Chronology Current Month Current Thread Current Date
[Year List] [Month List (current year)] [Date Index] [Thread Index] [Thread Prev] [Thread Next] [Date Prev] [Date Next]

Re: [Phys-L] I need big numbers crunching

I find Mathematica invaluable for calculations involving arbitrarily large precision. There have been times when I have needed more than the length of extended (128-bit) precision. While writing one's own arithmetic functions is not too bad, it is a chore.

I have been using Mathematica for nearly twenty years and recommend it without hesitation. It is an essential tool in my research.

The student version is less expensive and has some limited functionality but I suspect it is worth investigating.

Best wishes,
Jim
--
James J. Diamond, Ph.D.
Professor of Chemistry
Linfield College
McMinnville, OR

Sent from my iPad

On Mar 22, 2014, at 3:14 PM, Bernard Cleyet <bernard@cleyet.org> wrote:


On 2014, Mar 22, , at 13:22, Richard Tarara <rtarara@saintmarys.edu> wrote:

True Basic (now only for Windows) is actually a fast, compiled language that handles numbers quite well with all numerical variables being handled as 4 byte words. If that is sufficient, the Bronze version is very inexpensive and dead simple to use. I also recommend this as a good multi-level teaching/learning language since you can start with middle-school level programs but using the Silver or Gold versions and the supplied libraries get reasonably sophisticated. It is what I use for all my work.

http://www.truebasic.com/

rwt


I use TrueBasic It’s very slo because the bottle neck is writing the output to a file on my ~ 7 year old PwrBk (1.67 GHz clock, one CPU)
No noticeable improvement in compiling because of the bottle neck. Typical runs are w/ a STEP (loop) of 40k During which I enjoy coffee.

I’m numerically modeling a pendulum driven quasi-electromagnetically with quadratic dissipation. I intend to describe it in an article for the Horological Science newsletter.

It required a day of trials to apply the drive symmetrically about the equilibrium position for a short time. (incipient Alzheimer’s)

I keep the old (I’ve had two in-between my present one year old one) just for True Basic — Chipmunk appears too different.


bc