From owner-freebsd-wireless@FreeBSD.ORG Thu Dec 1 00:58:25 2011 Return-Path: Delivered-To: freebsd-wireless@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 765F4106564A; Thu, 1 Dec 2011 00:58:25 +0000 (UTC) (envelope-from mozolevsky@gmail.com) Received: from mail-gy0-f182.google.com (mail-gy0-f182.google.com [209.85.160.182]) by mx1.freebsd.org (Postfix) with ESMTP id 21ECA8FC08; Thu, 1 Dec 2011 00:58:24 +0000 (UTC) Received: by ghbg20 with SMTP id g20so1979055ghb.13 for ; Wed, 30 Nov 2011 16:58:24 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=mime-version:in-reply-to:references:from:date:message-id:subject:to :cc:content-type; bh=IIww6uW8CBrEHjkbCZgzWFf5W721aCuIo5tN+uxEmSg=; b=WrLMsSEAQXL5Azd1dIVxrnD43hA9fdfkOBaM1tPEf5L1LArHQDaR/FS4dyWeNM4Osb E8djLb+XXhtrsS/orCtFSipGr6X5wgwpcLJWkXSG2qSOthhK4tfywdc5cqHEWMd1KW1x O5zfvxtx8bI/JlJwtgHQhduDRUfEfokc09zfo= Received: by 10.68.25.170 with SMTP id d10mr284902pbg.7.1322701104079; Wed, 30 Nov 2011 16:58:24 -0800 (PST) MIME-Version: 1.0 Received: by 10.68.48.5 with HTTP; Wed, 30 Nov 2011 16:57:43 -0800 (PST) In-Reply-To: <20111201003938.GA52503@freebsd.org> References: <20111130224422.GA36424@freebsd.org> <20111201000243.GB44877@freebsd.org> <20111201001158.GA48051@freebsd.org> <20111201003938.GA52503@freebsd.org> From: Igor Mozolevsky Date: Thu, 1 Dec 2011 00:57:43 +0000 Message-ID: To: Alexander Best Content-Type: text/plain; charset=UTF-8 Cc: freebsd-wireless@freebsd.org Subject: Re: comparing floating points via "==" or "!=" X-BeenThere: freebsd-wireless@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: "Discussions of 802.11 stack, tools device driver development." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 01 Dec 2011 00:58:25 -0000 On 1 December 2011 00:39, Alexander Best wrote: > so wrapping fabs(3) inside a macro, like in the following example might work. so long as you know that fabs(3) takes a double and you never need to down-cast from a long double :-) Cheers, -- Igor