--- /dev/null
+++ Libc/Libc-583/gen/FreeBSD/signbit.3.patch
@@ -0,0 +1,23 @@
+--- _SB/Libc/gen/FreeBSD/signbit.3	2003-11-12 00:44:46.000000000 -0800
++++ _SB/Libc/gen/FreeBSD/signbit.3.edit	2006-06-28 16:55:51.000000000 -0700
+@@ -40,8 +40,9 @@
+ The
+ .Fn signbit
+ macro takes an argument of
+-.Fa x
+-and returns non-zero if the value of its sign is negative, otherwise 0.
++.Fa x .
++It returns non-zero if the value of the argument's sign is negative,
++otherwise 0.
+ .Sh SEE ALSO
+ .Xr fpclassify 3 ,
+ .Xr math 3
+@@ -50,8 +51,3 @@
+ .Fn signbit
+ macro conforms to
+ .St -isoC-99 .
+-.Sh HISTORY
+-The
+-.Fn signbit
+-macro was added in
+-.Fx 5.1 .