Please Develop Function for RMA (Running Moving Average) for ReactiveStateEngine

Hi, please develop a function for RMA (Running Moving Average) for reactive state engine.

It is defined as follows:

1) from wikipedia https://en.wikipedia.org/wiki/Moving_average

Modified moving average

A modified moving average (MMA), running moving average (RMA), or smoothed moving average (SMMA) is defined as:

{\displaystyle {\overline {p}}_{MM,{\text{today}}}={\frac {(N-1){\overline {p}}_{MM,{\text{yesterday}} }+p_{\text{today}}}{N}}} ${\overline {p}}_{MM,{\text{today}}}={\frac {(N-1){\overline {p}}_{MM,{\text{yesterday}} }+p_{\text{today}}}{N}}$

In short, this is an exponential moving average, with . The only difference between EMA and SMMA/RMA/MMA is how is computed from . For EMA the customary choice is {\displaystyle \alpha =1/N} $\alpha =1/N$ {\displaystyle \alpha } $\alpha$ {\displaystyle N} $N$ {\displaystyle \alpha =2/(N+1)} $\alpha =2/(N+1)$