[TMath] Add descriptions for MovMedian, MovMean and Mode

Author: pitkajuh

math/mathcore/inc/TMath.h

@@ -1100,7 +1100,16 @@ Double_t TMath::Mean(Long64_t n, const T *a, const Double_t *w)
 }
 
 ////////////////////////////////////////////////////////////////////////////////
-/// Returns the moving mean of an array with a length n.
+/// Returns the moving mean of an array.
+///
+/// \param[in] n     number of array elements
+/// \param[in] *a     array
+/// \param[in]  k     window size
+/// \param[in] *w     weight of the array values
+///
+/// The mean values will be calculated over the window value
+/// for each entry a[i] of the array. The function will return
+/// weighted moving mean if the weight argument is provided.
 
 template <typename T>
 class Moving {
@@ -1222,7 +1231,18 @@ T *TMath::MovMean(Long64_t n, T *a, Long64_t k, Double_t *w)
 }
 
 ////////////////////////////////////////////////////////////////////////////////
-/// Returns the moving median of an array with a length n.
+/// Returns the moving median of an array.
+///
+/// \param[in] n     number of array elements
+/// \param[in] *a     array
+/// \param[in]  k     window size
+/// \param[in] *w     weight of the array values
+/// \param[in] *work     work
+///
+/// The median values will be calculated over the window
+/// value for each entry a[i] of the array. The function will
+/// return weighted moving median if the weight argument
+/// is provided.
 
 template <typename T>
 class MovingMedian : public Moving<T> {
@@ -1258,6 +1278,9 @@ T *TMath::MovMedian(Long64_t n, T *a, Long64_t k, Double_t *w, Long64_t *work)
 ////////////////////////////////////////////////////////////////////////////////
 /// Returns the mode of an array. If there are an equal amount of
 /// different values, the smallest value will be returned.
+///
+/// \param[in] n     number of array elements
+/// \param[in] *a     array
 
 template <typename T>
 Double_t TMath::Mode(const Long64_t n, T *a)