Path: csiph.com!usenet.pasdenom.info!weretis.net!feeder4.news.weretis.net!feeder1.news.weretis.net!news.solani.org!.POSTED!not-for-mail From: Thomas 'PointedEars' Lahn Newsgroups: comp.lang.c,comp.lang.javascript Subject: Re: "i = i|0" Followup-To: comp.lang.javascript Date: Thu, 12 Jun 2014 00:56:58 +0200 Organization: PointedEars Software (PES) Lines: 47 Message-ID: <2078529.Slc7CH7YZo@PointedEars.de> References: <44f393c9-8b85-4da8-8618-6b11dd3954b2@googlegroups.com> <5398CC30.9020706@verizon.net> Reply-To: Thomas 'PointedEars' Lahn Mime-Version: 1.0 Content-Type: text/plain; charset="ISO-8859-1" Content-Transfer-Encoding: 7Bit X-Trace: solani.org 1402527422 7168 eJwFwYkRwDAIA7CVcAruZRzMs/8IkeIjWL8z6LGxVSaydCnxpBLG6ta5mHWAY7DkqHu50w82/RJl (11 Jun 2014 22:57:02 GMT) X-Complaints-To: abuse@news.solani.org NNTP-Posting-Date: Wed, 11 Jun 2014 22:57:02 +0000 (UTC) User-Agent: KNode/4.12.4 X-User-ID: eJwNxMERwDAIA7CV8IFNPE4Tmv1HaPUQU9DpElW8vAbOXtGDN1rZdr5kDmKhgWGSUftuma2g2zVhPesv5Q8SrxNB Face: 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 X-Face: %i>XG-yXR'\"2P/C_aO%~;2o~?g0pPKmbOw^=NT`tprDEf++D.m7"}HW6.#=U:?2GGctkL,f89@H46O$ASoW&?s}.k+&. On 06/11/2014 05:09 PM, Ike Naar wrote: >> On 2014-06-11, Stefan Ram wrote: >>> When they then call the function with non-integer arguments >>> its their fault. (Or they can write a |0 wrapper instead >>> of requiring each and every function to do |0 and thereby >>> possibly slowing down execution and enlarging code size.) >> >> With a decent optimizing compiler, do you think that |0 would >> slow down execution or enlarge code size? > > I'm no JS experts, That much is obvious. > but so far I haven't seen any responses from those who are, Usenet is not a real-time communications medium. Besides, what one sees may very well be different from what someone else sees, due to different feeds (different speeds and Paths), scorefiles, killfiles, and so on. > so I'll throw in my guesses. The reference material is freely available; there is no need to guess. If you are not sure, just refrain from posting. Nobody is being helped by wild guesses from people who have a smattering; you do not have to save the world alone. > It seems reasonable to me that it would - in javascript, |0 doesn't just There is no javascript. [0] > cause the integer value to be unchanged (something a smart compiler > could drop) - it also (and first) causes conversion to a 32-bit integer > type, if necessary. No, it causes conversion to a 64-bit floating-point value that represents a 32-bit integer value. -- PointedEars FAQ: | SVN: Twitter: @PointedEars2 | [0] ES Matrix: Please do not Cc: me. / Bitte keine Kopien per E-Mail.