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Possible bug in Floor function?

  • To: mathgroup at smc.vnet.net
  • Subject: [mg132345] Possible bug in Floor function?
  • From: psycho_dad <s.nesseris at gmail.com>
  • Date: Sat, 15 Feb 2014 04:02:14 -0500 (EST)
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  • Delivered-to: l-mathgroup@wolfram.com
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Hi,

I think I may have stumbled upon a possible bug in Floor. Evaluating the following gives the correct result: 

Floor[Log[10, 100.]]
2

Evaluating it with a replacement and //N gives a message and the wrong result:

Floor[Log[10, x]] /. x -> 100 // N

Floor::meprec: Internal precision limit $MaxExtraPrecision = 50.` reached while evaluating Floor[Log[100]/Log[10]]. >>

1

I'm on Math 9.0 + Win7, but Math 8 gives the same (wrong) result as well. 

Cheers



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