module: latch1
parameters: 
inputs:  double_interp latch double_interp d 
outputs:  double_interp q
static_variables: double prev_q
classes:  Latch lat1()
init: 
prev_q = -1.0;
code:
q = prev_q;
lat1.inp(d,latch);
prev_q = lat1.out; 
