From owner-freebsd-numerics@FreeBSD.ORG Sun Aug 12 23:02:09 2012 Return-Path: Delivered-To: freebsd-numerics@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 2D56F1065674 for ; Sun, 12 Aug 2012 23:02:09 +0000 (UTC) (envelope-from peter@rulingia.com) Received: from vps.rulingia.com (host-122-100-2-194.octopus.com.au [122.100.2.194]) by mx1.freebsd.org (Postfix) with ESMTP id B52EE8FC16 for ; Sun, 12 Aug 2012 23:02:08 +0000 (UTC) Received: from server.rulingia.com (c220-239-249-137.belrs5.nsw.optusnet.com.au [220.239.249.137]) by vps.rulingia.com (8.14.5/8.14.5) with ESMTP id q7CN28fY075596 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=OK) for ; Mon, 13 Aug 2012 09:02:08 +1000 (EST) (envelope-from peter@rulingia.com) X-Bogosity: Ham, spamicity=0.000000 Received: from server.rulingia.com (localhost.rulingia.com [127.0.0.1]) by server.rulingia.com (8.14.5/8.14.5) with ESMTP id q7CN22CC021104 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO) for ; Mon, 13 Aug 2012 09:02:02 +1000 (EST) (envelope-from peter@server.rulingia.com) Received: (from peter@localhost) by server.rulingia.com (8.14.5/8.14.5/Submit) id q7CN22uN021103 for freebsd-numerics@freebsd.org; Mon, 13 Aug 2012 09:02:02 +1000 (EST) (envelope-from peter) Resent-From: Peter Jeremy Resent-Date: Mon, 13 Aug 2012 09:02:02 +1000 Resent-Message-ID: <20120812230202.GZ20453@server.rulingia.com> Resent-To: freebsd-numerics@freebsd.org Received: from vps.rulingia.com (host-122-100-2-194.octopus.com.au [122.100.2.194]) by server.rulingia.com (8.14.5/8.14.5) with ESMTP id q6NEbFXr030706 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=OK) for ; Tue, 24 Jul 2012 00:37:16 +1000 (EST) (envelope-from stephen@missouri.edu) Received: from wilberforce.math.missouri.edu (wilberforce.math.missouri.edu [128.206.184.213]) by vps.rulingia.com (8.14.5/8.14.5) with ESMTP id q6NEbCIP012562 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO) for ; Tue, 24 Jul 2012 00:37:14 +1000 (EST) (envelope-from stephen@missouri.edu) Received: from [127.0.0.1] (wilberforce.math.missouri.edu [128.206.184.213]) by wilberforce.math.missouri.edu (8.14.5/8.14.5) with ESMTP id q6NEaoEF046369; Mon, 23 Jul 2012 09:36:51 -0500 (CDT) (envelope-from stephen@missouri.edu) Message-ID: <500D6182.8010003@missouri.edu> From: Stephen Montgomery-Smith Mail-Followup-To: freebsd-numerics@freebsd.org User-Agent: Mozilla/5.0 (X11; Linux i686; rv:14.0) Gecko/20120714 Thunderbird/14.0 MIME-Version: 1.0 To: Bruce Evans References: <5004A5C7.1040405@missouri.edu> <5004DEA9.1050001@missouri.edu> <20120717040118.GA86840@troutmask.apl.washington.edu> <20120717042125.GF66913@server.rulingia.com> <20120717043848.GB87001@troutmask.apl.washington.edu> <20120717225328.GA86902@server.rulingia.com> <20120717232740.GA95026@troutmask.apl.washington.edu> <20120718001337.GA87817@server.rulingia.com> <20120718123627.D1575@besplex.bde.org> <20120722121219.GC73662@server.rulingia.com> <20120722220031.GA7791@server.rulingia.com> <20120723141319.P1189@besplex.bde.org> <500CD98E.9080103@missouri.edu> In-Reply-To: <500CD98E.9080103@missouri.edu> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Cc: Diane Bruce , John Baldwin , David Chisnall , Bruce Evans , Steve Kargl , David Schultz , Peter Jeremy , Warner Losh Subject: Re: Use of C99 extra long double math functions after r236148 X-BeenThere: freebsd-numerics@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: "Discussions of high quality implementation of libm functions." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Date: Sun, 12 Aug 2012 23:02:09 -0000 X-Original-Date: Mon, 23 Jul 2012 09:36:50 -0500 X-List-Received-Date: Sun, 12 Aug 2012 23:02:09 -0000 On 07/22/2012 11:56 PM, Stephen Montgomery-Smith wrote: > This is the work I have done to produce casinh, casin, cacos and cacosh. > The latter two took me a lot more time than I expected. It took me a > lot of time to try to find the correct branches. > > Once I have cacos, cacosh turns out to be much easier than I thought: double complex cacosh(double complex z) { complex double w; w = cacos(z); if (signbit(cimag(w)) == 0) return cpack(cimag(w),-creal(w)); else return cpack(-cimag(w),creal(w)); }