Date: Thu, 16 Jan 2003 16:47:32 -0500 From: Ugen <ugen@xonix.com> To: freebsd-questions@FreeBSD.ORG Subject: printf prints WRONG double precision values Message-ID: <3E272874.8060706@xonix.com>
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Try this:
#include <stdio.h>
int main()
{
double pi = 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?
--Ugen
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