Re: Combined Set, SetDelayed

*To*: mathgroup at smc.vnet.net*Subject*: [mg100872] Re: Combined Set, SetDelayed*From*: "Sjoerd C. de Vries" <sjoerd.c.devries at gmail.com>*Date*: Tue, 16 Jun 2009 21:55:10 -0400 (EDT)*References*: <h0vteh$6v2$1@smc.vnet.net> <h12gck$e8s$1@smc.vnet.net>

Well, given that any computer calculation must at least take one clock cycle, and most clocks run at less than 5 GHz, the timing cannot be less than 1/(5*10^9), which is 0.2 * 10^-9 s, i.e. 100000 times slower than the time it took on your computer. Cheers -- Sjoerd On Jun 15, 11:37 am, Helen Read <h... at together.net> wrote: > AES wrote: > > Helen Read <h... at together.net> > > wrote: > > >> 0.811 seconds. The second version, using the function that remembers > >> values, took only 1.87003*10^-15 seconds. > > > The frequency of visible light is around 3*10^14 Hz, so that's around > > one period of a visible light wave. Is there maybe a typo here? > > No, no typo. Not sure what your point is. > > -- > Helen Read > University of Vermont