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From: "mtk.manpages at gmail dot com" <sourceware-bugzilla@sourceware.org>
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Subject: [Bug math/13932] dbl-64 pow unexpectedly slow for some inputs
Date: Sat, 23 May 2020 19:32:29 +0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=3D13932

Michael Kerrisk <mtk.manpages at gmail dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |mtk.manpages at gmail dot =
com

--- Comment #25 from Michael Kerrisk <mtk.manpages at gmail dot com> ---
Fix documented for man-pages-5.07.

diff --git a/man3/pow.3 b/man3/pow.3
index 2f8b340bb..91b9a9562 100644
--- a/man3/pow.3
+++ b/man3/pow.3
@@ -329,9 +329,10 @@ The variant returning
 also conforms to
 SVr4, 4.3BSD, C89.
 .SH BUGS
-On 64-bits,
+Before glibc 2.28,
 .\"
 .\" https://sourceware.org/bugzilla/show_bug.cgi?id=3D13932
+on some architectures (e.g., x86-64)
 .BR pow ()
 may be more than 10,000 times slower for some (rare) inputs
 than for other nearby inputs.
@@ -341,6 +342,9 @@ and not
 .BR powf ()
 nor
 .BR powl ().
+This problem was fixed
+.\" commit c3d466cba1692708a19c6ff829d0386c83a0c6e5
+in glibc 2.28.
 .PP
 In glibc 2.9 and earlier,
 .\"

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