dest_eq
boolSyntax.dest_eq : term -> term * term
Term destructor for equality.
If M
is the term t1 = t2
, then
dest_eq M
returns (t1, t2)
.
Fails if M
is not an equality.
boolSyntax.mk_eq
, boolSyntax.is_eq
, boolSyntax.lhs
, boolSyntax.rhs