- Datatype package now also supports arbitrarily branching datatypes
(using function types).
- Added new simplification procedure for proving distinctness of
constructors.
- dtK is now a reference.
(* Title: CTT/bool
ID: $Id$
Author: Lawrence C Paulson, Cambridge University Computer Laboratory
Copyright 1991 University of Cambridge
The two-element type (booleans and conditionals)
*)
Bool = CTT +
consts Bool :: "t"
true,false :: "i"
cond :: "[i,i,i]=>i"
rules
Bool_def "Bool == T+T"
true_def "true == inl(tt)"
false_def "false == inr(tt)"
cond_def "cond(a,b,c) == when(a, %u.b, %u.c)"
end