retrieve a logical signal
losig_list *getlosig(ptfig, index)
Pointer to the figure in which the signal should be seeked
Index of the signal
getlosig looks in the list of signals of the logical model pointed
to by ptfig for a signal identified by its index. This signal
is unique, since the index is the signal identifier.
getlosig returns a pointer to the signal that matches the
"*** mbk error *** illegal getlosig signal index
in figure ptfig->NAME
No signal has index as INDEX in the figure.
losig_list *get_sig_by_name(figname, index)
return getlosig(getlofig(figname), index);