Re: Floating point bug in vitrual machine?

Article View: borland.public.jbuilder.java.language

Article #19999

Back to borland.public.jbuilder.java.language Previous Next

#19999

From: Brian Burton
Date: Tue, 11 Nov 1997 00:00

38 lines
1565 bytes

512 can be represented with no loss of precision in IEEE floating point
formats.  Integers are not a problem for floating point values as long as the
bits required to represent them fit into the mantissa of the floating point
format.

That looks like a VM bug to me.

All the best,
++Brian

Eric Nagler wrote:
> 
> Yeah. It's how floating point numbers are stored internally --
> certainly not an exact representation. So it may actually be
> 511.99999999999, and then you truncate the fraction.
> 
> On Tue, 11 Nov 1997 15:07:33 -0800, Antonio Garcia
> <garc_an@eng.printronix.com> wrote:
> 
> >Try this:
> >
> >  {
> >       Float f = new Float(512.0);
> >       int i = f.intValue();
> >       System.out.println(i);
> >  }
> >
> >I get 511 every time.  Any ideas why?
> >
> >P133/Windows NT 4.0 SP 1/Jbuilder Pro
> >
> >--AG

-- 
Brian Burton                        Custom Software Development
Burton Computer Corporation         Java, C++, Orbix, Tuxedo
http://www.burton-computer.com      OO Consulting and Mentoring

Technical Details

Message-ID: <346900F7.4D8A0C70@burton-computer.com>

Path: arc1-ca.pugleaf.net!unknown!not-for-mail

References: <3468E535.5AEB@eng.printronix.com> <346bf131.24828878@forums.borland.com>

Show Full Headers

Complete Article Headers

X-Google-Language: ENGLISH,ASCII-7-bit
X-Google-Thread: f74b3,70cc12fd65535774
X-Google-Attributes: gidf74b3,public
From: Brian Burton <brian.burton@burton-computer.com>
Subject: Re: Floating point bug in vitrual machine?
Date: 1997/11/11
Message-ID: <346900F7.4D8A0C70@burton-computer.com>
X-Deja-AN: 288760463
References: <3468E535.5AEB@eng.printronix.com> <346bf131.24828878@forums.borland.com>
Organization: Burton Computer Corporation
Newsgroups: borland.public.jbuilder.java.language

Reply to Parent Message