From unknown Sat Jun 14 00:07:42 2025 Content-Disposition: inline Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-Mailer: MIME-tools 5.509 (Entity 5.509) Content-Type: text/plain; charset=utf-8 From: bug#18225 <18225@debbugs.gnu.org> To: bug#18225 <18225@debbugs.gnu.org> Subject: Status: Lack of type-converting shared arrays (feature request) Reply-To: bug#18225 <18225@debbugs.gnu.org> Date: Sat, 14 Jun 2025 07:07:42 +0000 retitle 18225 Lack of type-converting shared arrays (feature request) reassign 18225 guile submitter 18225 Panicz Maciej Godek severity 18225 wishlist thanks From debbugs-submit-bounces@debbugs.gnu.org Fri Aug 08 11:48:36 2014 Received: (at submit) by debbugs.gnu.org; 8 Aug 2014 15:48:36 +0000 Received: from localhost ([127.0.0.1]:35601 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.80) (envelope-from ) id 1XFmPD-0008DV-Gj for submit@debbugs.gnu.org; Fri, 08 Aug 2014 11:48:35 -0400 Received: from eggs.gnu.org ([208.118.235.92]:55027) by debbugs.gnu.org with esmtp (Exim 4.80) (envelope-from ) id 1XFmPA-0008DG-T1 for submit@debbugs.gnu.org; Fri, 08 Aug 2014 11:48:33 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1XFmP4-0001Fo-SD for submit@debbugs.gnu.org; Fri, 08 Aug 2014 11:48:27 -0400 X-Spam-Checker-Version: SpamAssassin 3.3.2 (2011-06-06) on eggs.gnu.org X-Spam-Level: X-Spam-Status: No, score=-1.9 required=5.0 tests=BAYES_00,FREEMAIL_FROM, T_DKIM_INVALID autolearn=disabled version=3.3.2 Received: from lists.gnu.org ([2001:4830:134:3::11]:58074) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1XFmP4-0001Fi-P0 for submit@debbugs.gnu.org; Fri, 08 Aug 2014 11:48:26 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:56666) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1XFmP3-0004QQ-JD for bug-guile@gnu.org; Fri, 08 Aug 2014 11:48:26 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1XFmP2-0001DH-MR for bug-guile@gnu.org; Fri, 08 Aug 2014 11:48:25 -0400 Received: from mail-vc0-x22c.google.com ([2607:f8b0:400c:c03::22c]:54561) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1XFmP2-0001DB-IY for bug-guile@gnu.org; Fri, 08 Aug 2014 11:48:24 -0400 Received: by mail-vc0-f172.google.com with SMTP id im17so8601321vcb.17 for ; Fri, 08 Aug 2014 08:48:24 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:date:message-id:subject:from:to:content-type; bh=r1ZVzprwqu7zFqC2VmWSZoSPdwao87vvDk+SJercmAc=; b=lM+m8YiiKE9O3HO+fHKoaQKcfWVnoqKJtKUOGwpYfjKvijpIQvmnjcCFA6ZDPzgSpB MaomvDaegrZvTLUeYXEllFRoX7lqGLWqKNv+rBm+KRZGr11iuYi0fz0pOwuT9gLMm7fe zRgetGMYN2v0QVzqMygmZJaOt6hH2P2qG7zqVvyZcEsRHe6Aat79Oy4sX+LkXWEaEUvQ M5fi7TgZSBusuHlthZnME+iuuxYLnjyY5frFiJqZJyZDFUF4mzaV903ea5KVR1BAXaH0 nbZfX1bgRGK54T2ge2YtNoV14QyqGD9NAvAsjOZvZAn8f6onq8OAnaXcurNiieoG/Q9C ggaA== MIME-Version: 1.0 X-Received: by 10.220.190.197 with SMTP id dj5mr22349522vcb.19.1407512903889; Fri, 08 Aug 2014 08:48:23 -0700 (PDT) Received: by 10.221.66.79 with HTTP; Fri, 8 Aug 2014 08:48:23 -0700 (PDT) Date: Fri, 8 Aug 2014 17:48:23 +0200 Message-ID: Subject: Lack of type-converting shared arrays (feature request) From: Panicz Maciej Godek To: bug-guile@gnu.org Content-Type: text/plain; charset=UTF-8 X-detected-operating-system: by eggs.gnu.org: Error: Malformed IPv6 address (bad octet value). X-detected-operating-system: by eggs.gnu.org: Error: Malformed IPv6 address (bad octet value). X-Received-From: 2001:4830:134:3::11 X-Spam-Score: -4.0 (----) X-Debbugs-Envelope-To: submit X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: debbugs-submit-bounces@debbugs.gnu.org Sender: "Debbugs-submit" X-Spam-Score: -4.0 (----) While it is possible to shuffle with array indices arbitrarily, the ability to convert array types is very limited. For example, it would be nice to be able convert a uniform vector of unsigned bytes to a uniform vector of some other size: (define bytes #u8(0 0 255 255)) (define words (make-typed-shared-array 'u16 (native-endianness) bytes (lambda(i)(list (* i 2))) '(0 1)) words ====> #u16(0 65535) In addition to SRFI-4 types, the conversion should be compatible with R6RS bytevectors