Date: Thu, 23 Mar 1995 21:20:02 -0800 From: Mark Diekhans <markd@grizzly.com> To: freebsd-bugs Subject: misc/272: Broken printf floating point formatting Message-ID: <199503240520.VAA14745@freefall.cdrom.com> In-Reply-To: Your message of Thu, 23 Mar 1995 20:47:31 -0800 <199503240447.UAA01545@Grizzly.COM>
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>Number: 272
>Category: misc
>Synopsis: Broken printf floating point formatting
>Confidential: yes
>Severity: serious
>Priority: medium
>Responsible: freebsd-bugs (FreeBSD bugs mailing list)
>State: open
>Class: sw-bug
>Submitter-Id: current-users
>Arrival-Date: Thu Mar 23 21:20:01 1995
>Originator: Mark Diekhans
>Organization:
== Mark Diekhans (markd@grizzly.com) ==
>Release: FreeBSD 2.0-RELEASE i386
>Environment:
>Description:
printf ("%e", 3.42e12); outputs "3.42e+12", it should output "3.420000e+12".
printf ("%#.0f", 0.0); outputs "0", it should output "0.".
printf ("%#.0g", 0.0); outputs "0.e+00", it should output "0.".
These results conflict with the printf (3) manual page and the behavior
on other systems (I tried SunOS, HP-UX and SCO).
>How-To-Repeat:
#include <stdio.h>
void
Out (format, valueStr, value)
char *format;
char *valueStr;
double value;
{
char spec [1024];
strcpy (spec, "%s of %s = ");
strcat (spec, format);
strcat (spec, "\n");
printf (spec, format, valueStr, value);
}
int
main ()
{
Out ("%e", "3.42e12", 3.42e12);
Out ("%.4e", "-9.99996", -9.99996);
Out ("%#.0f", "0.0", 0.0);
Out ("%#.0g", "0.0", 0.0);
return 0;
}
>Fix:
>Audit-Trail:
>Unformatted:
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