2014-09-09 16:21:30 -07:00
|
|
|
import data.int
|
|
|
|
open int
|
|
|
|
|
2014-10-02 16:20:52 -07:00
|
|
|
constant abs : int → int
|
2014-09-09 16:21:30 -07:00
|
|
|
notation `|`:40 A:40 `|` := abs A
|
2014-10-02 16:20:52 -07:00
|
|
|
constants a b c : int
|
2014-09-09 16:21:30 -07:00
|
|
|
check |a + |b| + c|
|