round: 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.

Version: 0.21-0.2
Imports: stats
Suggests: grDevices, graphics, Matrix, lattice, gmp, knitr, rmarkdown
Published: 2024-01-10
DOI: 10.32614/CRAN.package.round
Author: Martin Maechler ORCID iD [aut, cre], R-core [ctb] ("r1.C" only)
Maintainer: Martin Maechler <maechler at>
License: AGPL (≥ 3) | file LICENSE
NeedsCompilation: yes
Materials: README NEWS
CRAN checks: round results


Reference manual: round.pdf
Vignettes: Rounding to Decimal Digits in Binary
Exact Decimal Rounding via Rationals


Package source: round_0.21-0.2.tar.gz
Windows binaries: r-devel:, r-release:, r-oldrel:
macOS binaries: r-release (arm64): round_0.21-0.2.tgz, r-oldrel (arm64): round_0.21-0.2.tgz, r-release (x86_64): round_0.21-0.2.tgz, r-oldrel (x86_64): round_0.21-0.2.tgz
Old sources: round archive

Reverse dependencies:

Reverse suggests: gmp


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