30 Déc
2014
30 Déc
'14
15:07
On page16 of the above book, it show (- 1.5 1/2) returning 1.0. When I do such in Gambit, I get:Gambit v4.7.3
(+ 1/2 1/2)
1
(- 1.5 1/2)
1. Here are some other results:Chicken Scheme#;1> (- 1.5 1/2)
Warning: cannot represent exact fraction - coerced to flonum: "1/2" 1. #;2> RacketC:\Users\Steve>racket Welcome to Racket v6.0.1.
(- 1.5 1/2)
1.0
LarcenyLarceny v0.97 "Funny in the Head" (Aug 19 2009 14:35:39, precise:Win32:unified)
(- 1.5 1/2)
1.0
MIT Scheme(- 1.5 1/2);Value: 1. Petite Chez Scheme> (- 1.5 1/2) 1.0
SCM 5e7> (- 1.5 1/2) 1.0
Why is there such a variety? Steve