[#64703] Add `Hash#fetch_at` (issue #10017) — Wojtek Mach <wojtek@...>
Hey guys
1 message
2014/09/01
[#64711] [ruby-trunk - Bug #10193] [Closed] TestIO#test_readpartial_locktmp fails randomly — nobu@...
Issue #10193 has been updated by Nobuyoshi Nakada.
3 messages
2014/09/02
[#64744] [ruby-trunk - Bug #10202] [Open] TestBenchmark#test_realtime_output breaks on ARM — v.ondruch@...
Issue #10202 has been reported by Vit Ondruch.
3 messages
2014/09/03
[#64823] documenting constants — Xavier Noria <fxn@...>
I am writing a Rails guide about constant autoloading in Ruby on
5 messages
2014/09/07
[#64838] [ruby-trunk - Bug #10212] [Open] MRI is not for lambda calculus — ko1@...
Issue #10212 has been reported by Koichi Sasada.
6 messages
2014/09/08
[#64858] Re: [ruby-trunk - Bug #10212] [Open] MRI is not for lambda calculus
— Eric Wong <normalperson@...>
2014/09/08
rb_env_t may use a flexible array, helps a little even on my busy system:
[#64871] Re: [ruby-trunk - Bug #10212] [Open] MRI is not for lambda calculus
— SASADA Koichi <ko1@...>
2014/09/08
(2014/09/08 19:48), Eric Wong wrote:
[#64972] [ruby-trunk - Bug #10231] [Open] Process.detach(pid) defines new singleton classes every call — headius@...
Issue #10231 has been reported by Charles Nutter.
3 messages
2014/09/11
[#64980] [ruby-trunk - Bug #10212] MRI is not for lambda calculus — ko1@...
Issue #10212 has been updated by Koichi Sasada.
4 messages
2014/09/12
[#65142] [ruby-trunk - Feature #10267] [Open] Number of processors — akr@...
Issue #10267 has been reported by Akira Tanaka.
4 messages
2014/09/20
[#65144] Re: [ruby-trunk - Feature #10267] [Open] Number of processors
— Eric Wong <normalperson@...>
2014/09/20
akr@fsij.org wrote:
[#65210] [ruby-trunk - misc #10278] [Assigned] [RFC] st.c: use ccan linked list — nobu@...
Issue #10278 has been updated by Nobuyoshi Nakada.
3 messages
2014/09/22
[ruby-core:65101] [ruby-trunk - Feature #10255] [Open] Math.log: check domain of base argument
From:
mail@...
Date:
2014-09-18 05:58:48 UTC
List:
ruby-core #65101
Issue #10255 has been reported by gogo tanaka. ---------------------------------------- Feature #10255: Math.log: check domain of base argument https://bugs.ruby-lang.org/issues/10255 * Author: gogo tanaka * Status: Open * Priority: Normal * Assignee: * Category: math * Target version: ---------------------------------------- I suppose Math.log with base 0 or 1 is undefinable or has no meaning, so I think it should be raise `Math::DomainError` It is helpful to prevent unnecessary concern or misunderstand. Yes I know there are many controversial issue about that, specially treating Math.log(0.0, 0.0), Math.log(1.0, 0.0) and Math.log(1.0, 1.0). Even if there are some reason it had better return value, I suppose `Math.log(2.0,1.0)` should not be `Infinity` and `Math.log(1.0, 0.0)` should not be `-0.0`. In terms of `raises Math::DomainError instead of returning NaN if the base is less than 0` at the (https://bugs.ruby-lang.org/issues/9797) , this PATCH make sense. But please feel free to point out my unsatisfactory points. (Actually this is first time to write c-lang thoroughly) Thank you. gogo. Before ``` # For all 0 <= n < 1 Math.log(n, 1.0) => -Infinity Math.log(1.0, 1.0) => NaN # For all n > 1 Math.log(n, 1.0) => Infinity Math.log(0.0,0.0) => NaN # For all 0 < n < 1 Math.log(n, 0.0) => 0.0 # For all n >= 1 Math.log(n, 0.0) => - 0.0 ``` After ``` # For all n >= 0. Actually for all n <- R (a real number) because of checking domain of first argument Math.log(n, 1.0) Math::DomainError: Numerical argument is out of domain - “log” Math.log(n, 0.0) Math::DomainError: Numerical argument is out of domain - “log” ``` ---Files-------------------------------- test_math.rb_ Add tests for Math.log.PATCH (1.06 KB) NEWS_ Update for Math.log.PATCH (564 Bytes) math.c_ Math.log with base 0 or 1 should raise DomainError.PATCH (502 Bytes) -- https://bugs.ruby-lang.org/