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Re: Floating-point round-off problems.

To: "Mr. Spock" <Spock%samson.cadr.dialnet.symbolics.com@RELAY.CS.NET>
Subject: Re: Floating-point round-off problems.
From: kanderso%dino.bbn.com@RELAY.CS.NET
Date: Thu, 10 Aug 89 16:18:05 EDT
Cc: slug-out%samson.cadr.dialnet.symbolics.com@RELAY.CS.NET
In-reply-to: Your message of Thu, 10 Aug 89 08:00:00 -0700. <19890810150023.3.SPOCK@SAMSON.CADR.DIALNET.SYMBOLICS.COM>

  Date: Thu, 10 Aug 89 08:00 PDT
  From: Spock@SAMSON.CADR.DIALNET.SYMBOLICS.COM (Mr. Spock)
  Subject: Floating-point round-off problems.
  To: slug-out@SAMSON.CADR.DIALNET.SYMBOLICS.COM
  Message-ID: <19890810150023.3.SPOCK@SAMSON.CADR.DIALNET.SYMBOLICS.COM>

  Does anyone have a hack to correct for the losing floating-point math on
  these Symbolics machines?

  Consider:

      (- 6 5.9) returns -> 0.099999905 instead of 0.1

What is losing about this?  What answer did you expect?

References:
- Floating-point round-off problems.
  - From: "Mr. Spock" <Spock%samson.cadr.dialnet.symbolics.com@RELAY.CS.NET>

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