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Date: Sun, 1 Apr 2018 22:42:27 +0200
From: Szabolcs Nagy <>
To: Alba Pompeo <>
Subject: Re: musl libmath (implied algorithm issue)

* Alba Pompeo <> [2018-04-01 10:54:54 -0300]:
> I found a commit elsewhere that implies musl's fma algorithm is wrong.
> You may be interested in investigating.

thanks, it is a wrong result bug in fmaf, copied from freebsd.

near half way cases may get incorrectly rounded under some
circumstances, i didnt try to understand their fix, but
used a minimal change for now.

View attachment "0001-fix-fmaf-wrong-result.patch" of type "text/x-diff" (1420 bytes)

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