meas_deriv :
A primitive for measuring the n-th derivative value of an xreal-typed signal at triggering events.

The meas_deriv primitive measures the n-th derivative value of an xreal-typed signal in when it is triggered by the input trig. The real-typed output out indicates the sampled n-th derivative value of the signal at the triggering events. The parameter order specifies the order of derivative (default: 1). The output out initially takes an “NaN (not-a-number)” value until the first triggering event occurs, and gets updated to a finite value once a triggering event occurs.

Input/Output Terminals

Name	I/O	Type	Description
out	output	real	slope
in	input	xreal	input signal
trig	input	xbit	trigger

Parameters

Name	Type	Default	Unit	Description
order	integer	1	None	order of derivative