MACDH(len1, len2, len3)
len1 - faster moving average period (typically 13)
len2 - slower moving average period (typically 26)
len3 - signal smoothing period (typically 9)
MACDH is the difference between MACD and its signal line.
It is calculated as MACD(len1,len2) - MACDS(len1, len2, len3).
This indicator supports ultra-fast one-pass calculation when used in the Data Section with non-variable lengths.