From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:58275) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1VCT5J-0000u9-Do for qemu-devel@nongnu.org; Thu, 22 Aug 2013 07:29:55 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1VCT5D-0002YO-4y for qemu-devel@nongnu.org; Thu, 22 Aug 2013 07:29:49 -0400 Received: from mail-pb0-f42.google.com ([209.85.160.42]:43563) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1VCT5C-0002YB-UY for qemu-devel@nongnu.org; Thu, 22 Aug 2013 07:29:43 -0400 Received: by mail-pb0-f42.google.com with SMTP id un15so1660831pbc.1 for ; Thu, 22 Aug 2013 04:29:42 -0700 (PDT) From: Alexey Kardashevskiy Date: Thu, 22 Aug 2013 21:29:23 +1000 Message-Id: <1377170965-9905-2-git-send-email-aik@ozlabs.ru> In-Reply-To: <1377170965-9905-1-git-send-email-aik@ozlabs.ru> References: <1377170965-9905-1-git-send-email-aik@ozlabs.ru> Subject: [Qemu-devel] [PATCH v3 1/3] int128: add int128_exts64() List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-devel@nongnu.org Cc: Alexey Kardashevskiy , Paolo Bonzini , Alex Williamson , Peter Maydell This adds macro to extend signed 64bit value to signed 128bit value. Signed-off-by: Alexey Kardashevskiy --- Changes: v3: * (.hi = (a >> 63) ? -1 : 0) changed to (.hi = (a < 0) ? -1 : 0) --- include/qemu/int128.h | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/include/qemu/int128.h b/include/qemu/int128.h index 9ed47aa..ef87e5e 100644 --- a/include/qemu/int128.h +++ b/include/qemu/int128.h @@ -38,6 +38,11 @@ static inline Int128 int128_2_64(void) return (Int128) { 0, 1 }; } +static inline Int128 int128_exts64(int64_t a) +{ + return (Int128) { .lo = a, .hi = (a < 0) ? -1 : 0 }; +} + static inline Int128 int128_and(Int128 a, Int128 b) { return (Int128) { a.lo & b.lo, a.hi & b.hi }; -- 1.8.4.rc4