inv_func :
A multiplicative inverse function (i.e. reciprocal function) for an xreal-typed signal.

The inv_func primitive produces an xreal-typed output which is a reciprocal of an xreal-typed input. That is,

    out = 1/in.

The parameter scale sets the additional scale factor applied to the output.

The primitive approximates the 1/x function with a piecewise-linear (PWL) function and the parameters abstol and reltol set the absolute and relative tolerances of such PWL approximation, respectively. Specifically, the parameter abstol determines the smallest input possible (=abstol) and largest input possible (=1/abstol), and the parameter reltol determines the interval width of each PWL section.

NOTE: this primitive adds a unit timestep delay from its input to output for synchronization.

Input/Output Terminals

Name	I/O	Type	Description
out	output	xreal	output signal
in	input	xreal	input signal

Parameters

Name	Type	Default	Unit	Description
scale	real	1.0	None	scale factor
abstol	real	1e-12	None	absolute tolerance
reltol	real	1e-2	None	relative tolerance