From 5962501134445692462 X-Google-Thread: f78e5,4ba9dcb1ae436e16,start X-Google-Attributes: gidf78e5,public X-Google-Language: ENGLISH,ASCII-7-bit Path: g2news1.google.com!news2.google.com!news.maxwell.syr.edu!news.alt.net!comp-std-cpp-robomod!not-for-mail From: "Steven T. Hatton" Newsgroups: comp.std.c++ Subject: Pi, Euler Number, and perhaps other 'natural' constants? Date: 26 Jul 2004 16:10:07 GMT Organization: Asii Lines: 22 Approved: Fergus Henderson , moderator of comp.std.c++ Message-ID: <5cydnSisJNo4yJncRVn-sQ@speakeasy.net> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7Bit Return-Path: X-Authentication-Warning: mulga.cs.mu.OZ.AU: fjh set sender to devnull@stump.algebra.com using -f X-Robomod: STUMP, ichudov@algebra.com (Igor Chudov) Delivered-To: std-c++@ucar.edu X-Authentication-Warning: serv1.gc.dca.giganews.com: news set sender to poster@giganews.com using -f NNTP-Posting-Date: Sun, 25 Jul 2004 19:51:48 -0500 User-Agent: KNode/0.7.7 X-Trace: sv3-kMV53PnnFqdkCw/x1oTGTfWNKank0nH9HizsaVQ1m6W48XY4eLN40hDYGe6MB08qPZ2+kDhosEnXPed!EyfuU6IpfDH+UXmmsbqjBr+tgIkNVgt7kU9MDH6QjAzd6OQhshhhqd9lzHdZ4rs9lhtgrqY5SRmd!AReo+AttAcyZjrHHcGc= X-Complaints-To: abuse@speakeasy.net X-DMCA-Complaints-To: abuse@speakeasy.net X-Abuse-and-DMCA-Info: Please be sure to forward a copy of ALL headers X-Abuse-and-DMCA-Info: Otherwise we will be unable to process your complaint properly X-Postfilter: 1.1 X-Spamscanner: mailbox8.ucsd.edu (v1.4 May 20 2004 13:55:33, 0.0/5.0 2.63) X-MailScanner: PASSED (v1.2.8 53448 i6Q0ptCO059304 mailbox8.ucsd.edu) X-Spam-Checker-Version: SpamAssassin 2.60-mulga_r1 (1.212-2003-09-23-exp) on mulga.cs.mu.OZ.AU X-Spam-Level: X-Spam-Status: No, hits=-3.0 required=5.2 tests=AWL,BAYES_00 autolearn=ham version=2.60-mulga_r1 Xref: g2news1.google.com comp.std.c++:1445 I was a bit surprised that the Standard does not specify that the constant Pi be part of an implementation. It seems like an obvious feature to want in a programming language. The Euler Number would also be nice, but not nearly as desirable as Pi. Sure there are questions of how to handle the difference between a float and a double Pi, but I'm (almost) sure that isn't a big obstacle. I've found ways to jump though hoops to get Pi defined by using transcendental functions provided in the Standard Library, but that seems a bit convoluted to me. Is there a reason Pi is missing from C++? -- STH http://www.kdevelop.org http://www.suse.com http://www.mozilla.org --- [ comp.std.c++ is moderated. To submit articles, try just posting with ] [ your news-reader. If that fails, use mailto:std-c++@ncar.ucar.edu ] [ --- Please see the FAQ before posting. --- ] [ FAQ: http://www.jamesd.demon.co.uk/csc/faq.html ]