From: Paul Zimmermann <Paul.Zimmermann@inria.fr>
To: newlib@sourceware.org
Subject: regression in Newlib 4.2.0 (lgammaf)
Date: Sat, 05 Feb 2022 07:38:16 +0100 [thread overview]
Message-ID: <mw35kxbyxz.fsf@tomate.loria.fr> (raw)
Hi,
a third regression in Newlib 4.2.0 for single precision:
Checking lgamma with newlib-4.2.0.20211231
MPFR library: 4.1.0
MPFR header: 4.1.0 (based on 4.1.0)
Checking function mylgammaf with MPFR_RNDN
libm wrong by up to 8.93e+43 ulp(s) for x=-0x1p-70
mylgamma gives inf
mpfr_mylgamma gives 0x1.842994p+5
The largest error for lgammaf in Newlib 4.1.0 was 7.50e6 ulps
(for x=-0x1.3a7fcap+1).
Paul
next reply other threads:[~2022-02-05 6:38 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-02-05 6:38 Paul Zimmermann [this message]
2022-02-09 16:28 ` [PATCH 1/2] Improve lgammaf range for very small cases Andoni Arregi
2022-02-10 14:58 ` Corinna Vinschen
2022-02-10 16:07 ` [PATCH 0/2] Fix lgammaf and lgamma for small ranges and in [2, 3[ Andoni Arregi
2022-02-10 16:10 ` [PATCH 1/2] Improve lgammaf range for very small cases Andoni Arregi
2022-02-10 16:21 ` Paul Zimmermann
2022-02-10 16:12 ` [PATCH 2/2] Add a missing default case in lgamma Andoni Arregi
2022-02-10 17:29 ` Paul Zimmermann
2022-02-11 11:14 ` Andoni Arregi
2022-02-10 16:16 ` [PATCH 1/2] Improve lgammaf range for very small cases Andoni Arregi
2022-02-11 11:19 ` Andoni Arregi
2022-02-09 16:30 ` [PATCH 2/2] Add a missing default case in lgamma Andoni Arregi
2022-02-09 16:49 ` regression in Newlib 4.2.0 (lgammaf) Andoni Arregi
2022-02-11 11:16 ` [PATCH] Improve lgammaf range for very small cases Andoni Arregi
2022-02-14 13:46 ` Corinna Vinschen
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