From owner-freebsd-questions  Thu Jan 16 15:28: 5 2003
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From: Kent Stewart <kstewart@owt.com>
To: Ugen <ugen@xonix.com>, freebsd-questions@FreeBSD.ORG
Subject: Re: printf prints  WRONG double precision values
Date: Thu, 16 Jan 2003 15:28:00 -0800
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On Thursday 16 January 2003 01:47 pm, Ugen wrote:
> Try this:
>
> #include <stdio.h>
> int main()
> {
> double pi =3D 3.14159265358979323846 ;
>
>          printf("%20.19f\n", pi);
> }
>
> and here is what you get:
> host: [16:45] [127] /tmp>./test
> 3.1415926535897931160
>
>   The error in last 4 or digits is obvious. It seems
> that the culprit is __dtoa which incorrectly turns
> double precision numbers into strings.
> This is on FreeBSD 4.3 release..
>
> Ideas?

I thought that a 64-bit floating point was limited to around 16 digits.=20
That ends as ...793.

Kent
> --Ugen
>
>
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--=20
Kent Stewart
Richland, WA

http://users.owt.com/kstewart/index.html


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