From patchwork Mon Jan 24 17:20:27 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Andy Shevchenko X-Patchwork-Id: 12722491 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id BF6E1C433F5 for ; Mon, 24 Jan 2022 17:20:34 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S244390AbiAXRUb (ORCPT ); Mon, 24 Jan 2022 12:20:31 -0500 Received: from mga14.intel.com ([192.55.52.115]:58855 "EHLO mga14.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S244321AbiAXRU2 (ORCPT ); Mon, 24 Jan 2022 12:20:28 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1643044828; x=1674580828; h=from:to:cc:subject:date:message-id:mime-version: content-transfer-encoding; bh=gDQSUskimsF+BvPq9Sv63P2zlzyWFSa/xN8KMVRN7Z4=; b=fsqK1u14VR/IvEwTXzV+ZUYVeOIO9w5GqP9psy+4Gmlerk+3snU6GfUI IcQmKO04COQCzuNknVvnQ1UYYI7IruBm3HFyb+Qk4UQn9J14UzGPMV+Ho IZAzNWn+WN5/tOLGf0/qQlvW31Lx8CN1UqJkRhM3elnv1LCWJyEbvTZxH rLXJotScuYBDNLTPxHikaOwpocr3o6yh4W7YM7K4aCSpDKLcBbii0mPcN PIBDuQ9YvFfESF8E00XLns50IMtVeiLSbWlwy28XZR6gSc2cxN4osIby+ cabA2IA65x104JpkCcSEf1OhJyuY0i2cFzptLDwtmA2UOK0m76ASVvtAn Q==; X-IronPort-AV: E=McAfee;i="6200,9189,10236"; a="246316985" X-IronPort-AV: E=Sophos;i="5.88,311,1635231600"; d="scan'208";a="246316985" Received: from fmsmga003.fm.intel.com ([10.253.24.29]) by fmsmga103.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 24 Jan 2022 09:20:25 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.88,311,1635231600"; d="scan'208";a="617320047" Received: from black.fi.intel.com ([10.237.72.28]) by FMSMGA003.fm.intel.com with ESMTP; 24 Jan 2022 09:20:22 -0800 Received: by black.fi.intel.com (Postfix, from userid 1003) id 97045178; Mon, 24 Jan 2022 19:20:35 +0200 (EET) From: Andy Shevchenko To: Andy Shevchenko , Andreas Kemnade , linux-arm-msm@vger.kernel.org, linux-iio@vger.kernel.org, linux-kernel@vger.kernel.org Cc: Andy Gross , Bjorn Andersson , Jonathan Cameron , Lars-Peter Clausen , Peter Rosin Subject: [PATCH v3 1/6] math.h: Introduce data types for fractional numbers Date: Mon, 24 Jan 2022 19:20:27 +0200 Message-Id: <20220124172032.87893-1-andriy.shevchenko@linux.intel.com> X-Mailer: git-send-email 2.34.1 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org Introduce a macro to produce data types like struct TYPE_fract { __TYPE numerator; __TYPE denominator; }; to be used in the code wherever it's needed. In the following changes convert some users to it. Signed-off-by: Andy Shevchenko --- May be pulled via IIO tree. v3: no changes v2: no changes include/linux/math.h | 12 ++++++++++++ 1 file changed, 12 insertions(+) diff --git a/include/linux/math.h b/include/linux/math.h index 53674a327e39..439b8f0b9ebd 100644 --- a/include/linux/math.h +++ b/include/linux/math.h @@ -2,6 +2,7 @@ #ifndef _LINUX_MATH_H #define _LINUX_MATH_H +#include #include #include @@ -106,6 +107,17 @@ } \ ) +#define __STRUCT_FRACT(type) \ +struct type##_fract { \ + __##type numerator; \ + __##type denominator; \ +}; +__STRUCT_FRACT(s16) +__STRUCT_FRACT(u16) +__STRUCT_FRACT(s32) +__STRUCT_FRACT(u32) +#undef __STRUCT_FRACT + /* * Multiplies an integer by a fraction, while avoiding unnecessary * overflow or loss of precision.