significand.3:ATTRIBUTES: Note functions that are thread-safe

The marking matches glibc marking.
markings of functions in glibc are:
- significand: MT-Safe
- significandf: MT-Safe
- significandl: MT-Safe

Signed-off-by: Ma Shimiao <mashimiao.fnst@cn.fujitsu.com>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>

diff --git a/man3/significand.3 b/man3/significand.3
index ae7ab03cb67f94fee0c821b72d06722503719d1d..2798ec6fc5a6cc1df3435611746e56a4d3f550e8 100644 (file)
--- a/man3/significand.3
+++ b/man3/significand.3
@@ -46,6 +46,23 @@ scalb(x, (double) \-ilogb(x))
 .PP
 This function exists mainly for use in certain standardized tests
 for IEEE 754 conformance.
+.SH ATTRIBUTES
+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 significand (),
+.br
+.BR significandf (),
+.br
+.BR significandl ()
+T}     Thread safety   MT-Safe
+.TE
+
 .SH CONFORMING TO
 These functions are nonstandard; the
 .I double