For device with more than 2 nodes, and alli not set, the vcurr_xxx
nodes did contain a probe_int_ section which made them to be
not saved. While o.k. for power measurement, this was not o.k. for
measuring current.
* Enable current mesurement for I source
* Look at only the first 2 nodes of S and W switches
and F and G controlled current sources, measure current
with = voltage source added to second node. So we get
I(Fx), I(Gx), I(Sx), and I(Wx).
If no .save or save command given by the user, add '.save all' internally.
To do so, check for .save or save.
Update to the .probe p command (power measurement)
Add probe_int_ to internal nodes and instance names, where appropriate.
These nodes will be disregarded when setting up the plot structure.
current positive when flowing into device, e.g.
Ic, Ib of a positively biased npn.
Add current measurement for all nodes of a device,
e.g. .probe i(Q1) will measure Ic, Ib, Ie (and Is)
Code to enable current measurements at all top level
device pins and to enable differential voltage measurements
between two (arbitrary, top level) device nodes.
Adds 0 V voltage sources for current measurements to selected or all
device nodes at top level (including X lines)
Adds an E source excited by two arbitrary nodes for differential
potential (aka voltage) measurements between these nodes
Function inp_probe() is called from inpcom.c
Holger Vogt
Carsten Schoenert