Date: Mon, 19 Mar 2001 12:28:01 +0200 From: Peter Pentchev <roam@orbitel.bg> To: G Hasse <gh@raditex.se> Cc: dwmalone@FreeBSD.org, freebsd-bugs@FreeBSD.org Subject: Re: misc/25904: Error in the printf-function. Message-ID: <20010319122801.D515@ringworld.oblivion.bg> In-Reply-To: <Pine.BSF.4.21.0103191113530.12867-100000@gandalf.sickla.raditex.se>; from gh@raditex.se on Mon, Mar 19, 2001 at 11:15:43AM %2B0100 References: <200103191005.f2JA51r98657@freefall.freebsd.org> <Pine.BSF.4.21.0103191113530.12867-100000@gandalf.sickla.raditex.se>
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On Mon, Mar 19, 2001 at 11:15:43AM +0100, G Hasse wrote:
> On Mon, 19 Mar 2001 dwmalone@FreeBSD.org wrote:
>
> > Synopsis: Error in the printf-function.
> >
> > State-Changed-From-To: open->closed
> > State-Changed-By: dwmalone
> > State-Changed-When: Mon Mar 19 02:04:13 PST 2001
> > State-Changed-Why:
> > Seems to be due to misues of printf.
>
> In Linux printf I get this printout...
>
> Var is 2.256102 /* an address printed as float. Stupid! but the
> Value is 2.400000 way to print an float adress? */
> Var is 2.256102
> Value is 4
> Var is 4
>
> So way is the conversion of an address in FreeBSD 0?
To print a pointer, you use printf("%p", ptr). To print a float
variable, you use printf("%f", var). To print a float value, which
hangs at the end of a pointer to a float, you must first dereference
the pointer, and pass the value to printf() as a simple float:
float v, *p;
v = 2.5;
p = &v;
printf("v is %f, p is %p, *p is %f\n", v, p, *p);
G'luck,
Peter
--
If wishes were fishes, the antecedent of this conditional would be true.
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