From mboxrd@z Thu Jan 1 00:00:00 1970 X-Spam-Checker-Version: SpamAssassin 3.4.4 (2020-01-24) on inbox.vuxu.org X-Spam-Level: X-Spam-Status: No, score=-1.1 required=5.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,MAILING_LIST_MULTI,RCVD_IN_MSPIKE_H2 autolearn=ham autolearn_force=no version=3.4.4 Received: (qmail 10421 invoked from network); 20 Sep 2022 14:22:52 -0000 Received: from second.openwall.net (193.110.157.125) by inbox.vuxu.org with ESMTPUTF8; 20 Sep 2022 14:22:52 -0000 Received: (qmail 17824 invoked by uid 550); 20 Sep 2022 14:22:49 -0000 Mailing-List: contact musl-help@lists.openwall.com; run by ezmlm Precedence: bulk List-Post: List-Help: List-Unsubscribe: List-Subscribe: List-ID: Reply-To: musl@lists.openwall.com Received: (qmail 17792 invoked from network); 20 Sep 2022 14:22:48 -0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=inria.fr; s=dc; h=date:from:to:cc:subject:message-id:in-reply-to: references:mime-version; bh=MPwpT7ifNPYuSNGxD15orAzDx1+ReUjInlfcuN3HaHc=; b=TOuaMPz6vSPczMdg6pIWGPjTIzBBofS+LoWvWvqGe6/sVBe8FvkUIhI+ FCaUw7TREzZjsDNvZ5dlkdrb+qBFsCSizRkbRgdqt7SzzjpaDqde0eLE7 WAsWY0CHeDbsLYfHo1igjHwRBFSkiRCCL0UfDy+RHodBCyRAJ5ll9US+0 Y=; Authentication-Results: mail2-relais-roc.national.inria.fr; dkim=none (message not signed) header.i=none; spf=SoftFail smtp.mailfrom=jens.gustedt@inria.fr; dmarc=fail (p=none dis=none) d=inria.fr X-IronPort-AV: E=Sophos;i="5.93,330,1654552800"; d="scan'208";a="53689446" Date: Tue, 20 Sep 2022 16:22:36 +0200 From: =?UTF-8?B?SuKCkeKCmeKCmw==?= Gustedt To: Rich Felker Cc: musl@lists.openwall.com Message-ID: <20220920162236.38485fe3@inria.fr> In-Reply-To: <20220920141517.GP9709@brightrain.aerifal.cx> References: <20220912135904.GI9709@brightrain.aerifal.cx> <20220912164251.53a32cac@inria.fr> <20220919150916.GP9709@brightrain.aerifal.cx> <20220919175952.GB2158779@port70.net> <20220919181039.GS9709@brightrain.aerifal.cx> <20220920111934.4dcdc985@inria.fr> <20220920122829.GM9709@brightrain.aerifal.cx> <20220920152929.66a33c9b@inria.fr> <20220920135553.GO9709@brightrain.aerifal.cx> <20220920160803.6bd6a422@inria.fr> <20220920141517.GP9709@brightrain.aerifal.cx> Organization: inria.fr X-Mailer: Claws Mail 4.0.0 (GTK+ 3.24.33; x86_64-pc-linux-gnu) X-Face: iVBORw0KGgoAAAANSUhEUgAAADAAAAAwBAMAAAClLOS0AAAAAXNSR0IArs4c6QAAACRQTFRFERslNjAsLTE9Ok9wUk9TaUs8iWhSrYZkj42Rz6aD3sGZ MIME-Version: 1.0 Content-Type: multipart/signed; boundary="Sig_/uYufZE8=_+srxxsvIZGS.JL"; protocol="application/pgp-signature"; micalg=pgp-sha1 Subject: Re: [musl] [PATCH] vfprintf: support C2x %b and %B conversion specifiers --Sig_/uYufZE8=_+srxxsvIZGS.JL Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable Rich, on Tue, 20 Sep 2022 10:15:18 -0400 you (Rich Felker ) wrote: > On Tue, Sep 20, 2022 at 04:08:03PM +0200, J=E2=82=91=E2=82=99=E2=82=9B Gu= stedt wrote: > > Rich, > >=20 > > on Tue, 20 Sep 2022 09:55:54 -0400 you (Rich Felker > > ) wrote: > > =20 > > > In general, offering non-portable functionality that applications > > > can't already generally expect to have on popular systems, with > > > no way to probe for availability, does not seem useful, and it's > > > even less useful when there's a trivial portable way to do the > > > same thing. =20 > >=20 > > Unfortunately, for the the bit-precise types there isn't. The > > supported types may be wider than `long long` (128 and even 256 will > > be common values that will probably widely supported) and then the > > task of printing them gets as nasty as for today's `__int128`. My > > hope was really to get all of these done for once, such that our > > users may use their creativity to do more useful stuff. =20 >=20 > Well how are programmers supposed to probe what's available, and what > are they supposed to do as fallback when support is not available? And > what is the upper limit? There is a feature test macro for the maximum width of bit-precise integers, `BITINT_MAXWIDTH`. It is guaranteed to be at least `ULLONG_WIDTH` but can (and will) be larger on many platforms. J=E2=82=91=E2=82=99=E2=82=9B --=20 :: INRIA Nancy Grand Est ::: Camus ::::::: ICube/ICPS ::: :: :::::::::::::::::::::: gsm France : +33 651400183 :: :: ::::::::::::::: gsm international : +49 15737185122 :: :: http://icube-icps.unistra.fr/index.php/Jens_Gustedt :: --Sig_/uYufZE8=_+srxxsvIZGS.JL Content-Type: application/pgp-signature Content-Description: OpenPGP digital signature -----BEGIN PGP SIGNATURE----- iF0EARECAB0WIQSN9stI2OFN1pLljN0P0+hp2tU34gUCYynMrAAKCRAP0+hp2tU3 4jh9AJ9tVW2VSVKO6QqPet1O18McbqUSewCfRrKrchfbWafF5iycbo4E+EDZcGM= =+P8D -----END PGP SIGNATURE----- --Sig_/uYufZE8=_+srxxsvIZGS.JL--