feat: add new indicators (Decay, Edecay, MinusDi, MinusDm, PlusDi, PlusDm, Maxindex, Minindex, Sarext) and update pine scripts, core libs, validation tests, and python bindings

lib/dynamics/dx/Dx.Validation.Tests.cs

@@ -102,6 +102,52 @@ public sealed class DxValidationTests : IDisposable
         ValidationHelper.VerifyData(diMinusResults, outReal, outRange, lookback);
     }
 
+    [Fact]
+    public void DmPlus_MatchesTalib()
+    {
+        var dx = new Dx(14);
+        var dmPlusResults = new List<double>();
+
+        for (int i = 0; i < _data.Bars.Count; i++)
+        {
+            dx.Update(_data.Bars[i]);
+            dmPlusResults.Add(dx.DmPlus.Value);
+        }
+
+        double[] hData = _data.Bars.High.Select(x => x.Value).ToArray();
+        double[] lData = _data.Bars.Low.Select(x => x.Value).ToArray();
+        double[] outReal = new double[_data.Bars.Count];
+
+        var retCode = Functions.PlusDM(hData, lData, 0..^0, outReal, out var outRange, 14);
+        Assert.Equal(TALib.Core.RetCode.Success, retCode);
+
+        int lookback = Functions.PlusDMLookback(14);
+        ValidationHelper.VerifyData(dmPlusResults, outReal, outRange, lookback);
+    }
+
+    [Fact]
+    public void DmMinus_MatchesTalib()
+    {
+        var dx = new Dx(14);
+        var dmMinusResults = new List<double>();
+
+        for (int i = 0; i < _data.Bars.Count; i++)
+        {
+            dx.Update(_data.Bars[i]);
+            dmMinusResults.Add(dx.DmMinus.Value);
+        }
+
+        double[] hData = _data.Bars.High.Select(x => x.Value).ToArray();
+        double[] lData = _data.Bars.Low.Select(x => x.Value).ToArray();
+        double[] outReal = new double[_data.Bars.Count];
+
+        var retCode = Functions.MinusDM(hData, lData, 0..^0, outReal, out var outRange, 14);
+        Assert.Equal(TALib.Core.RetCode.Success, retCode);
+
+        int lookback = Functions.MinusDMLookback(14);
+        ValidationHelper.VerifyData(dmMinusResults, outReal, outRange, lookback);
+    }
+
     [Fact]
     public void MatchesSkender_DiValues()
     {

lib/dynamics/dx/Dx.cs

@@ -53,6 +53,18 @@ public sealed class Dx : ITValuePublisher
     /// </summary>
     public TValue DiMinus { get; private set; }
 
+    /// <summary>
+    /// Current smoothed +DM value (Wilder-smoothed raw plus directional movement, before TR normalization).
+    /// Equivalent to TA-Lib PLUS_DM.
+    /// </summary>
+    public TValue DmPlus { get; private set; }
+
+    /// <summary>
+    /// Current smoothed -DM value (Wilder-smoothed raw minus directional movement, before TR normalization).
+    /// Equivalent to TA-Lib MINUS_DM.
+    /// </summary>
+    public TValue DmMinus { get; private set; }
+
     /// <summary>
     /// True if the DX has warmed up and is providing valid results.
     /// </summary>
@@ -106,6 +118,8 @@ public sealed class Dx : ITValuePublisher
         Last = default;
         DiPlus = default;
         DiMinus = default;
+        DmPlus = default;
+        DmMinus = default;
     }
 
     [MethodImpl(MethodImplOptions.AggressiveInlining)]
@@ -276,6 +290,8 @@ public sealed class Dx : ITValuePublisher
 
         DiPlus = new TValue(input.Time, diPlus);
         DiMinus = new TValue(input.Time, diMinus);
+        DmPlus = new TValue(input.Time, _samples >= _period ? _dmPlusSmooth : 0);
+        DmMinus = new TValue(input.Time, _samples >= _period ? _dmMinusSmooth : 0);
         Last = new TValue(input.Time, dx);
 
         Pub?.Invoke(this, new TValueEventArgs { Value = Last, IsNew = isNew });

lib/dynamics/dx/dx.pine

@@ -1,4 +1,4 @@
-// The MIT License (MIT)
+// Licensed under the Apache License, Version 2.0
 // © mihakralj
 //@version=6
 indicator("Directional Movement Index (DX)", "DX", overlay=false)