UNFOLD_RIGHT_RULE
unwindLib.UNFOLD_RIGHT_RULE : (thm list -> thm -> thm)
Expands sub-components of a hardware description using their definitions.
UNFOLD_RIGHT_RULE thl behaves as follows:
A |- !z1 ... zr. t = ?y1 ... yp. t1 /\ ... /\ tn
--------------------------------------------------------
B u A |- !z1 ... zr. t = ?y1 ... yp. t1' /\ ... /\ tn'
where each ti' is the result of rewriting ti with the theorems in
thl. The set of assumptions B is the union of the instantiated
assumptions of the theorems used for rewriting. If none of the rewrites
are applicable to a ti, it is unchanged.
Failure
Fails if the second argument is not of the required form, though either
or both of r and p may be zero.
Example
#UNFOLD_RIGHT_RULE [ASSUME "!in out. INV(in,out) = !(t:num). out t = ~(in t)"]
# (ASSUME "!(in:num->bool) out. BUF(in,out) = ?l. INV(in,l) /\ INV(l,out)");;
.. |- !in out.
BUF(in,out) = (?l. (!t. l t = ~in t) /\ (!t. out t = ~l t))