Signed-off-by: Peng Haitao <penght@cn.fujitsu.com>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
.SH ERRORS
No errors occur.
.SH ATTRIBUTES
-.SS Multithreading (see pthreads(7))
-The
+For an explanation of the terms used in this section, see
+.BR attributes (7).
+.TS
+allbox;
+lb lb lb
+l l l.
+Interface Attribute Value
+T{
.BR signbit ()
-macro is thread-safe.
+T} Thread safety MT-Safe
+.TE
.SH CONFORMING TO
C99, POSIX.1-2001.
This function is defined in IEC 559 (and the appendix with