Date: Fri, 21 Sep 2012 14:25:08 -0500 From: Stephen Montgomery-Smith <stephen@missouri.edu> To: Bruce Evans <brde@optusnet.com.au> Cc: freebsd-numerics@FreeBSD.org Subject: Re: Complex arg-trig functions Message-ID: <505CBF14.70908@missouri.edu> In-Reply-To: <20120922042112.E3044@besplex.bde.org> References: <5017111E.6060003@missouri.edu> <50526050.2070303@missouri.edu> <20120914212403.H1983@besplex.bde.org> <50538E28.6050400@missouri.edu> <20120915231032.C2669@besplex.bde.org> <50548E15.3010405@missouri.edu> <5054C027.2040008@missouri.edu> <5054C200.7090307@missouri.edu> <20120916041132.D6344@besplex.bde.org> <50553424.2080902@missouri.edu> <20120916134730.Y957@besplex.bde.org> <5055ECA8.2080008@missouri.edu> <20120917022614.R2943@besplex.bde.org> <50562213.9020400@missouri.edu> <20120917060116.G3825@besplex.bde.org> <50563C57.60806@missouri.edu> <20120918012459.V5094@besplex.bde.org> <5057A932.3000603@missouri.edu> <5057F24B.7020605@missouri.edu> <20120918162105.U991@besplex.bde.org> <20120918232850.N2144@besplex.bde.org> <20120919010613.T2493@besplex.bde.org> <505BD9B4.8020801@missouri.edu> <20120921172402.W945@besplex.bde.org> <20120921212525.W1732@besplex.bde.org> <505C7490.90600@missouri.edu> <20120922042112.E3044@besplex.bde.org>
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On 09/21/2012 02:05 PM, Bruce Evans wrote: > On Fri, 21 Sep 2012, Stephen Montgomery-Smith wrote: > - decide whether my old change to remove unnecessary accuracy for the > case where ax == 1, ay < FLT_EPSILON in catanh() is correct (you > didn't accept it, and maybe other accuracy changes make it extra > accuracy more interesting). Or maybe I missed it. I did put in the pio2_hi etc stuff in before this email telling me to hold off. I assume you still want pio2_hi etc stuff in catanh. There is it still m_pi_2. I was thinking poi2_hi + (tiny + pio2_lo) or maybe declaring pio2_lo as volatile and using pio2_hi + pio2_lo This last week I was very busy and I had to put this project off a while. But now I think things are slowing down again.
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