Can someone explain me this weird behavior in R? Why isn't the first expression evaluated to 57?
> floor(0.57*100)
[1] 56
> floor(0.56*100)
[1] 56
R version 3.4.1
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`sprintf("%.54f",0.57)` is `0.5699999999999999511501869164931...` – thelatemail Oct 19 '17 at 05:02
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@thelatemail 0.57*100 = 57 – kangaroo_cliff Oct 19 '17 at 05:03
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@Headpoint - no, no it doesn't. Not when computing and floating point numbers are involved - see the duplicate question. – thelatemail Oct 19 '17 at 05:04
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@thelatemail I agree it is not quite 57. But certainly close to 57 than 56! – kangaroo_cliff Oct 19 '17 at 05:05
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1@Headpoint - but they're not rounding, they're flooring. Doesn't matter how close it is to 57 if it doesn't quite reach it. – thelatemail Oct 19 '17 at 05:05
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So what is the best way to get 57 out of floor(0.57*100)? ._. – iamdeit Oct 19 '17 at 05:05
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@thelatemail. I see. I was thinking rounding for some reason. – kangaroo_cliff Oct 19 '17 at 05:07