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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



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