dest_imp : term -> term * term

SYNOPSIS
Breaks apart an implication into antecedent and consequent.

DESCRIPTION
dest_imp is a term destructor for implications. Thus
   dest_imp `t1 ==> t2`
returns
   (`t1`,`t2`)

FAILURE CONDITIONS
Fails with dest_imp if term is not an implication.

SEE ALSO
is_imp, mk_imp, strip_imp.