From zack at cogsci.ucsd.edu  Tue May 22 17:49:46 2007
From: zack at cogsci.ucsd.edu (Zack Weinberg)
Date: Tue, 22 May 2007 08:49:46 -0700
Subject: [Rd] R 2.5.0 refuses to print enough digits to recover exact
	floating point values
In-Reply-To: <4652C19F.1040509@statistik.uni-dortmund.de>
References: <eb97335b0705220013m6f3e137cp147d429c46717e24@mail.gmail.com>
	<4652C19F.1040509@statistik.uni-dortmund.de>
Message-ID: <eb97335b0705220849l624d8cai6e49e37e2565ab81@mail.gmail.com>

On 5/22/07, Uwe Ligges <ligges at statistik.uni-dortmund.de> wrote:
> Zack Weinberg wrote:
> >
> > I'd really appreciate some way of forcing R to print enough digits to
> > represent every possible IEEE double value.  I would also argue that
> > this should be the default behavior of dump(), write.table() and
> > friends, and save(...,ascii=TRUE), to prevent data loss.
>
> Example:
>
> formatC(exp(1), digits=100, width=-1)

Well, okay, now what about dump, write.table, save, etc?

zw



[Rd] R 2.5.0 refuses to print enough digits to recover exact floating point values
Zack Weinberg