--- Libc/Libc-583/gen/FreeBSD/signbit.3.patch
+++ /dev/null
@@ -1,23 +0,0 @@
---- _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 .