Rounding to Decimal Digits

Decimal rounding is non-trivial in binary arithmetic. ISO standard round to even is more rare than typically assumed as most decimal fractions are not exactly representable in binary. Our roundX() versions explore differences between current and potential future versions of round() in R. Further, provides (some partly related) C99 math lib functions not in base R.


Reference manual

It appears you don't have a PDF plugin for this browser. You can click here to download the reference manual.


0.20-0 by Martin Maechler, 10 months ago

Report a bug at

Browse source code at

Authors: Martin Maechler [aut, cre] , R-core [ctb] ("r1.C" only)

Documentation:   PDF Manual  

AGPL (>= 3) | file LICENSE license

Imports stats

Suggests grDevices, graphics, Matrix, lattice, gmp, knitr, rmarkdown

Suggested by gmp.

See at CRAN