NAME

       ddt - Compute the derivative of the input function

SYNOPSIS

       loadrt ddt [count=N|names=name1[,name2...]]

DESCRIPTION

       For  every  function  call from the real time thread, calculate the difference between the
       old and current input value divided by the timer elapsed since the last call.

FUNCTIONS

       ddt.N (requires a floating-point thread)

PINS

       ddt.N.in float in
       ddt.N.out float out

NOTES

       As this only work on two consecutive input values, it will only work  well  if  the  input
       change every function call, and not work so well if the rate of change is very low and the
       input change do not happen every time the real time function is called.

AUTHOR

       Jeff Epler

LICENSE

       GPL