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Path: ...!eternal-september.org!feeder3.eternal-september.org!news.eternal-september.org!.POSTED!not-for-mail From: Keith Thompson <Keith.S.Thompson+u@gmail.com> Newsgroups: comp.lang.c++ Subject: Re: constexpr is really very smart! Date: Tue, 17 Dec 2024 12:20:47 -0800 Organization: None to speak of Lines: 17 Message-ID: <87h6726oyo.fsf@nosuchdomain.example.com> References: <vjndub$2glcu$1@paganini.bofh.team> MIME-Version: 1.0 Content-Type: text/plain Injection-Date: Tue, 17 Dec 2024 21:20:47 +0100 (CET) Injection-Info: dont-email.me; posting-host="be6ba1f9d988ebdec25093efcf540bc9"; logging-data="1991943"; mail-complaints-to="abuse@eternal-september.org"; posting-account="U2FsdGVkX1/ffWWPJKXMkimVPdnIBlFN" User-Agent: Gnus/5.13 (Gnus v5.13) Cancel-Lock: sha1:6xgo1nO7mjGrosaa43sPPlg7VlI= sha1:CGkDm+tXjOI31DhTsQmj8Qea3RY= Bytes: 1504 Student Project <student@invalid.invalid> writes: > The constexpr is really very smart because it can speed up algorithms > 1000 times according to Dave, Microsoft retired engineer. He has proved it > by creating this video: > > <https://youtu.be/8-VZoXn8f9U?si=iy1UimoWcaLG31Xi> > > On my computer it took 270 microseconds to calculate fib(35) like in his > example. It was almost instant at the blink of the eyes. Can you post the relevant code? [...] -- Keith Thompson (The_Other_Keith) Keith.S.Thompson+u@gmail.com void Void(void) { Void(); } /* The recursive call of the void */