Re: Math::round not rounding correctly

tye is talking about that:

$ perl -e 'printf "%.10f\n%.30f\n", 3010*1.15, 3010*1.15'
3461.5000000000
3461.499999999999545252649113535881
[download]

So it seems a quick and dirty hack would be to sprintf the number and then round the string? :)

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Re^2: Math::round not rounding correctly (string) by tye (Sage) on Dec 23, 2014 at 20:39 UTC
A better "work-around" to what is arguably "correct" behavior would be: `$l=Math::Round::round("$x"); # Math::Round::round($x) # vs. this` [download] If what you care about is how the rounding compares to the string output for the number, then what you should be rounding is the string output, of course. - tye	[reply] [d/l]
Re^2: Math::round not rounding correctly by bulrush (Scribe) on Dec 23, 2014 at 20:22 UTC
Hmm. Well this seemed to work in this case. I'll test it out. perl -e 'print int(sprintf("%.10f",(3010*1.15))+0.5)."\n"'	[reply]