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how to limit digits?

• To: mathgroup at smc.vnet.net
• Subject: [mg31433] how to limit digits?
• From: Paolo Bientinesi <pauldj at cs.utexas.edu>
• Date: Sat, 3 Nov 2001 18:25:11 -0500 (EST)
• Organization: University of Texas at Austin
• Sender: owner-wri-mathgroup at wolfram.com

Hello,
how can I set Mathematica arithmetic to use a limited number (3 or 5) 
of decimal digits?

I tried $MaxPrecision=$MinPrecision=3 

but for expressions like .3 + .1019 I still get the right answer
rather than the expected .401 or .402 (truncating or rounding).

thanks
--
PaulDj

pauldj at cs.utexas.edu                         bientin at imc.pi.cnr.it