feat: add DMH (Ehlers Directional Movement with Hann) indicator

python/quantalib/_bridge.py

@@ -360,6 +360,7 @@ HAS_AMAT = _bind("qtl_amat", [_dp, _dp, _dp, _ci, _ci, _ci])
 HAS_AROON = _bind("qtl_aroon", [_dp, _dp, _ci, _ci, _dp])
 HAS_AROONOSC = _bind("qtl_aroonosc", [_dp, _dp, _ci, _ci, _dp])
 HAS_CHOP = _bind("qtl_chop", [_dp, _dp, _dp, _dp, _dp, _ci, _ci, _dp])
+HAS_DMH = _bind("qtl_dmh", [_dp, _dp, _ci, _ci, _dp])
 HAS_DMX = _bind("qtl_dmx", [_dp, _dp, _dp, _ci, _ci, _dp])
 HAS_DX = _bind("qtl_dx", [_dp, _dp, _dp, _ci, _ci, _dp])
 HAS_GHLA = _bind("qtl_ghla", [_dp, _dp, _dp, _dp, _ci, _ci])

python/quantalib/dynamics.py

@@ -15,6 +15,7 @@ __all__ = [
     "aroon",
     "aroonosc",
     "chop",
+    "dmh",
     "dmx",
     "dx",
     "minus_di",
@@ -122,6 +123,17 @@ def chop(open: object, high: object, low: object, close: object, volume: object,
     return _wrap(dst, idx, f"CHOP_{period}", "dynamics", offset)
 
 
+def dmh(high: object, low: object, period: int = 14, offset: int = 0, **kwargs) -> object:
+    """Ehlers Directional Movement with Hann Windowing."""
+    period = int(kwargs.get("length", period))
+    offset = int(offset)
+    h, idx = _arr(high); l, _ = _arr(low)
+    n = len(h)
+    dst = _out(n)
+    _check(_lib.qtl_dmh(_ptr(h), _ptr(l), period, n, _ptr(dst)))
+    return _wrap(dst, idx, f"DMH_{period}", "dynamics", offset)
+
+
 def dmx(high: object, low: object, close: object, period: int = 14, offset: int = 0, **kwargs) -> object:
     """Directional Movement Extended."""
     period = int(kwargs.get("length", period))

python/src/Exports.Generated.cs

@@ -527,6 +527,19 @@ public static unsafe partial class Exports
         catch { return StatusCodes.QTL_ERR_INTERNAL; }
     }
 
+    [UnmanagedCallersOnly(EntryPoint = "qtl_dmh")]
+    public static int QtlDmh(double* high, double* low, int period, int n, double* destination)
+    {
+        if (high == null || low == null || destination == null) return StatusCodes.QTL_ERR_NULL_PTR;
+        if (n <= 0) return StatusCodes.QTL_ERR_INVALID_LENGTH;
+        try
+        {
+            Dmh.Batch(Src(high, n), Src(low, n), period, Dst(destination, n));
+            return StatusCodes.QTL_OK;
+        }
+        catch { return StatusCodes.QTL_ERR_INTERNAL; }
+    }
+
     [UnmanagedCallersOnly(EntryPoint = "qtl_dmx")]
     public static int QtlDmx(double* high, double* low, double* close, int period, int n, double* destination)
     {