sin.3: errno is now correctly set to EDOM on a domain error

http://sources.redhat.com/bugzilla/show_bug.cgi?id=6781
was (silently) resolved.

Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>

man3/sin.3

@@ -29,7 +29,8 @@
 .\" Modified 1993-07-24 by Rik Faith (faith@cs.unc.edu)
 .\" Modified 2002-07-27 by Walter Harms
 .\" 	(walter.harms@informatik.uni-oldenburg.de)
-.TH SIN 3  2009-02-04 "" "Linux Programmer's Manual"
+.\"
+.TH SIN 3  2010-09-11 "" "Linux Programmer's Manual"
 .SH NAME
 sin, sinf, sinl \- sine function
 .SH SYNOPSIS
@@ -86,23 +87,29 @@ 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.
 .PP
 These functions do not set
 .IR errno .
-.\" FIXME . Is it intentional that these functions do not set errno?
-.\" Bug raised: http://sources.redhat.com/bugzilla/show_bug.cgi?id=6781
 .SH "CONFORMING TO"
 C99, POSIX.1-2001.
 The variant returning
 .I double
 also conforms to
 SVr4, 4.3BSD, C89.
+.SH BUGS
+Before version 2.10, the glibc implementation did not set
+.\" http://sources.redhat.com/bugzilla/show_bug.cgi?id=6781
+.I errno
+to
+.B EDOM
+when a domain error occurred.
 .SH "SEE ALSO"
 .BR acos (3),
 .BR asin (3),