From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-7.0 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_PASS autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 87DECC282C7 for ; Sat, 26 Jan 2019 22:01:30 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 536D02087F for ; Sat, 26 Jan 2019 22:01:30 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726381AbfAZWBa (ORCPT ); Sat, 26 Jan 2019 17:01:30 -0500 Received: from mx2.mailbox.org ([80.241.60.215]:29440 "EHLO mx2.mailbox.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726373AbfAZWB3 (ORCPT ); Sat, 26 Jan 2019 17:01:29 -0500 Received: from smtp2.mailbox.org (smtp2.mailbox.org [80.241.60.241]) (using TLSv1.2 with cipher ECDHE-RSA-CHACHA20-POLY1305 (256/256 bits)) (No client certificate requested) by mx2.mailbox.org (Postfix) with ESMTPS id DB2A1A107D; Sat, 26 Jan 2019 23:01:27 +0100 (CET) X-Virus-Scanned: amavisd-new at heinlein-support.de Received: from smtp2.mailbox.org ([80.241.60.241]) by spamfilter03.heinlein-hosting.de (spamfilter03.heinlein-hosting.de [80.241.56.117]) (amavisd-new, port 10030) with ESMTP id NQ_ERI7MHIBP; Sat, 26 Jan 2019 23:01:26 +0100 (CET) From: Hauke Mehrtens To: backports@vger.kernel.org Cc: Hauke Mehrtens Subject: [PATCH 4/7] backports: Add CORDIC_FLOAT Date: Sat, 26 Jan 2019 23:00:30 +0100 Message-Id: <20190126220033.27634-5-hauke@hauke-m.de> In-Reply-To: <20190126220033.27634-1-hauke@hauke-m.de> References: <20190126220033.27634-1-hauke@hauke-m.de> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Sender: backports-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: backports@vger.kernel.org This was introduced in Linux commit 58d81d64e06f ("lib: cordic: Move cordic macros and defines to header file") and is used by the b43 and brcmsmac driver. Signed-off-by: Hauke Mehrtens --- backport/backport-include/linux/cordic.h | 12 ++++++++++++ 1 file changed, 12 insertions(+) diff --git a/backport/backport-include/linux/cordic.h b/backport/backport-include/linux/cordic.h index 7f27b007..67d6a4ae 100644 --- a/backport/backport-include/linux/cordic.h +++ b/backport/backport-include/linux/cordic.h @@ -57,4 +57,16 @@ struct cordic_iq cordic_calc_iq(s32 theta); #endif /* __CORDIC_H_ */ #endif /* LINUX_VERSION_CODE > KERNEL_VERSION(3,1,0)) */ + +#ifndef CORDIC_FLOAT +#define CORDIC_ANGLE_GEN 39797 +#define CORDIC_PRECISION_SHIFT 16 +#define CORDIC_NUM_ITER (CORDIC_PRECISION_SHIFT + 2) + +#define CORDIC_FIXED(X) ((s32)((X) << CORDIC_PRECISION_SHIFT)) +#define CORDIC_FLOAT(X) (((X) >= 0) \ + ? ((((X) >> (CORDIC_PRECISION_SHIFT - 1)) + 1) >> 1) \ + : -((((-(X)) >> (CORDIC_PRECISION_SHIFT - 1)) + 1) >> 1)) +#endif + #endif /* _BACKPORT_LINUX_CORDIC_H */ -- 2.20.1 -- To unsubscribe from this list: send the line "unsubscribe backports" in