,100]
@@ -654,7 +654,7 @@ public class RviTests
             source.Add(new TBar(time, price - 1, price + 1, price - 2, price, 1000));
         }
 
-        var result = Rvi.Calculate(source, stdevLength: 10, rmaLength: 14);
+        var result = Rvi.Batch(source, stdevLength: 10, rmaLength: 14);
 
         Assert.Equal(50, result.Count);
     }

lib/volatility/rvi/Rvi.Validation.Tests.cs

@@ -204,7 +204,7 @@ public class RviValidationTests
         }
 
         // Batch calculation
-        var batchResult = Rvi.Calculate(prices, 10, 14);
+        var batchResult = Rvi.Batch(prices, 10, 14);
 
         // Compare last values
         Assert.Equal(batchResult.Last.Value, streamingRvi.Last.Value, 8);

lib/volatility/rvi/Rvi.cs

@@ -370,7 +370,7 @@ public sealed class Rvi : AbstractBase
     /// <param name="stdevLength">The lookback period for standard deviation.</param>
     /// <param name="rmaLength">The lookback period for RMA smoothing.</param>
     /// <returns>A TSeries containing the RVI values.</returns>
-    public static TSeries Calculate(TSeries source, int stdevLength = 10, int rmaLength = 14)
+    public static TSeries Batch(TSeries source, int stdevLength = 10, int rmaLength = 14)
     {
         if (stdevLength < 2)
         {
@@ -399,7 +399,7 @@ public sealed class Rvi : AbstractBase
     /// <summary>
     /// Calculates RVI for a bar series (static).
     /// </summary>
-    public static TSeries Calculate(TBarSeries source, int stdevLength = 10, int rmaLength = 14)
+    public static TSeries Batch(TBarSeries source, int stdevLength = 10, int rmaLength = 14)
     {
         var rvi = new Rvi(stdevLength, rmaLength);
         return rvi.Update(source);
@@ -563,4 +563,12 @@ public sealed class Rvi : AbstractBase
             output[i] = rviValue;
         }
     }
-}
+
+    public static (TSeries Results, Rvi Indicator) Calculate(TSeries source, int stdevLength = 10, int rmaLength = 14)
+    {
+        var indicator = new Rvi(stdevLength, rmaLength);
+        TSeries results = indicator.Update(source);
+        return (results, indicator);
+    }
+
+}