Date: Fri, 25 Apr 2003 08:40:12 -0700 (PDT) From: "Sergey A. Osokin" <osa@freebsd.org.ru> To: freebsd-standards@FreeBSD.org Subject: Re: standards/51292: [PATCH] add ecvt()/fcvt()/gcvt() functions (SUSv3) Message-ID: <200304251540.h3PFeCv4084528@freefall.freebsd.org>
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The following reply was made to PR standards/51292; it has been noted by GNATS.
From: "Sergey A. Osokin" <osa@freebsd.org.ru>
To: Alexey Zelkin <phantom@FreeBSD.org.ua>
Cc: FreeBSD-gnats-submit@freebsd.org
Subject: Re: standards/51292: [PATCH] add ecvt()/fcvt()/gcvt() functions (SUSv3)
Date: Fri, 25 Apr 2003 19:33:06 +0400
On Fri, Apr 25, 2003 at 05:02:07PM +0300, Alexey Zelkin wrote:
> On Fri, Apr 25, 2003 at 04:32:10PM +0400, Sergey A. Osokin wrote:
> > On Fri, Apr 25, 2003 at 03:19:37PM +0300, Alexey Zelkin wrote:
> > > On Fri, Apr 25, 2003 at 12:38:51PM +0400, Sergey A. Osokin wrote:
> > >
> > > > > > >Number: 51292
> > > > > > >Category: standards
> > > > > > >Synopsis: [PATCH] add ecvt()/fcvt()/gcvt() functions (SUSv3)
>
> > > Actually, all these cases should be handled by setlocale() itself. And
> > > after call to 'setlocale()' you should use lconv() to receive current
> > > radix character.
> > > I also would object to using of setlocale() from libc's function internally.
> >
> > Hmm, but from SUSv3:
> > <quote>
> > The radix character is determined by the current locale. If
> > setlocale() has not been called successfully, the default locale,
> > POSIX, is used. The default locale specifies a period
> > ( '.' ) as the radix character.
> > </quote>
>
> And what? It does not mean that setlocale() should be called
> in *cvt() functions.
>
> Can you ever count amount of possible problems caused by call to setlocale()
> in middle of libc function ?
BTW
if (setlocale(LC_NUMERIC, NULL) == NULL) {
radix = '.';
n_sign = '-';
p_sign = '+';
} else {
lc = localeconv();
radix = *lc->decimal_point;
n_sign = *lc->negative_sign;
p_sign = *lc->positive_sign;
}
Correct?
> > > It's a application's problem to decide which locale to use and [fge]cvt()
> > > should use locale previously set by application.
> >
> > AFAIK only gcvt() have locale-specific "problem". I can't find
> > any locale-specific words in documentation of [ef]cvt. Correct
> > me if I'm wrong...
>
> You may find 'radix character' related words there.
--
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