22 lines
617 B
Text
22 lines
617 B
Text
-- Copyright (c) 2014 Microsoft Corporation. All rights reserved.
|
|
-- Released under Apache 2.0 license as described in the file LICENSE.
|
|
-- Author: Leonardo de Moura
|
|
prelude
|
|
import init.datatypes init.reserved_notation
|
|
|
|
namespace bool
|
|
inline definition cond {A : Type} (b : bool) (t e : A) :=
|
|
bool.rec_on b e t
|
|
|
|
inline definition bor (a b : bool) :=
|
|
bool.rec_on a (bool.rec_on b ff tt) tt
|
|
|
|
inline definition band (a b : bool) :=
|
|
bool.rec_on a ff (bool.rec_on b ff tt)
|
|
|
|
inline definition bnot (a : bool) :=
|
|
bool.rec_on a tt ff
|
|
end bool
|
|
|
|
notation a || b := bool.bor a b
|
|
notation a && b := bool.band a b
|