From: Paul Zimmermann <Paul.Zimmermann@inria.fr>
To: Joseph Myers <josmyers@redhat.com>
Cc: libc-alpha@sourceware.org
Subject: Re: Implement C23 log2p1
Date: Wed, 10 Apr 2024 10:31:31 +0200 [thread overview]
Message-ID: <p9u0v84pzkik.fsf@araignee.loria.fr> (raw)
In-Reply-To: <41a4a6c9-4942-a9be-9459-1aaeb44ffee8@redhat.com> (message from Joseph Myers on Mon, 8 Apr 2024 21:19:23 +0000 (UTC))
Dear Joseph,
I tried your patch on a x86_64, it applies cleanly, everything compiles
cleanly, and I can use the new log2p1 function in both binary32, binary64,
double-extended and binary128.
As for accuracy, here are the largest errors I found for rounding to nearest:
float 0x1.a69b4ap-2 1.88 ulps
double 0x1.a7b725780ff2cp-2 1.87575 ulps
long double 0x5.dda3a1f4c4020ebp-4l 4.04684 ulps
Float128 -0x7.fff3a57fdd2666bcecba33bd89f4p-4 3.34125 ulps
Probably some values in libm-test-ulps should be updated.
Best regards,
Paul
next prev parent reply other threads:[~2024-04-10 8:31 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-04-08 21:19 Joseph Myers
2024-04-10 8:31 ` Paul Zimmermann [this message]
2024-04-10 14:34 ` Joseph Myers
2024-04-10 14:46 ` Paul Zimmermann
2024-04-10 15:00 ` Joseph Myers
2024-04-15 13:41 ` Carlos O'Donell
2024-04-15 13:52 ` Adhemerval Zanella Netto
2024-04-18 13:26 ` Joseph Myers
2024-04-29 13:34 ` Ping " Joseph Myers
2024-04-29 13:51 ` Paul Zimmermann
2024-05-07 21:34 ` Ping^2 " Joseph Myers
2024-05-16 16:47 ` Ping^3 " Joseph Myers
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