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36530
2011 Aug 23
3
Bug or feature? sum(c(a, b, c)) != (a + b + c)
Greetings all,
I'm porting an algorithm from MATLAB to R, and noticed some minor
discrepancies in small decimal values using rowSums and colSums which
are exacerbated after heavy iteration and log space transformation.
This was rather perplexing as both programs claimed and appeared to use
the IEEE 754 standard for floating point arithmetic (confirmed with
manual basic operations).