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Can I force arbitary precision

• To: mathgroup at smc.vnet.net
• Subject: [mg25572] Can I force arbitary precision
• From: wkuang <wkuang at usc.edu>
• Date: Sun, 8 Oct 2000 00:41:58 -0400 (EDT)
• Organization: University of Southern California
• Sender: owner-wri-mathgroup at wolfram.com

Hi,

I am doing a little numerical calculation on Mathematica. The problem is
that if I input a number as 1.7341421*^-9, mathematica automatically
trim it to machine precision number. Yes, I can force the number as 200
digit precision, but efficiency sacrificed. And I have to try different
precision to make sure that it runs as fast and as accurate. My question
is: can I force an arbitary precision so that I could throw the
precision and accuracy problem to mathematica? thanks

--
Wan Kuang
Electric Engineering - Electrophysics
University of Southern California
Los Angeles, CA 90007