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Subject: [Bug math/15467] sincos does not set errno on domain error
Date: Tue, 26 May 2020 08:38:49 +0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=3D15467

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

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

--- Comment #4 from Michael Kerrisk <mtk.manpages at gmail dot com> ---
Fix document in man-pages.


diff --git a/man3/sincos.3 b/man3/sincos.3
index b8c3089f8..c299d17b6 100644
--- a/man3/sincos.3
+++ b/man3/sincos.3
@@ -60,9 +60,10 @@ when calling these functions.
 The following errors can occur:
 .TP
 Domain error: \fIx\fP is an infinity
-.\" .I errno
-.\" is set to
-.\" .BR EDOM .
+.I errno
+is set to
+.BR EDOM
+(but see BUGS).
 An invalid floating-point exception
 .RB ( FE_INVALID )
 is raised.
@@ -103,6 +104,13 @@ built-in optimizations, using flags such as:
 cc -O \-lm \-fno\-builtin prog.c
 .EE
 .in
+.SH BUGS
+Before version 2.22, the glibc implementation did not set
+.\" https://www.sourceware.org/bugzilla/show_bug.cgi?id=3D15467
+.I errno
+to
+.B EDOM
+when a domain error occurred.
 .SH SEE ALSO
 .BR cos (3),
 .BR sin (3),

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