Round-Trip-Safe Double-Precision Formatting R package zmij version 0.1.0 Converts double-precision floating-point values to decimal strings with the shortest significands needed for round-trip recovery. Uses the 'zmij' algorithm through a vendored 'Rust' implementation. The method is described in Zverovich (2025), "Faster Double-to-String Conversion" <https://vitaut.net/posts/2025/faster-dtoa/>. Provides vectorized formatting, a correctly rounded inverse parser, and explicit handling of missing and non-finite values. Software Depends: R (>= 4.2) Suggests: testthat (>= 3.0.0) Nan Xiao <me@nanx.me> Comprehensive R Archive Network (CRAN) Nan Xiao [aut, cre, cph] (ORCID: <https://orcid.org/0000-0002-0250-5673>), David Tolnay [ctb, cph] (Author of the vendored Rust zmij crate), Victor Zverovich [ctb, cph] (Author of the zmij algorithm and original C++ implementation) MIT + file LICENSE (https://CRAN.R-project.org/package=zmij/LICENSE) 2026-08-04 application/tgz https://CRAN.R-project.org/package=zmij doi:10.32614/CRAN.package.zmij