From: Emil Block <blime@his.com>
To: gcc-help@gcc.gnu.org
Subject: [Fwd: Formatted Read Accuracy]
Date: Wed, 09 Oct 2002 11:34:00 -0000 [thread overview]
Message-ID: <3DA4763E.626DB3AD@his.com> (raw)
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From: Emil Block <blime@his.com>
To: kisa@centropolisfx.com
Subject: Re: Formatted Read Accuracy
Date: Wed, 09 Oct 2002 14:00:35 -0400
Message-ID: <3DA46EC3.F332AA1A@his.com>
Gokhan Kisacikoglu wrote:
>
> > input xllt is 67.9936 and it becomes 67.9935989
> >
>
> These happen because of floating point accuracy, it has nothing to do
> with the reader or your format statement. Certain numbers can not be
> accurately represented with float numbers (even with double
> precision)...
>
> Good luck,
> -kisa
I don't understand -- the numbers are correctly read with the F77 compiler
used on the same source code. This is only one example of hundreds of numbers
that are read and G77 adds change in the fifth thru seventh decimal places on
all of them.
Blime
next reply other threads:[~2002-10-09 18:34 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-10-09 11:34 Emil Block [this message]
2002-10-09 11:43 ` Eljay Love-Jensen
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