Received: from mout.gmx.net (mout.gmx.net [212.227.15.18]) by h1439878.stratoserver.net (8.14.2/8.14.2/Debian-2build1) with ESMTP id s6ADhYPt029769 for ; Thu, 10 Jul 2014 15:43:35 +0200 Received: from relay2.uni-heidelberg.de ([129.206.210.211]) by mx-ha.gmx.net (mxgmx013) with ESMTPS (Nemesis) id 0Mb3Mp-1XKQEO3xYx-00Kl1E for ; Thu, 10 Jul 2014 15:43:28 +0200 Received: from listserv.uni-heidelberg.de (listserv.uni-heidelberg.de [129.206.100.94]) by relay2.uni-heidelberg.de (8.13.8/8.13.8) with ESMTP id s6ADeppV026991 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO); Thu, 10 Jul 2014 15:40:52 +0200 Received: from listserv.uni-heidelberg.de (listserv.uni-heidelberg.de [127.0.0.1]) by listserv.uni-heidelberg.de (8.13.8/8.13.8) with ESMTP id s6ACZ6gt024688; Thu, 10 Jul 2014 15:40:50 +0200 Received: by LISTSERV.UNI-HEIDELBERG.DE (LISTSERV-TCP/IP release 16.0) with spool id 11301126 for LATEX-L@LISTSERV.UNI-HEIDELBERG.DE; Thu, 10 Jul 2014 15:40:50 +0200 Received: from relay.uni-heidelberg.de (relay.uni-heidelberg.de [129.206.100.212]) by listserv.uni-heidelberg.de (8.13.8/8.13.8) with ESMTP id s6ADeokf003869 for ; Thu, 10 Jul 2014 15:40:50 +0200 Received: from mail-qg0-f53.google.com (mail-qg0-f53.google.com [209.85.192.53]) by relay.uni-heidelberg.de (8.14.1/8.14.1) with ESMTP id s6ADeTuY022082 (version=TLSv1/SSLv3 cipher=RC4-SHA bits=128 verify=FAIL) for ; Thu, 10 Jul 2014 15:40:32 +0200 Received: by mail-qg0-f53.google.com with SMTP id i50so7630516qgf.12 for ; Thu, 10 Jul 2014 06:40:29 -0700 (PDT) MIME-Version: 1.0 X-Received: by 10.224.137.9 with SMTP id u9mr83126356qat.24.1404999629056; Thu, 10 Jul 2014 06:40:29 -0700 (PDT) Received: by 10.96.212.1 with HTTP; Thu, 10 Jul 2014 06:40:29 -0700 (PDT) References: <53A12567.90105@clear.net.nz> Content-Type: text/plain; charset=UTF-8 Message-ID: Date: Thu, 10 Jul 2014 09:40:29 -0400 Reply-To: Mailing list for the LaTeX3 project Sender: Mailing list for the LaTeX3 project From: Bruno Le Floch Subject: Re: Bug in l3fp To: LATEX-L@LISTSERV.UNI-HEIDELBERG.DE In-Reply-To: <53A12567.90105@clear.net.nz> Precedence: list List-Help: , List-Unsubscribe: List-Subscribe: List-Owner: List-Archive: Envelope-To: X-GMX-Antispam: 0 (Mail was not recognized as spam); Detail=V3; X-GMX-Antivirus: 0 (no virus found) X-UI-Filterresults: notjunk:1;V01:K0:jFlDwMPGk1c=:5Yxd1dr1898pDlb4Br+y6pxJcc HMCgNO2+WVSQT9YPralgGuN5zfXuJ3L+bPdC01nmB+u274dHexhnYHZ0ony6KH6iQ2eCVwnt9 qWBFxnQFEjSNdShtQGzGQgzRL2pAyYDh8SWIKyIlHGElRLnisMZDcWSyGWtjG1nm9beF5SB36 LxpSftKR1wUEmKKakphg1J8uTSjz9oYeI5GQa3/hXtQqtl2X2FZPX632abuUrTxJLCZXle6nU KnSu8zI8w8BCv+Px2PwpYD7dUlfBxwjn2q44L7KXcfxvCw2Dx40gVXgGp6uXsXkC6zE02xcwp 7FbYLlKJIF67tPZJwOqx6h09qYWcinwfZ9oAU602sOa3GhwwHlcVH3KNioBB5VFRhJAuwST7H qN3LlbdoT9gGmgOWdUKrEDVzrcKdaJ0NMWPsKxql2nm6SEG7iBoApydfcue/mxJ0JeYuO84k2 qP9E9atFVTxXnRmBdut80XE4YHmcnwf/R+o/IBeR+3Madlyp4ORBc1RUQj9kqctvxB6kgVG3L KB1xlAskLf4WfLLdLCGANKla7HJyz5GV++yygyX+1+UmH/Uan7qw9BDrXLJ1OReYCVlHgBjjM 6OM9VL0oiQfMBlCn8PIgnoifTK9Jqq5G4q4CDX8eZmI8bCwLjVV7dqCCogB5kHwPTZDEw0dXd on5BdKOZn58H7hCxw8VKsPrS+zxIS6rZUyPisJk/9K8TTW71bPaqGYnXbO7zBM7EiaJSLcRuc 2bahqoJQbvtAkhUtYuy3DOqbGr2+FXmn0aIah/2VfAe3GiefeE2Bmnq/JMyGDwDcCNIIEAIKq OaTelKDFN5NiHBDyWcQz+GWYPvp/Re4uXGj9bcBOQ9tq140hA2OBqQsSZP7Zxk5p7nx5ZruRO aUP06+PcAwPbi8WG5woS0tZl/syUip4rrDxSYj+cF6FepAFfKozOTK1YQPaNsaFZRKRuA3xZ1 CoINjteVSJ2yv3gsemVI5C2slmkXZ8cEoMziRNs8LRIr5lLNYOm5cYXYr8tAUr8lpYa5Sv5Zf NwxbkMPJm2IhAyP7Gb5R/th87sLUYFZuWslri51bxOmfpy1s4vtB4Cltp9m9UauM7YBtI/y0I LefTjedbIf5dAR/D2jsEX+1srXvB4igydwbOKPiKilpGTQdxCJYWLlHkGKoI+yJZnHbbjyZDh UzwhTakIyohCAlXbnEpaYCwhCesCXPBi/0vF/OHWxm8p4HKNy3Bsy8dlws6tYjGfY5QLDa0K8 s6+eJvezhDEHMCqLCVLRPg8Hn3cx5oM9wMBDhmdICxp2HjqHMdJoAlS+ZlZ0ASZcpOfulASNU YD6/u7ttzner4dQ8ftwV5/vmBj9JiVvlzE78G/kqZo/zUij6hbwm/M9hnwIP48V6o6xVINlaa lHE1Xy6rFJ7hkHFILbnkdn/ZY7s6oBlFxpTvjT9iMq7pfJl2COW5/SVTzijh/noTScjMFVVMN c3vwbjip5F0EZ76KkNlsE81kehQFcN8+TisH5/3o0zsiaHptx1PhRE8hfQcNibWvRupFttH0H XVls4mCfpYszvK3fbrUaRQRe83CsLGx8zmsYyq219zF9+k1w8RIKawQpxa5FUKb80dywA8ljA Mh5WrKyHED6/YYlKzV1JP1g0FBB0h7l3 X-UI-Loop:V01:wpn4+NpVh7Y=:Imx1DpM+mYEVTURUN0FB90CyLD3dpTfXZQWd2T6EdsU= Status: R X-Status: X-Keywords: X-UID: 7537 Hello Andrew, Very clearly a bug. Comes from a bug in the log function (well, the more precise internal version that is used when computing powers) in the range [1.00099009, 1.0009901) it seems, and probably some other ranges. I'll investigate. Also, I'll likely answer at some point in the next couple of days to your juxtaposition email. Sorry for the delay. Regards, Bruno On 6/18/14, aparsloe wrote: > \fp_eval:n { exp(1) - (1+1/1009)^{1009} } -> 0.001346 > \fp_eval:n { exp(1) - (1+1/1010)^{1010} } -> 0.001613 > \fp_eval:n { exp(1) - (1+1/1011)^{1011} } -> 0.001343