[#103241] [Ruby master Bug#17777] 2.6.7 fails to build on macOS: implicit declaration of function 'rb_native_mutex_destroy' is invalid in C99 — eregontp@...
Issue #17777 has been reported by Eregon (Benoit Daloze).
17 messages
2021/04/05
[#103305] [Ruby master Feature#17785] Allow named parameters to be keywords — marcandre-ruby-core@...
Issue #17785 has been reported by marcandre (Marc-Andre Lafortune).
21 messages
2021/04/08
[#103342] [Ruby master Feature#17790] Have a way to clear a String without resetting its capacity — jean.boussier@...
Issue #17790 has been reported by byroot (Jean Boussier).
14 messages
2021/04/09
[#103388] [ANN] Multi-factor Authentication of bugs.ruby-lang.org — SHIBATA Hiroshi <hsbt@...>
Hello,
5 messages
2021/04/12
[#103414] Re: [ANN] Multi-factor Authentication of bugs.ruby-lang.org
— Martin J. Dürst <duerst@...>
2021/04/13
Is there a way to use this multi-factor authentication for (like me)
[#103547] List of CI sites to check — Martin J. Dürst <duerst@...>
Hello everybody,
4 messages
2021/04/22
[#103596] [Ruby master Feature#17830] Add Integer#previous and Integer#prev — rafasoaresms@...
Issue #17830 has been reported by rafasoares (Rafael Soares).
9 messages
2021/04/26
[ruby-core:103456] [Ruby master Bug#17804] Math.cbrt(0.0) returns NaN
From:
xtkoba+ruby@...
Date:
2021-04-15 01:34:23 UTC
List:
ruby-core #103456
Issue #17804 has been updated by xtkoba (Tee KOBAYASHI).
FWIW, that code was introduced by commit commit:c995315153f7403636ec0d6119b7885668b32039.
----------------------------------------
Bug #17804: Math.cbrt(0.0) returns NaN
https://bugs.ruby-lang.org/issues/17804#change-91551
* Author: chasonr (Ray Chason)
* Status: Open
* Priority: Normal
* ruby -v: ruby 3.0.1p64 (2021-04-05 revision 0fb782ee38) [x86_64-linux]
* Backport: 2.6: UNKNOWN, 2.7: UNKNOWN, 3.0: UNKNOWN
----------------------------------------
Math.cbrt(0.0) returns NaN. It should return 0.0.
From reading the implementation, I expect this bug to happen only if glibc is in use. The failing section reads:
#if defined __GLIBC__
if (isfinite(r)) {
r = (2.0 * r + (f / r / r)) / 3.0;
}
#endif
and this produces a NaN when f and r are both 0.
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