[R] Underflow warnings?
kjetil.kjernsmo at astro.uio.no
Sun Feb 13 13:09:59 CET 2000
I'm a bit concerned about underflow problems. Such problems typically
occur when two almost equal numbers are subtracted. I was wondering if R
has any mechanisms for warning users about potential problems, or if any
policy has been developed?
To check, I just did:
> 1.0000000000000001 - 1
> 1.000000000000001 - 1
> 1.00000000000001 - 1
I guess many users are unaware of the potential problems caused by
underflow (i.e. garbage becoming significant), so perhaps R should issue
Graduate astronomy-student Problems worthy of attack
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E-mail: kjetikj at astro.uio.no - Piet Hein
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