HTTP/2 200 x-amz-id-2: urkHD5F1YiY4Bpd4YbgEzP/ZQ04bU6zpwzj6sZCx4/MI+b9QBALfwPgjOivlRyJrIPA+U291W+E= x-amz-request-id: 1Y07SZNPG0PG0XT0 last-modified: Mon, 05 May 2025 09:51:17 GMT etag: "d2cf6a8a96b64697614522f990d1739a" x-amz-server-side-encryption: AES256 server: AmazonS3 content-encoding: gzip via: 1.1 varnish, 1.1 varnish content-type: text/plain; charset=utf-8 accept-ranges: bytes age: 0 date: Fri, 25 Jul 2025 20:03:48 GMT x-served-by: cache-tyo11967-TYO, cache-bom-vanm7210026-BOM x-cache: MISS, MISS x-cache-hits: 0, 0 x-timer: S1753473828.690149,VS0,VE364 vary: Accept-Encoding content-length: 775 From: "watson1978 (Shizuo Fujita) via ruby-core" Date: 2025-05-05T09:40:44+00:00 Subject: [ruby-core:121829] [Ruby Feature#21308] Replacing the Float#to_s (dtoa.c) implementation with a modern algorithm Issue #21308 has been reported by watson1978 (Shizuo Fujita). ---------------------------------------- Feature #21308: Replacing the Float#to_s (dtoa.c) implementation with a modern algorithm https://bugs.ruby-lang.org/issues/21308 * Author: watson1978 (Shizuo Fujita) * Status: Open ---------------------------------------- This is a feature request to replace Ruby's `Float#to_s` implementation with a modern high-performance float-to-string conversion algorithm such as Grisu. Currently, `Float#to_s` in Ruby uses the BSD-derived implementation in [missing/dtoa.c](https://github.com/ruby/ruby/blob/master/missing/dtoa.c). Meanwhile, `json` gem has adopted a Grisu-based implementation in [ruby/json#768](https://github.com/ruby/json/pull/768), it has been improve the performance of float-to-string conversion dramatically. It appears to have brought about a 10 times improvement in performance. However, the improvement is limited to the `json` gem. If we can use the same implementation in `Float#to_s`, it will introduce the improvement in all float-to-string conversion cases. (In additional, it would be better if an API could be added that could be called directly from the C extension library, it will reduce the overhead of the call.) -- https://bugs.ruby-lang.org/ ______________________________________________ ruby-core mailing list -- ruby-core@ml.ruby-lang.org To unsubscribe send an email to ruby-core-leave@ml.ruby-lang.org ruby-core info -- https://ml.ruby-lang.org/mailman3/lists/ruby-core.ml.ruby-lang.org/