From patchwork Mon Dec 12 03:08:09 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Peter Xu X-Patchwork-Id: 9469971 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id 7582560476 for ; Mon, 12 Dec 2016 03:08:39 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 6889728307 for ; Mon, 12 Dec 2016 03:08:39 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 5D2C6283F4; Mon, 12 Dec 2016 03:08:39 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-6.9 required=2.0 tests=BAYES_00,RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 0C9B528307 for ; Mon, 12 Dec 2016 03:08:39 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753915AbcLLDIg (ORCPT ); Sun, 11 Dec 2016 22:08:36 -0500 Received: from mx1.redhat.com ([209.132.183.28]:38516 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753807AbcLLDIf (ORCPT ); Sun, 11 Dec 2016 22:08:35 -0500 Received: from int-mx11.intmail.prod.int.phx2.redhat.com (int-mx11.intmail.prod.int.phx2.redhat.com [10.5.11.24]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id 8E0AA85365; Mon, 12 Dec 2016 03:08:35 +0000 (UTC) Received: from pxdev.xzpeter.org (vpn1-5-149.pek2.redhat.com [10.72.5.149]) by int-mx11.intmail.prod.int.phx2.redhat.com (8.14.4/8.14.4) with ESMTP id uBC38M7u005906; Sun, 11 Dec 2016 22:08:32 -0500 From: Peter Xu To: qemu-devel@nongnu.org, kvm@vger.kernel.org Cc: drjones@redhat.com, agordeev@redhat.com, jan.kiszka@web.de, rkrcmar@redhat.com, pbonzini@redhat.com, peterx@redhat.com Subject: [kvm-unit-tests PATCH v8 03/14] libcflat: introduce is_power_of_2() Date: Mon, 12 Dec 2016 11:08:09 +0800 Message-Id: <1481512100-10380-4-git-send-email-peterx@redhat.com> In-Reply-To: <1481512100-10380-1-git-send-email-peterx@redhat.com> References: <1481512100-10380-1-git-send-email-peterx@redhat.com> X-Scanned-By: MIMEDefang 2.68 on 10.5.11.24 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.25]); Mon, 12 Dec 2016 03:08:35 +0000 (UTC) Sender: kvm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: kvm@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Suggested-by: Andrew Jones Reviewed-by: Andrew Jones Signed-off-by: Peter Xu --- lib/libcflat.h | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/lib/libcflat.h b/lib/libcflat.h index c622198..8455c3d 100644 --- a/lib/libcflat.h +++ b/lib/libcflat.h @@ -104,4 +104,9 @@ do { \ } \ } while (0) +static inline bool is_power_of_2(unsigned long n) +{ + return n && !(n & (n - 1)); +} + #endif