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Re: weird math
- To: info-mcl@cambridge.apple.com
- Subject: Re: weird math
- From: Al Reich <reich@AUSTIN.LOCKHEED.COM>
- Date: Thu, 26 Aug 93 10:21:07 CDT
- Cc: reich@AUSTIN.LOCKHEED.COM
- Mailer: Elm [revision: 66.25]
FYI, here's what Lucid yields on an HP (HP Common Lisp, Development
Environment, 25 June 1992, HP-9000, Series 300/400 Dev Lisp 98688C,
Rev. A.04.0.2)...
> (= 1.4 (/ 7 5))
NIL
> (= 1.4 (coerce (/ 7 5) 'float))
T
> (= 1.5 (/ 3 2))
T
> (coerce 1.4s0 'double-float)
1.4
> single-float-epsilon
1.1107651257113996E-16
> (> (- 1.4d0 1.4s0) single-float-epsilon)
NIL
> (= 1.4 (coerce (/ 7 5) 'double-float))
T
Al Reich
Lockheed - Austin Division
reich@austin.lockheed.com